New Garrett GTX2867r

[boostfreak27]

So it is time to replace the turbo on my Sr. as the seals are going out and leaking oil. The gt2871r was my original and simple choice. After hearing about Garrets new expanded line of their gtx turbos I decided to stretch my budget and see how these perform on the sr. So I ordered the Gtx 2867r and am setting it up for an external wastegate. Turbo came in yesterday, and i still have a few loose ends that i need to finish before getting the car on a dyno for a tune. I haven’t seen anyone run one of these on an Sr yet so I’m excited to see how it does. Just thought id give everyone a heads up , and hopefully we will have some dyno graphs to check out soon!
http://i1062.photobucket.com/albums/t494/jonj27/GTX2.jpg

[brndck]

please give details, dyno graphs, etc,
before and after?
these are still single scroll, no? pix of exhaust side?

[AdrenalineS14]

Mmmmmmm I def wanna know the results! Def interested in how this turbo performs!

[Croustibat]

Very interested too. A friend of mine is going to fit it on its CA, and i might as well next time i blow a turbo.

[Seraphim38]

Yup I am curious as well, though I have a 2871R .64 with less than a thousand miles on it that I will be updating with the T25-EWG-44 .72 housing, which means I won't be buying the OP's discussed turbo any time soon...

[didderson]

Keep us in the know man! :)

[boostfreak27]

Yes, the turbo is still single scroll. I never had the car on a dyno before, but im sure there are plentyof base line dynos you can compare to.
Engine mods are:
CP pistons
H- beam rods
Comtech hg
Arp head studs and main bolts
Bc valve spring and retainers
C/S ras
Tomei 260 cams
Megan exhaust mani
Front mount
Nismo 740 cc inj
Greddy ProfecII boost controller
Aem Fic

Looking foreward to getting this thing done. Ill post a pic of the turbine housing soon.

[!Zar!]

I must say this is indeed interesting.

[Walperstyle]

This effieiency of these turbos is amazing. Way less chance of compressor surge. I wish I would have purchased one of these, but they are expensive.

http://t0.gstatic.com/images?q=tbn:ANd9GcQfTWTG5HZtHqk9dU-1oySySGxPTx4V7n5S36YgR1fbuXgv5rR4Qxgi5O02

[inis]

Hi,
Although I dont own any of the cars on this site, or even a car with a SR engine. I've been watching this thread. I'm placing my order for the gtx2867r this thursday. I was told it has a anti-surge housing but its hard to tell in your pics. Can you verify this?

Looking forward to dyno results.

-Inis

[2stepGoesPowPow]

Hi,
Although I dont own any of the cars on this site, or even a car with a SR engine. I've been watching this thread. I'm placing my order for the gtx2867r this thursday.

Looking forward to dyno results.

-Inis

What are you getting the turbo for?

[inis]

What are you getting the turbo for?

I have a built zx2 with the zetec powerplant. Engine is fully built, coated internals, cnc'd head with a hand pnp, OS valves, arp throughout, aftermarket block, aftermarket mains, coated acl bearings, 3 stage dry sump with a peterson tank, aftermarket intake mani, crown vic tb, 2.5" ic piping, hargett clamps, full mandrel bent 304SS exhaust w/v-band clamps throughout. Megasquirt for tuning.

Just recently (a week ago) sold my gt2860rs, had a tial v-band housing laying around so I'm doing that with this turbo. I've yet to order. Pulled the engine last sat to do a few other mods to it..and found oil in the exhaust port of cylinder 3. I've yet to investigate it but I think its the valve stem seals. Not to worried about it.

[2stepGoesPowPow]

I have a built zx2

You should get a 240 :s101:

[Walperstyle]

^ford escort? Pending your fuel choice and tune, you could get 400hp+ with this turbo, and the housing makes it way better to avoid surge. If you go to Garrett's website you can see graphs of how this stacks up with the regular turbo's, as well as go through the 'turbo selection app' to figure out approx what turbo best fits your car.

You should also consider sticking with hot side no larger then .70 ar. It all depends on what your goals are, but 4 cylinder engines want smaller exhaust housings.

[inis]

^ford escort? Pending your fuel choice and tune, you could get 400hp+ with this turbo, and the housing makes it way better to avoid surge. If you go to Garrett's website you can see graphs of how this stacks up with the regular turbo's, as well as go through the 'turbo selection app' to figure out approx what turbo best fits your car.

You should also consider sticking with hot side no larger then .70 ar. It all depends on what your goals are, but 4 cylinder engines want smaller exhaust housings.

I had great luck with the .86 hotside. Someone with the same gt2860rs made 360whp on 21psi. The new gtx3076r another guy made 602whp on alittle over 30psi.

Currently I'm running 93 but will be swapping to e85 after this turbo. My goal isn't so much as overall whp but because I have a dry sump I can rev incredibly high. A gtx series should suit me fine for higher rpm's.

Escort/zx2 whatever you want to call it. :)

[Walperstyle]

I had great luck with the .86 hotside. Someone with the same gt2860rs made 360whp on 21psi. The new gtx3076r another guy made 602whp on alittle over 30psi.


What is the displacement of the engine? I have a .82 hotside on a GT35R turbo and I've calculated that not much is going to happen till way later in the RPM range. .64 makes for faster spool.

You have a dyno graph, I always like to see.

[inis]

What is the displacement of the engine? I have a .82 hotside on a GT35R turbo and I've calculated that not much is going to happen till way later in the RPM range. .64 makes for faster spool.

You have a dyno graph, I always like to see.

stock displacement is 1998, I should be a hair over that with the bore.

On the gt2860rs with .86 a/r I was hitting 1 bar around 3100rpm's. This isn't from watching gauges. This is what datalogs tell me.

The gt35r never worked real well for the zetec.

[boostfreak27]

Hi,
Although I dont own any of the cars on this site, or even a car with a SR engine. I've been watching this thread. I'm placing my order for the gtx2867r this thursday. I was told it has a anti-surge housing but its hard to tell in your pics. Can you verify this?

Looking forward to dyno results.

-Inis

Yes it is an anti surge housing. Sorry for the glare. Ill upload a few mor pics of my progress and turbo tomorrow. Thanks

[inis]

Yes it is an anti surge housing. Sorry for the glare. Ill upload a few mor pics of my progress and turbo tomorrow. Thanks

Awesome can't wait to see.

[AdamR]

What is the displacement of the engine? I have a .82 hotside on a GT35R turbo and I've calculated that not much is going to happen till way later in the RPM range. .64 makes for faster spool.

You have a dyno graph, I always like to see.

That's because AR isn't the same for different Turbo groups. A .86 AR on a 35 is much larger than a. 86 on a 28.

[boostfreak27]

Okay so time for a little update. Got the turbo mocked up. Everything fit together quite well and looks great. I'm still waiting for my wastegate to arrive, i have a little over 4" to the strut tower. The new Tial vmr wastegate is a little smaller than their previous version so hopefully everything fits! Next step is to install the wastegate and weld up a new 3" intake and dump tube at my shop.

http://i1062.photobucket.com/albums/t494/jonj27/2012-01-29_15-38-39_861.jpg
http://i1062.photobucket.com/albums/t494/jonj27/2012-01-31_17-06-46_290.jpg
http://i1062.photobucket.com/albums/t494/jonj27/2012-01-31_17-07-20_550.jpg
http://i1062.photobucket.com/albums/t494/jonj27/2012-01-31_17-15-15_893.jpg
http://i1062.photobucket.com/albums/t494/jonj27/2012-02-01_16-14-21_939.jpg

[Walperstyle]

sweetness sweet

[boostfreak27]

Sorry about that, should be good now.

[EsChassisLove]

How much was this?

I have a fresh 2871 on my SR and I am rebuilding right now. I might sell the 2871 and get this bad boy.

[Seraphim38]

Finally some pics! and not only that, pics include the housing that enables external wastegate mounting! I have been considering converting over to the T25-EWG-44 housing on my current 2871R but so little info exists from actual users.

By the way, ATP sells a v-band 90 degree bend elbow so that you can mount a standard 44mm Tial v-band at whatever angle you want. It's much more convenient than trying to fit the wastegate directly on the housing. $69

http://www.atpturbo.com/mm5/graphics/00000001/Catalog%20Images/pipe/ATP-FLS-131_450.jpg

MVR 44mm Wastegate 90 Deg Elbow, 100% 304 Stainless : atpturbo.com (http://www.atpturbo.com/mm5/merchant.mvc?Screen=PROD&Store_Code=tp&Product_Code=ATP-FLS-131&Category_Code=WGT)

[EsChassisLove]

44mm is hella overkill for that little turbo. lol

[Freddy]

oh please provide dyno charts

please

[inis]

44mm is hella overkill for that little turbo. lol

I had no issues with the gt2860rs and the tial 44v. Considering this turbo is good for nearly 40psi, I say a 44mm wastegate is fine.

[Bubba]

I am very interested to see what you do with this turbo on the SR20 since I have been looking at the GTX3071 and 3076 setups for my KA-t.

I'm not shooting for high numbers as much as I am shooting for response time.

Can't wait to see a dyno graph.

[jr_ss]

This looks promising... I'm currently building a VVL setup with a GTX3076R w/ a .82 hotside.

[Bubba]

^ Awesome avatar ^ LoL

[AdrenalineS14]

Okay so time for a little update. Got the turbo mocked up. Everything fit together quite well and looks great. I'm still waiting for my wastegate to arrive, i have a little over 4" to the strut tower. The new Tial vmr wastegate is a little smaller than their previous version so hopefully everything fits! Next step is to install the wastegate and weld up a new 3" intake and dump tube at my shop.

http://i1062.photobucket.com/albums/t494/jonj27/2012-01-29_15-38-39_861.jpg
http://i1062.photobucket.com/albums/t494/jonj27/2012-01-31_17-06-46_290.jpg
http://i1062.photobucket.com/albums/t494/jonj27/2012-01-31_17-07-20_550.jpg
http://i1062.photobucket.com/albums/t494/jonj27/2012-01-31_17-15-15_893.jpg
http://i1062.photobucket.com/albums/t494/jonj27/2012-02-01_16-14-21_939.jpg

HOT DAMN! can wait for numbers, this is a nice little setup though:drool:

[EsChassisLove]

Who did you buy this from?

[boostfreak27]

I bought the turbo from atp. It's about 1600 plus shipping. Shipping was around 40 for me. Plus 400 for the external gate. Might need some other miscellaneous stuff depending on your current set up.

[EsChassisLove]

I'm on a 2871 external set up. Only thing I would need to change is the piping I think.

Is it really good for nearly 40psi? What's the power output supposed to be do you know?

[boostfreak27]

Okay, so i got my wastegate today, took it to my shop and went to bolt it up. Regretfully it did not fit. The top of the gate hit the strut tower and still needed a good 1/2 inch to clear, not to mention the banjo bolt for the top vent. So i decided to fab up my own elbow. After a few hours of cutting and welding i had it all where i thought it would work best. Pretty bummed that everything didnt bolt up to the housing, but still happy with the end result.
http://i1062.photobucket.com/albums/t494/jonj27/IMG_4717.jpg
http://i1062.photobucket.com/albums/t494/jonj27/IMG_4740.jpg
http://i1062.photobucket.com/albums/t494/jonj27/IMG_4753.jpg
http://i1062.photobucket.com/albums/t494/jonj27/IMG_4759.jpg
http://i1062.photobucket.com/albums/t494/jonj27/IMG_4760.jpg
http://i1062.photobucket.com/albums/t494/jonj27/IMG_4764.jpg

[boostfreak27]

I'm on a 2871 external set up. Only thing I would need to change is the piping I think.

Is it really good for nearly 40psi? What's the power output supposed to be do you know?

The Compressor map shows 40+ lbs/min of air flow. Not real sure of the power out put of the turbo, but hopefully we will all see real soon.

[jr_ss]

You should've known that it wasn't going to fit in-between the motor/strut tower, however I do like your final placement. How close is it to the BMC/booster? When are you going to get tuned?

[inis]

I'm on a 2871 external set up. Only thing I would need to change is the piping I think.

Is it really good for nearly 40psi? What's the power output supposed to be do you know?

The gtx2867r will bolt in place of your current chra, you can keep the same exhaust housing/downpipe etc. The new compressor housing should be identically placed as the 71r's so your intercooler piping should bolt on in the same position. Additionally the turbo's inlet is the same 3" opening size. Unless you've opted for different housings you should be able to just swap the chra and compressor housing and go.

Compressor map shows this turbo is good for peak of 2.7 bar (39psi) but will bleed back down to 2.5bar (36psi) towards the top of the map. Depending how well your engine flows , you should be able to get a safe 30-35psi out of this turbo without overspinning it.

Additionally you can get this turbo for 1283.49 shipped from top speed. http://www.topspeedparts.com/Garrett-GTX2867-Billet-Wheel-Turbocharger-gtx28.html

[EsChassisLove]

Do they make a 5 bolt turbine housing without the external flange and just a blocked off internal?

I want this turbo so bad lol

[di-devol]

Do they make a 5 bolt turbine housing without the external flange and just a blocked off internal?

I want this turbo so bad lol

Isn't that how your 2871 is set up? If it's true that one could just switch turbine housings, you could just get the turbo with no turbine housing and swap yours on.

Garrett GTX2867R Dual Ball Bearing Turbo - less turbine housing : atpturbo.com (http://www.atpturbo.com/mm5/merchant.mvc?Screen=PROD&Store_Code=tp&Product_Code=GRT-TBO-187&Category_Code=GTX)

[EsChassisLove]

My 2871 internal is welded shut.

I don't want to switch housings I want to straight up sell the 2871 and get the gtx lol

[Black240Ct]

this is awesome.. im excited to see what kind of numbers your putting down..

i wonder if that exhaust housing is efficient or would be better flow with a wastegate on the manifold..

and i would like this a whole lot more if you had a tomei or full race style manifold

[boostfreak27]

Yeah i wish i had either of those. But i decided to focus my money on other things. I figure since im a welder i can prob weld the stainless if it cracks any way.

[slider2828]

The gtx2867r will bolt in place of your current chra, you can keep the same exhaust housing/downpipe etc. The new compressor housing should be identically placed as the 71r's so your intercooler piping should bolt on in the same position. Additionally the turbo's inlet is the same 3" opening size. Unless you've opted for different housings you should be able to just swap the chra and compressor housing and go.

Compressor map shows this turbo is good for peak of 2.7 bar (39psi) but will bleed back down to 2.5bar (36psi) towards the top of the map. Depending how well your engine flows , you should be able to get a safe 30-35psi out of this turbo without overspinning it.

Additionally you can get this turbo for 1283.49 shipped from top speed. Garrett GTX2867 Billet Wheel Turbocharger - New GTX Series Turbo Avaliable Now (http://www.topspeedparts.com/Garrett-GTX2867-Billet-Wheel-Turbocharger-gtx28.html)


Where the heck did you pull this outta your ass from? The GTX2876 will NOT bolt into a GT2871R.... The housings are not interchangeable cause the compressor wheel is different. Already checked with someone from Garrett....

[Leetfade]

Can't wait to see some actual numbers!

We have a group buy going on these on another site (will be adding it here as soon as they get back to us) as we are also very excited about this turbo. Better spool than the 2871r with the similar power output potential.

[codyace]

Interesting placement with the external gate on the pre flanged ATP housing, at least we all know now definitivly that it will not fit without some well placed fabrication. I'm curious as to how to how close it is the steering shaft.

Personally, I'm still a fan of how we have JPC put them atop the manifold (which we'll be doing a different setup with the 2 bolt flanged turbos soon) as the MVS is no where near the BMC that way, and out of the way of everything.


COol stuff though. When are your planned power pulls? My entire turbo setup is off my car, and dare I say, awaiting your results to see which way I go.

However if you're far out, I'll probably just follow through my gut and get one too...I'm hoping to have it back on the dyno by mid march if I do go through with it

[Def]

Where the heck did you pull this outta your ass from? The GTX2876 will NOT bolt into a GT2871R.... The housings are not interchangeable cause the compressor wheel is different. Already checked with someone from Garrett....

Of course the compressor hsg is different, it's a different wheel and trim. But the turbine housing and wheel IS the exact same between the turbos. Hence why the GTX2867R is sold without a turbine hsg.

Get your facts straight before acting like an arse... :trogdor:

[slider2828]

Of course the compressor hsg is different, it's a different wheel and trim. But the turbine housing and wheel IS the exact same between the turbos. Hence why the GTX2867R is sold without a turbine hsg.

Get your facts straight before acting like an arse... :trogdor:

I did misread his post, my bad... he was just talking about the exhaust housing, but doesn't the exhaust housing have a twin scroll option vs your standard gt2871R standard housing?

[EsChassisLove]

So this turbo doesn't come with the turbine housing and you have to buy it separate?

[slider2828]

So this turbo doesn't come with the turbine housing and you have to buy it separate?

Apparently not for 1200 bux....

[jr_ss]

So this turbo doesn't come with the turbine housing and you have to buy it separate?

You can purchase it with and without the turbine housing. Your old 2871R housing will work with it....

[EsChassisLove]

But then who am I going to sell a 2872 with no turbine housing to? Lol

I have to get this turbo now. I just need it. I gotta look for turbine housings with just the internal blocked off and not a waste gate connection.

[speedracer1610]

Where are you llocated in CA? What shop is doing the install?

[slider2828]

But then who am I going to sell a 2872 with no turbine housing to? Lol

I have to get this turbo now. I just need it. I gotta look for turbine housings with just the internal blocked off and not a waste gate connection.

I actually have a 2871R .86 AR housing.... It has a hairline crack on where the wastegate is... kinda weird and I can take a pic if you interested in using it.

[Nismo_sam]

Can't wait to see what kinda power this new gtx turbo puts down!

[Leetfade]

So this turbo doesn't come with the turbine housing and you have to buy it separate?

You do need to buy a housing separate. You can also use the TiAl T25/T28 v-band housing with this.

If you're primarily spool focused I'd go with the .64 A/R and .86 A/R if you want more top-end.

[EsChassisLove]

I actually have a 2871R .86 AR housing.... It has a hairline crack on where the wastegate is... kinda weird and I can take a pic if you interested in using it.

I said I don't need one with a waste hate attachment. Lol. I already have a external set up.

I would love to go v band turbine but I would have to get a new downpipe and I fancy my PBM Flex Cobra.

[boostfreak27]

Interesting placement with the external gate on the pre flanged ATP housing, at least we all know now definitivly that it will not fit without some well placed fabrication. I'm curious as to how to how close it is the steering shaft.

Personally, I'm still a fan of how we have JPC put them atop the manifold (which we'll be doing a different setup with the 2 bolt flanged turbos soon) as the MVS is no where near the BMC that way, and out of the way of everything.


COol stuff though. When are your planned power pulls? My entire turbo setup is off my car, and dare I say, awaiting your results to see which way I go.

However if you're far out, I'll probably just follow through my gut and get one too...I'm hoping to have it back on the dyno by mid march if I do go through with it

If everything goes as planned I am hoping to have it on a dyno by the end of next week. Also, are you speaking of the stock cast manifold that they are attaching the wastegate to? If so do you know the process they are using to attach? I just welded one up for an rb motor, and used a stainless tube on the top of the mani. It was my first time working with cast but it seemed to work well. I do know that cast isnt the easiest to attach a disssimilar metal to, and if not done with the right material can can lead to cracks. I used 99ni rod to weld it up. Just looking for more info on working with these materials, thanks.

[boostfreak27]

Where are you llocated in CA? What shop is doing the install?

Im in Chino ca. But my car is at our welding shop in Orange. Ive been doing all my own work so far. Its been a fun project. If any one ever needs anything hit me up.

[codyace]

If everything goes as planned I am hoping to have it on a dyno by the end of next week. Also, are you speaking of the stock cast manifold that they are attaching the wastegate to? If so do you know the process they are using to attach? I just welded one up for an rb motor, and used a stainless tube on the top of the mani. It was my first time working with cast but it seemed to work well. I do know that cast isnt the easiest to attach a disssimilar metal to, and if not done with the right material can can lead to cracks. I used 99ni rod to weld it up. Just looking for more info on working with these materials, thanks.

I personally do not know the rod or settings Jay uses with that stuff, I end up helping afterhours with installations and mock up stuff. He's the welder, and while I should know more (as it's in my personality) it's usually so hectic that I don't have time to ask the questions as we're getting cars in and out, or setting up equipment)

I can ask him though, and send you a PM.



Also, anxiously awaiting your dyno work. Did you previously dyno the car with a 2871?

[Kingtal0n]

Compressor map

http://www.atpturbo.com/root/releases/images/release110111/GTX2867R_816366-1_comp.jpg

http://www.atpturbo.com/root/releases/images/release110111/GTX2867R_816366-1_comp.jpg

"New GTX2863R dual ball bearing turbo with ultra high flow compressor wheel featuring Garrett 11-Blade technology. Turbine Housing is sold separately and is the same as one used on GT2871R using 53.86mm 76 trim turbine wheel "

They are calling it a 2863 on the 2867 page, which makes me think fail cut and paste job. Also, here, "http://www.atpturbo.com/root/releases/release110101-1.html" it says "GTX2876R 55 Trim" and points to this map, "2867" which is apparently another fail identification.


the gt2876r compressor is this turbo:
http://www.atpturbo.com/root/maps/images/gt2540rcompress.gif

And if so... the old gt2876 offers slightly more power potential than the 2867 according to the map, about 10 horsepower more for what its worth. Doesnt the 2871r tap around 45lb/min?
All of these turbos appear to flow within about 30-50 horsepower of each other. But that says nothing about boost characteristics... real world results are about more than just peak power potential.
->in for a dyno :bow:

[codyace]

And if so... the old gt2876 offers slightly more power potential than the 2867 according to the map, about 10 horsepower more for what its worth. Doesnt the 2871r tap around 45lb/min?
All of these turbos appear to flow within about 30-50 horsepower of each other. But that says nothing about boost characteristics... real world results are about more than just peak power potential.
->in for a dyno :bow:


It seems though most of the math/research/questions I've asked and gone over, that this turbo will produce more power at the same boost, but at the same time also offer a higher boost ability than the current 2871r.

As it stands, I would go as far as to say that on a pump gas car, that 425ish whp is achievable at 22ish psi of boost on our engines (or an efficient 2.0) at the maximum with the current 2871r platform, before it starts entering the land of simply blowing hot air with quickly diminishing efficiency.

The 2867 however seems to change that, as I think it would support 450ish at 25-26 psi, while still being efficient and not becoming a air torch.

With that all considered the 2867 also has a smaller/better deisnged wheel, which 'on paper' points to quicker spool, but more importantly faster off throttle response (which is more important to me being a track guy). It seems that it will match the 28RS in that department, which is awesome, as there is ZERO doubt from my own experience that the 28RS rips up into boost much quicker than the 2871r, despite the 'over rpm' graphs being similar.


Now the 2863 is more of a 'hot rodded' 28RS, I think guys should see 375 on that turbo, however it does seem to run out of some oomph in terms of airflow.

[inis]

Where the heck did you pull this outta your ass from? The GTX2876 will NOT bolt into a GT2871R.... The housings are not interchangeable cause the compressor wheel is different. Already checked with someone from Garrett....

way to introduce yourself.

:fart:

[Nismo_sam]

Patiently waiting for update....

Ok not really, I really can't wait to see what this thing can do!

[huffandpuff00]

DO you think there would be enough room to fit a MVS, if the 44mm end was cut from the turbine housing and a 38mm flange was added. maybe even moving the flange closer to the housing! You stated that there was a little over 4" to the strut tower and the MVS(38) is 3.7" if i remember right. then the only other thing would be the top banjo fitting.
Maybe little hammer massaging to the tower could give a little room.

I really just don't like how clustered the 90 looks, if it could come off the housing like it was intended it would look cleaner!

[codyace]

DO you think there would be enough room to fit a MVS, if the 44mm end was cut from the turbine housing and a 38mm flange was added. maybe even moving the flange closer to the housing! You stated that there was a little over 4" to the strut tower and the MVS(38) is 3.7" if i remember right. then the only other thing would be the top banjo fitting.
Maybe little hammer massaging to the tower could give a little room.

I really just don't like how clustered the 90 looks, if it could come off the housing like it was intended it would look cleaner!

It will still be a major PITA and need to get clocked or something. I wouldn't use a 2 bolt hard flange there either, due to constraints and fab ability of a dump pipe.

[Seraphim38]

There's a couple of cars around here that have had that housing installed, but have had 90 degree elbows mounted on the v-band and some other wastegate mounted on the end of the 90, then custom fabbed dump tubes. I rode in one built S15 with this configuration and it was impressive, which drove me to go the same route.

My car will be done in the next few days and I will be posting pictures of my EWG housing installation, since there are very few posted online.

[boostfreak27]

Sorry for the lack of an update. My car is now at G-Dimension waiting to get tunned. So hopefully tomorrow I can give a update with power numbers!!!!

[Boosted_gli]

i have been watching this page and i don't even own any of the cars on this sight. I have a jetta 1.8t and the shop its at is in the process of installing one of these turbos. Hope to see decent numbers!

[codyace]

i have been watching this page and i don't even own any of the cars on this sight. I have a jetta 1.8t and the shop its at is in the process of installing one of these turbos. Hope to see decent numbers!

Just remember the 1.8t is going to obviously require more boost and be slightly laggier than the SR 2.0, but it's a decent reference. I know 28RS 1.8t cars are really fun, so the 2867 should be good!

[Boosted_gli]

i had a GT3071r on before and blew the turbo. With the 3071r i saw 28psi around 4300rpm.. With some water/meth and good tuning i think some decent numbers will come from my car as well.

[boostfreak27]

So I'm having an idle issue with my car. If I set the power fc to around 68% for the injectors the car idles fine. But when I run them at 50%, as they should be run, the car dies out. They are 740s so I'm sure they are supposed to be run at 50%. Not sure whats going on but hopefully i can figure it out soon.

[slider2828]

So I'm having an idle issue with my car. If I set the power fc to around 68% for the injectors the car idles fine. But when I run them at 50%, as they should be run, the car dies out. They are 740s so I'm sure they are supposed to be run at 50%. Not sure whats going on but hopefully i can figure it out soon.

Injector lag time?

[LuckyX2]

Could also be your fuel pump going. Do you have a fuel pressure gauge?

Also, I've tuned Haltech but I'm not too familiar with power FC's so when you say 50%/68% what exactly is that in reference to?

And thanks for starting this thread. I'm very excited to see what this turbo can do.

[hybrid_eg]

get that ish dynoed, i'm pretty sure it will turn up some good numbers.. here is a GTX3582 i'm throwing on the RB.. :)) cant wait to hear this bitch rip..
http://img.photobucket.com/albums/v251/hybrid_eg/ec632a10.jpg

[boostfreak27]

Could also be your fuel pump going. Do you have a fuel pressure gauge?

Also, I've tuned Haltech but I'm not too familiar with power FC's so when you say 50%/68% what exactly is that in reference to?

And thanks for starting this thread. I'm very excited to see what this turbo can do.

No i do not have a fuel pressure gauge on it. The %numbers are the INJ Corretion settings on the power f/c . Thenumber is found by dividing the stock size inj by the new inj size. I believe the inj latency correction is set to -0.04.

[LuckyX2]

Ah so 370/740 = .5, makes sense.

Can you adjust that number with rpm? Something that you could set it at 68% for idle rpm and 50% at redline with it being linear in between?

I still think it might be the pump if it's not just a power fc issue. You do have an upgraded pump of some sort, right? And is it relatively new?

Also, as was said, it could just be different latency. Try setting the injector correction to 50% as expected and then adjusting the latency until you get a good idle and see how it runs then.

Here are some times for you to give you an idea of a normal range:
Power FC Injector settings - Get your car drivable to get it to your tuner - Hardtuned.net (http://www.nissansilvia.com/forums/index.php?showtopic=300015)

Also, is your battery/alternator good? I ask because injector latency changes with voltage.

[Croustibat]

injector latency should be around 800-900µs with these injectors, and is around 350-400 with stock ones. If it dies near idle it surely is that. I dont understand powerFC latency setting but i guess it could help.

[cotbu]

I received this turbo last week, I had 2 weeks to test it and return it. I haven't even removed my turbo yet! I'll call and ask for a couple more weeks, but i'm gonna repackage it for return. I was all hyped then it just slipped my mind. Is there anyone with a 4cyl running this turbo with dynograph and data, also coming from a gt2871r making the average power 370-410hp and 350-380tq Trying to be all scientific and shit!

[LuckyX2]

I received this turbo last week, I had 2 weeks to test it and return it. I haven't even removed my turbo yet! I'll call and ask for a couple more weeks, but i'm gonna repackage it for return. I was all hyped then it just slipped my mind. Is there anyone with a 4cyl running this turbo with dynograph and data, also coming from a gt2871r making the average power 370-410hp and 350-380tq Trying to be all scientific and shit!

I think boostfreak27 here is the closest we are to having a gt2871 to gtx2867 comparison although I'm not sure if he has a dyno from when he had his gt2871.
Any chance of you dynoing yours?

And people make 350-380tq on a gt2871? I thought it was more around 330-340tq. I'm mainly going off of codyace's which did 333tq.

[cotbu]

I think boostfreak27 here is the closest we are to having a gt2871 to gtx2867 comparison although I'm not sure if he has a dyno from when he had his gt2871.
Any chance of you dynoing yours?

And people make 350-380tq on a gt2871? I thought it was more around 330-340tq. I'm mainly going off of codyace's which did 333tq.

You actually made me look at my graph again, lol 357tq(peak)
I really don't want to get into my power vs that guys. I'm just interested in the data, and whether it'll be wise to upgrade from a certain turbo or bypass it all together. Kinda like the 2540r I hate that turbo!

[LuckyX2]

Sweet number there man, that gives me a higher goal to shoot for when I finally get around to tuning my gt2871. I have the model with the bolt on intake rather than the 3" opening tho. If I'm not mistaken, that one has a little less power, right?

And yeah, I'm excited to get some hard numbers on this thing too. I may be looking at trading up if it puts on a solid showing.

boostfreak27: Still having idle issues after adjusting latency?

[cotbu]

Sweet number there man, that gives me a higher goal to shoot for when I finally get around to tuning my gt2871. I have the model with the bolt on intake rather than the 3" opening tho. If I'm not mistaken, that one has a little less power, right?
That's why i'm trying to gather data. The gt2871r has so many flavors and i've only tried 3. The 1st. Was a.48 trim weak sauce. The 2nd was a .56 trim /w 3in intake. Great choice. And 3.my bastardize version. Actually i think obee might have had one of the earlier versions, and they kinda sucked.


Sent from my Highly Tuned Vibrant!!!

[LuckyX2]

what trims did they make the bolt on one in and how would I go about determining which mine is?

[cotbu]

I think it came standard on the older .48, but it's an option for them all. We're talking about the compressor housing, right?

1. Read your tag.
2. Measure your wheels
3. Dyno? Maybe...;)

Sent from my Highly Tuned Vibrant!!!

[LuckyX2]

Yeah, compressor housing is what I'm talking about. I wasn't aware that they made the bolt on version for all trims, good to know.
I'll have to check the tag when I'm back home.

EDIT: I'm only seeing the bolt on one in 52 trim on Garrett's site

[boostfreak27]

Haven't had time to check lag time on injectors yet. Hopefully tomorrow. My daily broke today so had to fix that haha. Thanks for everyone's input.

[LuckyX2]

The suspense is killing me here! Oh well, sorry to hear about your daily and thanks for the update.

[Conrad 2NR]

Any updates anywhere on the net?

[LuckyX2]

I haven't seen anyone online preparing to dyno except boostfreak27 here... I'm not just talking sr20's either, I mean, this is the ONLY one I've found being tested on any engine. The closest I've gotten is gtx3071 to gt3071 dynos and then extrapolating to how a gtx2867 and gt2871 would compare.

On a side note, have any of you guys seen this here (http://www.atpturbo.com/mm5/merchant.mvc?Screen=PROD&Store_Code=tp&Product_Code=GRT-TBO-201&Category_Code=GTX)?

ATP is offering a gt28xx upgrade for to a gtx2867 for only 300 bucks! :eek3:
Used gt2871's go for what, $800-900? So let's say I sold my gt2871 to buy a gtx2867 new with exhaust housing which costs around $1400 for group buys, $1600 for individuals so that would run me anywhere from $500-800 to upgrade vs $300 to have ATP modify it?

Depending on what they actually do to make it into a gtx2867, this could be a great value. I would not mind paying $300 bucks to have what theoretically should be more responsive and run an extra 2-4psi just as efficiently as my gt2871. Is anyone familiar with ATP's upgrade? Would I really be winding up with exactly a gtx2867 or is it more like an approximation? I think I might be calling them soon...

[codyace]

That 300 dollar upgrade is only in reference to a new order that traditionally comes with a GT vs a GTX. It's not a trade in deal. You do save 100 bucks or so in the end. so not bad.


With that said, I'd be dynoing this setup right now if it wasn't for ATP buying up all of the initial stuff and whoring it out to their customers/shops...and my supplier not having them yet.

[LuckyX2]

Ah, I see it now, "Upgrade Charge, on the same order placed".

Damn, I thought it was a trade in and I was about to jump right on that...

Can't wait to see your work with this turbo once you get one btw.
Hopefully you'll set the bar high for this like you did for gt2871's.

[Conrad 2NR]

Would the stock mani still be his choice of mani for a GTX2867 though, that's what I'm wondering or would we see interest in the development of an aftermarket T2 twinscroll with external gate.

Would love to see if the GTX2867 has boost creep issues like the 2871R.


Aaaargh, and I was contemplating GT2871R vs saving much longer and springing for a T3 GT3071R.

[codyace]

Would the stock mani still be his choice of mani for a GTX2867 though, that's what I'm wondering or would we see interest in the development of an aftermarket T2 twinscroll with external gate.

Would love to see if the GTX2867 has boost creep issues like the 2871R.


Aaaargh, and I was contemplating GT2871R vs saving much longer and springing for a T3 GT3071R.

I still think stock will be the manifold of choice as it uses the same turbine housing and a similar wheel. In the case of these little turbos, heat retention is king, and what makes them light so fast. Tubular manifolds won't increase response at all especially on a non divided housing.

In regard to to creep issues, I still think those issues will be there, as (again) you're using the same turbine housing with the setup.

Truthfully, this turbo is shaping up to be the new turbo of choice for those wanting to make 425-450 whp in their 240's at the limits of pump gas.

[Kingtal0n]

I still think stock will be the manifold of choice as it uses the same turbine housing and a similar wheel. In the case of these little turbos, heat retention is king, and what makes them light so fast. Tubular manifolds won't increase response at all especially on a non divided housing.

Truthfully, this turbo is shaping up to be the new turbo of choice for those wanting to make 425-450 whp in their 240's at the limits of pump gas.

My father's car is a GT2876 84 On a full-race bottom mount T-25 flange
its dressed with pistons rods cams and a D-jetro.
He is happy with it at 13psi the lowest boost setting (probably around 300 horsepower) but as we all know that turbo can do much more. I am interested now in turning it up (twist the knob on a dyno) and finding out where the compressor taps. Something else to compare with? I am also curious about the creep, or lack thereof.
Its just hard to get him to turn up the boost. "but why? its already faster than anything I've found...."

[codyace]

My father's car is a GT2876 84 On a full-race bottom mount T-25 flange
its dressed with pistons rods cams and a D-jetro.
He is happy with it at 13psi the lowest boost setting (probably around 300 horsepower) but as we all know that turbo can do much more. I am interested now in turning it up (twist the knob on a dyno) and finding out where the compressor taps. Something else to compare with? I am also curious about the creep, or lack thereof.
Its just hard to get him to turn up the boost. "but why? its already faster than anything I've found...."

I don't have much 2876 experience, but I can easily see 18-20 psi being well within pump gas limits.

In the grand scheme, it will all creep to a degree...that quarter sized hole, and a simple diaphram as are reliable as Lindsay Lohan not drinking for the evening.

As long as the fuel is there, I'd say put boost controller on her, and make him shit his pants :D

[Def]

All my GT turbos on a stock manifold have all BLED PRESSURE DOWN towards redline. None of them creeped up in pressure towards redline. I've been constantly fighting boost drop off at high RPM, to the point that I'm going with an external gate to get more boost at higher RPM as the turbine inlet pressure climbs.

My poor little GT2560R was running a MBC, and it probably completely closed off the boost source to the WG but was still dropping off boost. Going from 18 psi down to 15.5 psi at redline. It still made 300 rwhp for a pretty broad range (due to the boost dropping off), so the little wheel must have been getting close to choking and spinning it's little arse off.

[LuckyX2]

I'm with def on this one. That's basically what happened to me with my s15 turbo but it bled down even worse to 14psi. My gt2871 is a lot better but still, definitely no creep.
The inability for the s15 turbo to hold more than 14psi for me was pretty much what made me upgrade to a gt2871.

[Seraphim38]

The external wastegate T25-EWG-44 .73AR housing is a great fix for this, except on my build I found that the Tial MV-R was about an 1/8th of an inch too long to clear the strut tower/wheel well. My mechanic fabbed a 90 degree elbow (like ATP sells) and it worked out well, but it's a very very tight fit. Not the best pics (I should take more)

PICs:

http://i113.photobucket.com/albums/n233/seraphim38/240sx/DSC_4363w.jpg
http://i113.photobucket.com/albums/n233/seraphim38/240sx/DSC_4403w.jpg

More pics here at the end of the GT2871R thread:
http://zilvia.net/f/tech-talk/124925-gt2871-users-sr-motor-27.html

[LuckyX2]

Any updates boostfreak? I'm curious if you got the injectors straightened out.

[boostfreak27]

The injector latency is still off, but i was able to get the car running and idling smooth. It actually was an intake problem. I had to lengthen the tube and after that the car was running great! So I believe ill be hitting the dyno tomorrow for my tune!!

[LuckyX2]

Hmm, never would have guessed it was an intake problem... Well, glad you got it fixed and I can't wait to see the dyno results :bigok:

[boostfreak27]

Yeah took forever! Changed the iacv, put all new grounds on the car, checked ecu pinouts, checked injector continuity, even took the power fc to apexi and had it tested, tried a different maf. And after all that, it turned out to be the intake. Im glad it was a simple fix. So i made a "cold air" for it.

[Loganpsd]

Dyno yet? The suspense is killing me

[di-devol]

^This

msglngth

[LuckyX2]

Any updates yet?

[ka-turbo]

wats the updates on this...the suspense is killing me as well...bought to buy it but wanna know if its worth it!!! vs the gt2871r

[Karcas]

wats the updates on this...the suspense is killing me as well...bought to buy it but wanna know if its worth it!!! vs the gt2871r

BUMP!!!

I too am about to buy a GTX2867. I've had this page open on my phone for like a week and I refresh it a few times everyday.
Hurry up and post results!
I'm strapping this turbo to a bone stock 2010 Focus :)

[inis]

BUMP!!!

I too am about to buy a GTX2867. I've had this page open on my phone for like a week and I refresh it a few times everyday.
Hurry up and post results!
I'm strapping this turbo to a bone stock 2010 Focus :)

I'm waiting as well, mine is going on a zx2 with the zetec. Is the 2010 a duratec? 20 or 23?

[Karcas]

I'm waiting as well, mine is going on a zx2 with the zetec. Is the 2010 a duratec? 20 or 23?

All the 2gen are 20Dtec

[Mr.GT30]

I have this turbo in my car and made 364HP on RRE dyno, here is my MOd, stock bottom end, 260 in/ex tomei cams. valve spring, cosworth head gasket, 750 cc tomei injector, 255 walbro fuelpump,Stock intake manifold, CX racing front mount, PFC d-jetro, TUNE BY [email protected] RRE

[inis]

I have this turbo in my car and made 364HP on RRE dyno, here is my MOd, stock bottom end, 260 in/ex tomei cams. valve spring, cosworth head gasket, 750 cc tomei injector, 255 walbro fuelpump,Stock intake manifold, CX racing front mount, PFC d-jetro, TUNE BY [email protected] RRE


what psi were you at?

[slider2828]

and what RPM did full boost kick in? Dynograph would better explain ....

[the555car]

Which exhaust manifold? Which turbo housing and A/R? Extrude honed either, like CodyAce's setup?

cheers
-Evan

[LuckyX2]

Not to be mean, but 364hp? A gt2871 could do that no problem.

I fully appreciate you posting your results but can we get results from someone who pushed it a bit? In the meantime some info like psi and/or a dyno sheet would be great.

And where's boostfreak???

[goslow]

really wanting to see results from.

[Mr.GT30]

what psi were you at?
18psi, full boost about 300 RPM sooner then GT2871, what EX a/r ? = 0.64
as far dyno graph is in ROAD RACE Engineering Dyno computer. when can i post it? not any time soon just because Im super busy during this time around. or you can stop by RRE and they will be happy to show you.

[cotbu]

18psi, full boost about 300 RPM sooner then GT2871, what EX a/r ? = 0.64
as far dyno graph is in ROAD RACE Engineering Dyno computer. when can i post it? not any time soon just because Im super busy during this time around. or you can stop by RRE and they will be happy to show you.

If I or anyone was to take you at your word? It would mean that this turbo is not worth the upgrade from a gt2871r.64 56trim. Or your motor hasn't been tuned very well, etc... We need more data, we need better data. 300rpm sooner seems more like someone's read the brochure talk to me.

[huffandpuff00]

I searching Garrett's website and catalog for that damn special turbine housing so that I could get PSI (local shop) to order it direct from Garrett. Still never found the part #, but what I did find is a great price on the housing at a place in Kirkland, Washington called wideopentuning.com (http://wideopentuning.com/index.php?main_page=product_info&products_id=4109:57be41fd0616d2fc8bd0c4b400018289) . This is the lowest I have seen the housing anywhere, only $265 + $20 shipping to me(Oregon)...

They also sell everything ATP but for cheaper if anyone needs flanges or whatnot!

[LuckyX2]

So I guess I won't be seeing how this turbo runs any time soon?

:(

[Croustibat]

I will get some infos about one this week end. On a CA18DET.

[codyace]

Seems like much of the GTX stuff got preshipped by ATP, and the rest of the suppliers are still awaiting them to come in.

[jr_ss]

I have a GTX3076R going on a VVL motor.... I bought it from topspeedmotorsports back in Nov. They stock a limited amount of them or dropship from Garrett

[Loganpsd]

I also have a gtx3076r will b on a full-race manifold soon, I will post up some results as soon as I have some

[ka-turbo]

i bought this turbo and it seems that garret will only ship it and its kinda of back order, i however received my exhaust housing of .64 wich is wat i orderd....buut the box it came in says .72...wtf...soo im also wanting to know if this will push more boost sooner and all around better than the gt2871r

UPDATES!

[codyace]

After emailing with JWT, it seems that some of the initial GTX turbos had a machining issue, hence why they are on delay as well. I guess some of the compressor housings weren't right for the wheels, so I'm glad they noticed that now, not later.


In regard to the .72 housing, what does the turbine housing have stamped into it on the inlet? I'd disregard the box and check the housing

For Example:
http://www.codyace.com/albums/album188/P1010169.sized.jpg

[ka-turbo]

i do not have any stamping like that on the exhaust housing...i bought the upgraded externally gated exhaust housing from ATP through Endurancemotorsports when they were doing there sale, soo!?!?!?!?....i looked everywhere on the exhaust housing for it and i cannot find it

[LuckyX2]

The gated housing is a .72/.73AR so I'm not sure why you were expecting .64.

You can find that out in this thread:
http://zilvia.net/f/tech-talk/432611-new-garrett-gtx2867r-4.html#post4553333

[huffandpuff00]

still have to test fit but this is what route I am going
http://1.bp.blogspot.com/-q6o7NSs5v7A/T35E_Sfrw2I/AAAAAAAABG4/J0DQSRaUXWI/s1600/photo%2B3-761363.JPG

http://1.bp.blogspot.com/-AwkxkNTcNOw/T35E1s0yutI/AAAAAAAABFw/PJhu-joqiec/s1600/photo%2B2-722488.JPG

[di-devol]

How much clarance will there be with that setup?

[huffandpuff00]

I'm not sure yet, but the mvs is 3.7" apposed to the mvr being 4.1". I machined the mvs flange down 1/8". And ground the housing flange down flush.

I'm taking the housing to psi tomorrow to be welded and test fit, I'll put fitment pics up in the next week if possible.

[huffandpuff00]

here is the best reference to how much clearance there is now.
http://1.bp.blogspot.com/-d6FhGoQHOuk/T36o0LM4h3I/AAAAAAAABJI/aa537cMNCFY/s1600/photo%2B1-715813.JPG

http://3.bp.blogspot.com/-JyWkhTDqpbk/T36o0iXkWmI/AAAAAAAABJU/ZEdhKDrTT3Q/s1600/photo%2B2-718288.JPG

^This WG stands 4.854'" tall and is about 6" total from the turbo mounting plate.
The MVR WG is 4.171" tall and would be about 5.317" away from the turbo plate.

My MVS is 3.772" tall and sits just under 4.250" away from the plate.

http://2.bp.blogspot.com/-BxF1yjlRJR0/T36ooYWM9RI/AAAAAAAABI8/lIGQdpEZ3oo/s1600/photo%2B4-769447.JPG

http://1.bp.blogspot.com/-xIwfftIK-ws/T36onsg6rbI/AAAAAAAABIk/rWbThvZf-Fw/s1600/photo%2B2-766350.JPG

[di-devol]

It looks like you'll make it, looks good man! I'll be at PSI on Tuesday at 4:30 for dyno run if you're around.

[huffandpuff00]

Yeah I hope it clears. I'll be at work at that time, but I'm excited to see your dyno results!

[codyace]

My turbo should be here Thursday or Friday, and go figure I'm going to be a musy mofugga Friday and Saturday. Hope to have it on Sunday, weld up the dump on Monday and then dyno by end of week.

GTX2867, .64 housing :D

[the555car]

Are you going to extrude hone the turbine housing? Or see how it compares, then do it?

cheers
-Evan

[LuckyX2]

Finally, someone is gonna come through with a dyno!
Glad it was codyace too, so we'll have some reliable comparisons to his go-to 2871 setup.
I wish I was back home in Bethlehem so I could bring my 240 by and see the dyno first hand...

Thanks codyace :)

[codyace]

Are you going to extrude hone the turbine housing? Or see how it compares, then do it?

cheers
-Evan

I'll be reusing my same Extrude Honed turbine housing as it already has the wastegate flapper welded shut. Same housing as my 2871 :D

Finally, someone is gonna come through with a dyno!
Glad it was codyace too, so we'll have some reliable comparisons to his go-to 2871 setup.
I wish I was back home in Bethlehem so I could bring my 240 by and see the dyno first hand...

Thanks codyace :)

Yea I'm hoping all goes as well with this all. It's just going to be a timing thing as I've got a ton of other things going on.

IMO I'm stoked for this, as it's a make it or break it kinda test. Same dyno, similar conditions, car is essentially the same too (only thing I changed were the coilpacks, the rest is exactly the same).

[the555car]

Right! Completely forgot about the housing interchangeability and that the GTX doesn't come with one. Looking forward to your results.

[Seraphim38]

hffandpuff...FYI I couldn't get that housing to clear my strut tower and had to run a 90 degree elbow like this (offered by ATP for $69, and you have to buy an additional v-band clamp for $45):

http://www.atpturbo.com/mm5/graphics/00000001/Catalog%20Images/pipe/ATP-FLS-131_450.jpg

link: MVR 44mm Wastegate 90 Deg Elbow, 100% 304 Stainless : atpturbo.com (http://www.atpturbo.com/mm5/merchant.mvc?Screen=PROD&Store_Code=tp&Product_Code=ATP-FLS-131&Category_Code=WGT)

And, I had a custom dump tube routed (to the atmosphere). It's loud as @#$% and is tought to get used to. I asked my builder to route it into my downpipe so that it isn't so loud and he was resistant to it but will probably do it eventually. It just attracts too much attention when on boost (on the street).

[di-devol]

You are running a mvs gate as well and it hit?
Open dump wastegate is one of the best things ever.

[e1_griego]

I got mine :)

http://img.photobucket.com/albums/v168/e1griego/8668d8b5.jpg

Not sure when it's going on, though. Trying to figure out a free night/weekend.

[codyace]

I can't believe how much they are charge for new V bands to fit them...that's robbery! Nice little piece though that they sell...but at 100 dollars (before shipping) for the parts, and then more for the housing, I'd have a hard time swallowing the cost over the manifold with a traditional flange.


And yes, recirculating that dump tube is a must. I can't stand the sound of an exhaust leak, even if it is controlled :D

[codyace]

What's the outlet? 2.25 or 2.5?

[e1_griego]

I thought it was 2" -- I haven't measured it, though.

[huffandpuff00]

@Seraphim38 (http://zilvia.net/f/members/seraphim38.html)
Yeah I see that both you and the OP used the MVR(44mm) ewg, but I just figured if I used the shorter MVS(38mm) one I would be able to make it fit straight off the side. PSI should have the flange welded on today and ceramic coated tomorrow, so I think I should have a picture of it all installed next week.

Also I thought you need a smaller wg for more boost. I will be running 20lbs, so isn't the 38mm better at regulating the boost?

I figured the dump pipe would be loud, but I am running PBM straight pipe exhaust anyways and the cops here in Beaverton don't get too worked up about how loud cars are!

[g_mac530]

then dyno by end of week.
GTX2867, .64 housing :D

Hey Cody, you going to strap the car down at Diehl Paving?? If you wouldn't mind I would like to stop by and see the car in action.

[codyace]

@Seraphim38 (http://zilvia.net/f/members/seraphim38.html)
Yeah I see that both you and the OP used the MVR(44mm) ewg, but I just figured if I used the shorter MVS(38mm) one I would be able to make it fit straight off the side. PSI should have the flange welded on today and ceramic coated tomorrow, so I think I should have a picture of it all installed next week.

Also I thought you need a smaller wg for more boost. I will be running 20lbs, so isn't the 38mm better at regulating the boost?

I figured the dump pipe would be loud, but I am running PBM straight pipe exhaust anyways and the cops here in Beaverton don't get too worked up about how loud cars are!

Wastegate sizing is funny. If you're running big boost you can get away with a smaller wastegate, as you're putting most energy through the turbo itself. If you're running smaller boost you would want a larger gate, as it helps vent more pressure and has more control.

In theory, a larger gate typically works better than a smaller gate on a normal street car that isn't running huge boost all the time...but in the same regard, that does not me the smaller gate won't work equally either.




Hey Cody, you going to strap the car down at Diehl Paving?? If you wouldn't mind I would like to stop by and see the car in action.

I'm really fraekin hoping to. Deihl now rents the garage to another company so I'm still working the logistics out of it all. I'll let ya know.

[inopsey]

Wastegate sizing is funny. If you're running big boost you can get away with a smaller wastegate, as you're putting most energy through the turbo itself. If you're running smaller boost you would want a larger gate, as it helps vent more pressure and has more control.

In theory, a larger gate typically works better than a smaller gate on a normal street car that isn't running huge boost all the time...but in the same regard, that does not me the smaller gate won't work equally either.






I'm really fraekin hoping to. Deihl now rents the garage to another company so I'm still working the logistics out of it all. I'll let ya know.

if you run too large of a wastegate you can drop a few psi when it opens. this is because a 38mm hole with the diaphragm open 1/8 of an inch will move much less air than a 44mm hole open the same 1/8 inch. if the wastegate diaphragm has a minimum movement of 1/8 of an inch; but will pass too much gas at that lift (38mm vs 44mm hole) to keep the boost level steady, the wastegate is too big. if the wastegate hole is too small boost will overshoot the target boost. this is where the high boost low boost small gate big gate come in.

just to add, i run a 38mm at 18 psi and still see a small drop in psi when the gate opens.

[codyace]

While not disagreeing with the gate 'venting' capability, I think some initial drop can be solved with adjustment of the boost controller too. I notice if I have it really soft it will 'loose some steam' sort to speak down low when it vents all exhaust energy, whilst when having a lot of gain built in, it prevents that from happening.

[inopsey]

the boost drop on wastegate opening is less than a quarter psi but if you are looking at a mechanical gauge you can see it drop and spike a tiny bit as the gate operates. im also running 100 gain

[codyace]

I was expecting you to say you were loosing 1-2 psi for a split second...

I'd almost say loosing a quarter of a PSI is is probably attributed to the boost controller stepper motor functioning in general, and nothing more then that.

[huffandpuff00]

flange was welded and is now out for coating...
http://2.bp.blogspot.com/-7ZXKLkEMH6A/T4d4-5e1q_I/AAAAAAAABJs/rlifcxm2Ywg/s1600/IMG_0589.JPG
http://4.bp.blogspot.com/-DbRpQIiTUB8/T4d4-R4tniI/AAAAAAAABJg/eH-8FB1RDG0/s1600/IMG_0594.JPG

[codyace]

http://a2.sphotos.ak.fbcdn.net/hphotos-ak-ash3/577472_10151502020000224_500045223_24006939_302121 038_n.jpg

[di-devol]

So good!

msglngth

[codyace]

Everythings ready to go. Gonna weld the 90* bend on the compressor housing tomorrow, tack weld the outlet stud nuts and hopefully put it all back together late tomorrow.

[cured13]

I like the idea of less visible (more OEM) setup,
wouldn't be easier and cheaper to just weld the flange on Garret exhaust housing?
http://4.bp.blogspot.com/-DbRpQIiTUB8/T4d4-R4tniI/AAAAAAAABJg/eH-8FB1RDG0/s1600/IMG_0594.JPG

[jr_ss]

Wait! Cody, did you purchase the GTX version? I must have missed that somewhere... Here's mine strapped to the RWD VVL. It's an old picture, motor is in the car now.

http://i627.photobucket.com/albums/tt352/jr_ss/Turbomockup002.jpg?t=1321060182

[Def]

http://a2.sphotos.ak.fbcdn.net/hphotos-ak-ash3/577472_10151502020000224_500045223_24006939_302121 038_n.jpg

Ugh, please bellmouth that inlet lip. Bish looks all frumpy with its fat lip sticking out there. Seriously Garrett, we're talking a few seconds extra machine time to clean up the edges of stuff.

[codyace]

Well, initially impressions are pretty good. Turbo is MUCH louder than the old one in terms of turbo noise (my inner ricer is happy about that).

So far only got on it off the gate pressure (12psi). Seems to run really well. Didn't really abuse it yet, as tonight was more of a shakedown cruise more than anything (aka: make sure nothing falls off that I put back on hah)


I'm thinking tomorrow I may crank the whick a little

[codyace]

Ugh, please bellmouth that inlet lip. Bish looks all frumpy with its fat lip sticking out there. Seriously Garrett, we're talking a few seconds extra machine time to clean up the edges of stuff.

'pointy elbows'

;) It is amazing the things that are sometimes overlooked for sure when it comes to what even I'd say is an easy machine process.

[inopsey]

Well, initially impressions are pretty good. Turbo is MUCH louder than the old one in terms of turbo noise (my inner ricer is happy about that).

So far only got on it off the gate pressure (12psi). Seems to run really well. Didn't really abuse it yet, as tonight was more of a shakedown cruise more than anything (aka: make sure nothing falls off that I put back on hah)


I'm thinking tomorrow I may crank the whick a little

did you keep the custom oem manifold with ext gate or are you using the .72 turbine housing with the 44mm gate?

[LuckyX2]

Well, initially impressions are pretty good. Turbo is MUCH louder than the old one in terms of turbo noise (my inner ricer is happy about that).

So far only got on it off the gate pressure (12psi). Seems to run really well. Didn't really abuse it yet, as tonight was more of a shakedown cruise more than anything (aka: make sure nothing falls off that I put back on hah)


I'm thinking tomorrow I may crank the whick a little

Awesome. I can't wait to see your dyno results but my wallet on the other hand is scared of what you might show me! I've been itching to get one of these...

Btw, what's your opinion of the 2863 vs the 2867. Seems like the 63 will be pretty much equivalent to the old 71 in power output (or slightly lower) but have much better response where as the 67 will beat the 71 in power while having a little better response. Do you think 400whp is achievable on a pump gas and a 63 with proper supporting mods? Off the top of my head I believe the flow rates are 43/45/47 lbs/min for the 63/71/67 respectively so it's all very close.

[huffandpuff00]

I like the idea of less visible (more OEM) setup,
wouldn't be easier and cheaper to just weld the flange on Garret exhaust housing?
http://4.bp.blogspot.com/-DbRpQIiTUB8/T4d4-R4tniI/AAAAAAAABJg/eH-8FB1RDG0/s1600/IMG_0594.JPG
Im not sure if it is wide enough. Ill get the .72 back from coating soon and look at them both to see if it is be possible.

[codyace]

did you keep the custom oem manifold with ext gate or are you using the .72 turbine housing with the 44mm gate?

Same stock manifold, same .64 exhaust side, but now with an MVS 38mm gate.

Im not sure if it is wide enough. Ill get the .72 back from coating soon and look at them both to see if it is be possible.

I don't think it would be wide enough either. The ATP housings have more meat and are cast differently in that area to accept the flange part. While it may not be impossible, I just don't know if I'd attept as that flapper wheel and area is all very close.


Awesome. I can't wait to see your dyno results but my wallet on the other hand is scared of what you might show me! I've been itching to get one of these...

Trust me when I say, I hope it works too. Trust me when I say if this doesn't work as well as I'm hoping that I'll be seeing how accurate I am with an M16 again...been almost a year since getting out, I hope I still have it ;)


Btw, what's your opinion of the 2863 vs the 2867. Seems like the 63 will be pretty much equivalent to the old 71 in power output (or slightly lower) but have much better response where as the 67 will beat the 71 in power while having a little better response. Do you think 400whp is achievable on a pump gas and a 63 with proper supporting mods? Off the top of my head I believe the flow rates are 43/45/47 lbs/min for the 63/71/67 respectively so it's all very close.

While capable of 43 lb/min, when you look at the compressor map you'll see that it is not very efficient at the top end, or with a lot of boost...so I'd rate it very similar to the old trusty 28RS...but with a little quicker response and a tad more top end. If you're looking for anything over 350ish whp I'd still say 2871 or GTX2867 as both support the top end ability, more boost, and can safely flow the air needed to make 400+. The nice thing about the GTX2867 is that it allows more headroom for boost (and power)...not that I need more but how cool would a 425-450 (again, just in theory) car be that has full spool before 4000 rpm? I'd have a hard time going V8 with such an option IMO (and I love V8's)

[LuckyX2]

Trust me when I say, I hope it works too. Trust me when I say if this doesn't work as well as I'm hoping that I'll be seeing how accurate I am with an M16 again...been almost a year since getting out, I hope I still have it ;)



While capable of 43 lb/min, when you look at the compressor map you'll see that it is not very efficient at the top end, or with a lot of boost...so I'd rate it very similar to the old trusty 28RS...but with a little quicker response and a tad more top end. If you're looking for anything over 350ish whp I'd still say 2871 or GTX2867 as both support the top end ability, more boost, and can safely flow the air needed to make 400+. The nice thing about the GTX2867 is that it allows more headroom for boost (and power)...not that I need more but how cool would a 425-450 (again, just in theory) car be that has full spool before 4000 rpm? I'd have a hard time going V8 with such an option IMO (and I love V8's)

NO, don't shoot it! Give it to me ;)

And really? Only a little more top end compared to a 28rs?
I was thinking otherwise from compressor maps I've seen like this:
http://www.atpturbo.com/root/releases/images/release110111/GTX2863R-vs-GT2860RS.jpg

Seems like there's quite a bit more up top from that crude map.

I just now found this link too:
CLICK (http://my350z.com/forum/forced-induction/552091-new-garrett-gtx2863-testing-at-r-t-tuning.html)

These guys are expecting to get close to 400whp at 23psi and already got 359whp out of 19.9psi. Boost came on almost as quick as stock and all this without a boost controller too. However they do have a compression advantage.

I'm not liking how their torque falls off though.

[cotbu]

you first need to know where you land on the map, then which way your going. You don't just move straight up!

[codyace]

N
These guys are expecting to get close to 400whp at 23psi and already got 359whp out of 19.9psi. Boost came on almost as quick as stock and all this without a boost controller too. However they do have a compression advantage.

I'm not liking how their torque falls off though.

Well, as much as I hate to be debby downer, but we made 360 at 17/18 psi on a 28RS, on a Sentra...And made similar power with 18 psi on a RWD DET. Both cars were running Rom Tunes (Sentra JWT, 240 Enthalpy)...

I know I know, dyno racing is dyno racing...but it is what it is.

Now for the rest of the answer read below:

you first need to know where you land on the map, then which way your going. You don't just move straight up!

100%. For LuckyX2, (and this is VERY generic so none of you coolguys get too worked up over this) you need to remember that the X axis determines airflow (and total HP ability) while the Y axis determines boost ability. Sure you may be able to run 20+ PSI and still be on the chart, you will not be making any more total HP.

So while the 28RS is really maxing out at the 350-360 hp range (sure you could make more, at the expense of heat), the 2863 does seem to allow 400whp at moderate boost....but again, the 2871r does the same thing (albiet at less cost). When you overlay the 63 vs 67 you'll see that the 67 obviously supports more airflow without running out of steam, as well as still having that airflow ability with more boost.

Are the differences much over the 2871r? So far I think so...the car really comes into boost nicer...so while the graph of power over RPM may not be drastic, I can assure you that the graph over time will be a lot nicer. It just stinks that it's hard to compare graphs over time on a consistant basis.

[LuckyX2]

100%. For LuckyX2, (and this is VERY generic so none of you coolguys get too worked up over this) you need to remember that the X axis determines airflow (and total HP ability) while the Y axis determines boost ability. Sure you may be able to run 20+ PSI and still be on the chart, you will not be making any more total HP.

So while the 28RS is really maxing out at the 350-360 hp range (sure you could make more, at the expense of heat), the 2863 does seem to allow 400whp at moderate boost....but again, the 2871r does the same thing (albiet at less cost). When you overlay the 63 vs 67 you'll see that the 67 obviously supports more airflow without running out of steam, as well as still having that airflow ability with more boost.

Are the differences much over the 2871r? So far I think so...the car really comes into boost nicer...so while the graph of power over RPM may not be drastic, I can assure you that the graph over time will be a lot nicer. It just stinks that it's hard to compare graphs over time on a consistant basis.

I think what you said there about the 63 being capable of 400whp if pushed is what I was getting at. It should be similar in power output to a 71 (slightly less) but with a 8mm smaller turbine wheel so obviously more responsive. I'm in no way doubting that the 67 will flow much more and am in 100% agreement with you on that; I just was wondering how far behind the 63 would be in power and how far ahead it would be in response when compared to a 67.

The way I see it is that in terms of power it goes 63<71<67 and it terms of response it would be 71<67<63. So the 67 is better all around when compared to the 71 and a great turbo but I think I'm more concerned with response and only looking for 375-400whp so the 63 may be the one for me.

I'm guessing 450whp or so for the 67 and 400whp or so for the 63 but only time will tell for sure. I'm anxious to see what you do with the 67 and what R/T tuning does with the 63. :)

[codyace]

It should be similar in power output to a 71 (slightly less) but with a 8mm smaller turbine wheel so obviously more responsive.

While I think it was a typo on your end, for everyone else just note that it is 8mm smaller compresosr wheel. With that considered though you need to remember that the 28RS was a 60mm wheel, but it was an older design. These new billet 11 blade wheels should (in all aspects) be lighter and more efficient so i'd say the 63 wheel should spool close to the 28RS (maybe even a smidge sooner), and the 67 (so far) seems to spool near the old 28RS just off the gate. I'm sure with the boost controller things will change though.

Again though, these differences are hard to measure over an RPM graph though...over time is where these really show their differences. Heck my good buddies 28RS car and mine are almost similar...but night and day difference with timeframe and response.

only looking for 375-400whp so the 63 may be the one for me.

I'd say if you're set on the GTX series and 400 whp top end, that the 63 would be the way to go too.


I'm guessing 450whp or so for the 67 and 400whp or so for the 63 but only time will tell for sure. I'm anxious to see what you do with the 67 and what R/T tuning does with the 63. :)

I hope the 67 sees 400whp, but now there is the other piece of the puzzle that I may need to address. Sure the S3's worked well with the 2871, but I'm curious as to if S4's work BETTER with the 2867. Hard to say.

The other thing i need to sit down and play with are cam gears...I've been reluctant for no other reason than lazyness.

[LuckyX2]

Oh yeah, wrong wheel... :facepalm:

Good point with the cams. These new GTX's just keep going and going up top judging by the maps. So it seems, like you're saying, that they'd benefit from the extra duration the S4's bring. I wonder what that would do for the bottom end tho.

And yeah, cam gears are a pain, especially the JWT ones like I (and I think you) have. They're superior since they'll never slip but they're sure a pain to adjust.

[codyace]

Oh yeah, wrong wheel... :facepalm:

Good point with the cams. These new GTX's just keep going and going up top judging by the maps. So it seems, like you're saying, that they'd benefit from the extra duration the S4's bring. I wonder what that would do for the bottom end tho.

It'll be a tough call either way with the cams...I mean I think both will work, it's just a matter of what really works best. The more I think about it, the more I still think the S3's are the better choice, as they help light the turbo faster.


No 20 psi tonight. I ended up working at the fab shop afterwork tonight so by the time I left there I just wanted to get home and relax...I'm anxiously awaiting cranking the power haha.

And yeah, cam gears are a pain, especially the JWT ones like I (and I think you) have. They're superior since they'll never slip but they're sure a pain to adjust.

I had them on initially, and sold them. I'm thinking about getting two sets...a slider style set for the dyno (which I'll sell) and then a fixed position one (Like the JWT or CustomSteel) for the rest of the time.

[LuckyX2]

No 20 psi tonight. I ended up working at the fab shop afterwork tonight so by the time I left there I just wanted to get home and relax...I'm anxiously awaiting cranking the power haha.


What are you gonna do about tuning this once you turn it up? Certainly your 2871 tune will be "good enough" but also there must be some more horses to unlock with a re-tune. There's also the concern that you'll be running lean with the extra air the 2867 flows.

Gonna send it to JWT after the initial dyno run and have it tweaked?

[codyace]

I'm going to log it for sure, but I don't see it needing a retune. That's the beauty of a well setup ROM based ECU...and a MAF setup :D It adjusts accordingly and works well regardless. Sure I may be able to squeak some more out, but I think it'll be just fine. I'll be the first to report back if it isn't though...If It does need a retune I'll certainly be going to a 4 bar fuel setup and increasing the dwell times on the LS packs and cranking the boost.

[LuckyX2]

I'm going to log it for sure, but I don't see it needing a retune. That's the beauty of a well setup ROM based ECU...and a MAF setup :D It adjusts accordingly and works well regardless. Sure I may be able to squeak some more out, but I think it'll be just fine. I'll be the first to report back if it isn't though...If It does need a retune I'll certainly be going to a 4 bar fuel setup and increasing the dwell times on the LS packs and cranking the boost.

Oh, nice! I wasn't aware the rom tunes adjusted like that. I knew they did closed loop idle stuff but I wasn't aware it adjusted under boost. Good to know.

What dwell time are you running now and what would you be turning it up to? I have the LS2 truck coils and I'm running 5ms dwell currently.

[codyace]

3.5 IIRC they are set at...which in theory should be more than plenty, buttttttt ;)

And yes, this is why I'm such a fan of the Rom based MAF cars...very resilent to changes, they don't run like shit when the weather drastically changes, you can change turbos, boost levels...as long as you're in the relm/range of the MAF that is. I'm currently at 4.8 (iirc) V so I'm about maxing out the Cobra MAF...I'd say a few more HP and it should be it.

[HIGHFIVEBETA]

What ROM tune are you running and how do you adjust dwell? Sorry if im not digging back enough but im at work :D

[codyace]

What ROM tune are you running and how do you adjust dwell? Sorry if im not digging back enough but im at work :D

I'm running a Jim Wolf Technology ECU. Clark adjusts the Dwell settings on the tune and then sends you a new chip.

[LuckyX2]

3.5 IIRC they are set at...which in theory should be more than plenty, buttttttt ;)

And yes, this is why I'm such a fan of the Rom based MAF cars...very resilent to changes, they don't run like shit when the weather drastically changes, you can change turbos, boost levels...as long as you're in the relm/range of the MAF that is. I'm currently at 4.8 (iirc) V so I'm about maxing out the Cobra MAF...I'd say a few more HP and it should be it.

I set mine to 5ms off of the recommendation here: Megasquirt Sequencer Coils (http://www.megamanual.com/seq/coils.htm)
Think that's too much?

And that adaptivity is nice. I have air/coolant temp corrections set on my haltech so I don't really have to worry about weather changes but still, pretty cool. It's definitely more work having a standalone and having to touch up on things all time and I'm sure JWT does a better job of tuning than me haha but I love tinkering with it so it's all good :)

[codyace]

I can say the car certainly flows more air now....

...as It's developed spark blow out above 18psi :D


So for now I'm going to sort out what that's happening, and have Clark send me a new chip with 5m/s dwell. The plugs are new, but I may gap them even tighter as a quick test to see if that eliminates the issuee. If it does we certainly know where to go.

So for now, 15 psi it is...which is plenty fun :D

[di-devol]

What's your gap right now?

[codyace]

.022 I'm gonna bring it back to .020 and .018 to see if it clears it up.

[nash-singapore]

Thanks for so much Info Codyace. Considering a gt2871 .64 VS the GTX 2867 .64.

Will def wait for more reviews and updates from you as im not in a rush :)

[ka-turbo]

idk were u got that info from, cause i also read it and theres no were, where it says they only sell it as a .72 a/r.......

i just recieved my turbo.....FINALLY as well...and i have a few question.
1. the back/exhaust turbine has the metal round flat piece behind the exhaust turbine...is it normal to have a little bit of play in that metal round flat piece?
2.did anyone else get that piece for the turbine housing to connect it to the turbo itself? or was that seperate....and how much does that cost?
3. did anyone ever fig out how i could delineate the exhaust housing on wether or not it is a 72 vs 64

[codyace]

i just recieved my turbo.....FINALLY as well...and i have a few question.
1. the back/exhaust turbine has the metal round flat piece behind the exhaust turbine...is it normal to have a little bit of play in that metal round flat piece?[/quoote]

Yes, that is the seal. Once you get the housing on that will be tight as concrete.

[QUOTE=ka-turbo;4649674]
2.did anyone else get that piece for the turbine housing to connect it to the turbo itself? or was that seperate....and how much does that cost?

In addition to the turbine housing you'll need the locking plates (3 of them) and the bolts.



3. did anyone ever fig out how i could delineate the exhaust housing on wether or not it is a 72 vs 64

The wheel is the same trim/size/type...the housings are what have different A/R .64/.86 being the traditional common Garrett housings (in T2 flange) and then the .72 ATP one.

[huffandpuff00]

3. did anyone ever fig out how i could delineate the exhaust housing on wether or not it is a 72 vs 64

The housing only comes in a .72, where did you see the .64 option?

I have that same atp t25-ewg-44 housing and it doesnt have any AR markings anywhere...

[ka-turbo]

The housing only comes in a .72, where did you see the .64 option?

I have that same atp t25-ewg-44 housing and it doesnt have any AR markings anywhere...


ok well i got the same housing then... .72 but i asked the guy for .64 and well looks like i got the .72 but oh well im sure it will still spool really good and have a better top end...


KA-T, GTX soon to be up and running lol

[ka-turbo]

and im assuming nobody got the lokcing plate with there exhaust housing...or turbo itself???....were can i get them

THNX for the help

[codyace]

and im assuming nobody got the lokcing plate with there exhaust housing...or turbo itself???....were can i get them

THNX for the help

ATP has em

http://www.atpturbo.com/mm5/merchant.mvc?Screen=PROD&Store_Code=tp&Product_Code=ATP-FST-039&Category_Code=HAC

[huffandpuff00]

Went to PSI and found my turbo had been but back together with coated turbine and manifold. I played around with the MVS and there is around a 1/2" clearance between top and strut tower. Next is rerouting some PS lines and wrapping everything in fire sleeve.
http://3.bp.blogspot.com/-vWR1H-FAGkM/T5W86OHHuWI/AAAAAAAABNc/RXrX2KRL6sQ/s1600/photo%2B2-788214.JPG

also someone asked if it would be easier to weld a MVS flange on the normal turbine housing. The atp housing gets fatter for the flange which made it easy for my flange to get welded on, but im sure a good fabricator would be able to make it happen just fine.

bubbles out for flange
http://4.bp.blogspot.com/-qKsIcK4lAn4/T35JkB-jGVI/AAAAAAAABIM/AYD25EmxQKo/s320/photo%2B5-732485.JPG

No bubble
http://2.bp.blogspot.com/--vrUCAjzD2c/T5YrKGVRcKI/AAAAAAAABOA/JzJmAJpV45g/s1600/photo-711923.JPG

[di-devol]

Looks good, glad you got enough clearance. i was there this morning, guess i missed you again.

[codyace]

The big issue I would have, is is there enough room to really get the flange there and properly venting into the turbo. Should work though.


Another thing to consider, if it's a 1/4 inch away, will it rub under accelleration?

[Def]

The engine torques away from the driver's side framerail IIRC.

[codyace]

Ahhhh that is true..i forgot about my personal dislike torque dampers as they really dont do anythingx

[slider2828]

But torque dampers are static in both directions... They helped a lot on my engine...

[MadScientist]

Will one of you fools please just go put this on a Dyno... your killing us!!

[huffandpuff00]

Ill get close up pics on Thursday of the WG mounted, but there is lots of room(1/2" or more) between strut tower. My issue now is moving my PS return line to accommodate the dump pipe.

[e1_griego]

Will one of you fools please just go put this on a Dyno... your killing us!!

Hopefully in the next 2-3 weeks -- got it installed tonight, but haven't fired the car up yet.

[codyace]

Smashed plug gap down to .019 tonight and took it out for a rip at 20 psi....holy shit does it fly....

...brought it back in and went to check plugs again and lo and behd when i pulled the one plug off it left the crimped metal part on the plug...essentially pulling it out of the new boots. FUCK.

Took some pics and sent them to magnecor...i hope they can hook me up. I think i could normally fix this but dont want to tear it apart just in tge event they want it for.warrenty.

So it definetly will need more dwell than factory to work at a normal .025ish gap...but other than that it runs great at big boost. I can say for sure now that this turbo is much more responsive than the old 1 maybe not over r p m that certainly overtime. Do not get me wrong though the dyno does not lie and will still test it. I hope i can rig it up for this sundays dynoday

[LuckyX2]

Glad to hear it's hauling ass. Shame about the troubles but whatever, that's high performance car ownership...

What dyno day are you talking about Sunday?

[jr_ss]

Cody, you could always go to a performance shop and have them make you up a quick set of spare wires. Usually anyone that stocks wires/ends/terminals has the tools necessary to build wires on hand.

[codyace]

Cody, you could always go to a performance shop and have them make you up a quick set of spare wires. Usually anyone that stocks wires/ends/terminals has the tools necessary to build wires on hand.


The thing is with these wires, is that I don't have the traditional setup, as they are a major PITA to get onto the plugs themselves, once they are in the engine. You can almsot forget about remvoing them properly.


I had Magnecore make me a set with FWD SR20 boots, and then the LSX packs on the other. Being that NO ONE offers the long shank style boosts in a DIY kit, I was forced to use them. I think I'll be able to salvage this one by getting dukes of hazzard on it, but I still have two new ones on the way (one spare now to prevent this from happening again).

[codyace]

Glad to hear it's hauling ass. Shame about the troubles but whatever, that's high performance car ownership...

What dyno day are you talking about Sunday?

Sloppy Mechanics Dyno Day

Check the Northeast States section for more info :D

[jr_ss]

The thing is with these wires, is that I don't have the traditional setup, as they are a major PITA to get onto the plugs themselves, once they are in the engine. You can almsot forget about remvoing them properly.


I had Magnecore make me a set with FWD SR20 boots, and then the LSX packs on the other. Being that NO ONE offers the long shank style boosts in a DIY kit, I was forced to use them. I think I'll be able to salvage this one by getting dukes of hazzard on it, but I still have two new ones on the way (one spare now to prevent this from happening again).

When I had the LSx conversion on my SR I used long boots made by MSD however they didn't seal around the plug hole like the factory coils. It wasn't that big of a deal to me, but some people prefer to keep them sealed. With that said I have extra connectors(both ends) and wires if you or anyone you know needs them. I now have AEM pencil coils with the VVL setup.

Either way, looking forward to seeing results. I've been wanting a fairly stock DD setup to run for response etc, not that the VVL won't be, but it's more of a track car now.

[codyace]

Yea the sealing aspect wasn't an issue to me, but man were they a real jerk to get on and off correctly/securly in my setup. I used the MSD straight boots.

my other consideration was the fact that I mounted my coils where the cruise control stuff was on the s14, as a way to keep them from the heat, while keeping the engine itself less cluttered. I was initially going to use the OEM GM plugs, but the coils had to be mounted in a way that also interfered with the hood. My other option was to mount them to the intake, and then purchase Honda MSD plugs, hack the end, and then adapt the MSD LSX coil boots...but the cost was the same as these Magnacores, so it seemed as a no brainer to go with the right end, and save myself the hacking.


I know I know, I sound like Mr Excuse, but the setup was great...well, until the crimp stayed on the plug. Agian I'm supposed to have new ones coming, I think I can push the wire through this the long shank boot, recrimp, and ten pull it back through...but I didn't want to do that until I had the yay/nay from magnacore :D


I reallly can't think of a more fun street car setup...sure a 28RS based car would be fun (even a GT28r), but lets be serious, who wouldn't want the top end haha.

[Def]

Smashed plug gap down to .019 tonight and took it out for a rip at 20 psi....holy shit does it fly....

...brought it back in and went to check plugs again and lo and behd when i pulled the one plug off it left the crimped metal part on the plug...essentially pulling it out of the new boots. FUCK.

Took some pics and sent them to magnecor...i hope they can hook me up. I think i could normally fix this but dont want to tear it apart just in tge event they want it for.warrenty.

So it definetly will need more dwell than factory to work at a normal .025ish gap...but other than that it runs great at big boost. I can say for sure now that this turbo is much more responsive than the old 1 maybe not over r p m that certainly overtime. Do not get me wrong though the dyno does not lie and will still test it. I hope i can rig it up for this sundays dynoday

You running copper BKR7E's? You should be running iridiums (BKR7EIX) - so much nicer of a plug, and they are much more efficient. Coppers take much more voltage to jump the gap when new, and then get really bad after just 500-1000 miles.

[huffandpuff00]

here is a horrible picture of the WG on, i was in a rush

http://3.bp.blogspot.com/-055JHpS2d5E/T5qEZrIY3GI/AAAAAAAABOo/xFQVjTFER_8/s1600/photo%2B3-701916.JPG

Dump

http://3.bp.blogspot.com/-6pZOFdN0nz0/T5qEZFsqmUI/AAAAAAAABOc/a_6xDdrxXo8/s1600/photo%2B2-700096.JPG

ill try to get a better clearance picture sometime

[jr_ss]

Huff- How tight is that dump to the frame rail? Only concern is it'll hit the frame under heavy load. My top mount dump was a little too close and on hard acceleration mine would hit/vibrate.

[MadScientist]

You running copper BKR7E's? You should be running iridiums (BKR7EIX) - so much nicer of a plug, and they are much more efficient. Coppers take much more voltage to jump the gap when new, and then get really bad after just 500-1000 miles.

Its an HP thing... IX come pre-gap and its very hard and risky to adjust the gap.
The evo guys run these all the time because they hold for around 3k miles then they trash them because there cheep on the wallet.

If your running a COP w/ CDI the copper will not foul so early, and does produce good burn.

[LuckyX2]

So codyace, what dyno day was it that you were talking about?

It wouldn't happen to be STM's that's this Sunday, would it?
I'll be there but I'm assuming that's not the one you're talking about since that's all the way up here in Rochester.

[jr_ss]

I'm pretty sure that's the one he was refering to a few posts back.

[LuckyX2]

Sloppy Mechanics Dyno Day

Check the Northeast States section for more info :D

Oops, I missed your reply. Guess that would be the dyno day then haha.
I wish I was home because Diehl's is like 5 minutes from me...

I'm excited to see the numbers!

[mattsil80wis]

Oops, I missed your reply. Guess that would be the dyno day then haha.
I wish I was home because Diehl's is like 5 minutes from me...

I'm excited to see the numbers!

It's not at Diehl's anymore. It's at psi speed solutions

[huffandpuff00]

Huff- How tight is that dump to the frame rail? Only concern is it'll hit the frame under heavy load. My top mount dump was a little too close and on hard acceleration mine would hit/vibrate.

I'm not really sure how much clearance it has between the steering and frame. But Ill get some clearance shots from underneath when it goes back on the lift.

[towlie]

Its an HP thing... IX come pre-gap and its very hard and risky to adjust the gap.
The evo guys run these all the time because they hold for around 3k miles then they trash them because there cheep on the wallet.

If your running a COP w/ CDI the copper will not foul so early, and does produce good burn.

When I ordered my bk7re's at a local auto parts store they were listed under "lawn and garden" haha

[e1_griego]

No dyno yet, but after a weekend of autox I love this turbo.

Comes on super smooth and starts making boost in the 2k range. When it hits wg boost (I'm running 13psi right now) it's not violent like my 2876 so it doesn't unsettle the car.

Loved the car autoxing all weekend in spots that I know would have sucked because of lag with the 2876.

[Def]

Its an HP thing... IX come pre-gap and its very hard and risky to adjust the gap.
The evo guys run these all the time because they hold for around 3k miles then they trash them because there cheep on the wallet.

If your running a COP w/ CDI the copper will not foul so early, and does produce good burn.

I ran the IX's on my SR and they lasted about 20x as long as the coppers, and I just replaced them for the hell of it. They're easy to gap if you're not a tard. Just don't hit the tip.

Yea yea, lots of turbo guy runs old '70s technology copper plugs because they don't know wtf they're doing. But iridium plugs are a huge step forward in spark intensity and longevity without resistance going up.

[codyace]

I ran the IX's on my SR and they lasted about 20x as long as the coppers, and I just replaced them for the hell of it. They're easy to gap if you're not a tard. Just don't hit the tip.

Yea yea, lots of turbo guy runs old '70s technology copper plugs because they don't know wtf they're doing. But iridium plugs are a huge step forward in spark intensity and longevity without resistance going up.

It's hard to argue against the IX plugs working, as I know they do...but in the same aspect of things you do have situations where some cars hate them. We've had a few cars run exceptionally better when going back to copper. Don't ask me why though.

[codyace]

Had our dyno day yesterday at a different dyno shop. Big boy load bearing dyno this time. We've had plenty of cars dyno at Franks and our old Dyno, and it's usually a solid 20 hp difference between them. I can say that having dynoed over 300 cars now on the old dyno, that it does take some getting used to the Mustang dyno..on the Dyno jet you can almost always just lay on the hammer and make power (it's only a little 1000 lb roller). On the Mustang Dyno you usually spin the tires on the first pull as the rollers are double the weight of the car. You also need to train yourself to 'stay in it' as the dyno builds resistance...it's odd at first as you think you're hurting the car...but it's normal. Then again he's used to setting up 2000+ hp cars on the dyno so it's different for them needing big load.

Either way the car put down 395 at 19/20 psi. Forget the torque, but will have that soon. With that said I'm VERY happy with the results, as that's (and again we've compared 30-50 cars now between the two dynos) typically a 415-420 WHP car on our old DynoJet at Deihls Paving. At 11 PSI it made 308 whp.

I'm stoked. Only thing was I had to keep cranking the boost to make 20 PSI on Franks dyno...and of course I forget to turn it down. On the way home I laid into it and it made 25 psi...let me assure you it was freaking fast.

Same setup as before, just super low plug gap. I'm hoping to get the longer dwell and opening the gap to make some more power.

Cliffs: SUPER happy with the new turbo. Boost builds sooner, comes on nicer, and without a doubt makes more power than the 2871r setup.

[LuckyX2]

Had our dyno day yesterday at a different dyno shop. Big boy load bearing dyno this time. We've had plenty of cars dyno at Franks and our old Dyno, and it's usually a solid 20 hp difference between them. I can say that having dynoed over 300 cars now on the old dyno, that it does take some getting used to the Mustang dyno..on the Dyno jet you can almost always just lay on the hammer and make power (it's only a little 1000 lb roller). On the Mustang Dyno you usually spin the tires on the first pull as the rollers are double the weight of the car. You also need to train yourself to 'stay in it' as the dyno builds resistance...it's odd at first as you think you're hurting the car...but it's normal. Then again he's used to setting up 2000+ hp cars on the dyno so it's different for them needing big load.

Either way the car put down 395 at 19/20 psi. Forget the torque, but will have that soon. With that said I'm VERY happy with the results, as that's (and again we've compared 30-50 cars now between the two dynos) typically a 415-420 WHP car on our old DynoJet at Deihls Paving. At 11 PSI it made 308 whp.

I'm stoked. Only thing was I had to keep cranking the boost to make 20 PSI on Franks dyno...and of course I forget to turn it down. On the way home I laid into it and it made 25 psi...let me assure you it was freaking fast.

Same setup as before, just super low plug gap. I'm hoping to get the longer dwell and opening the gap to make some more power.

Cliffs: SUPER happy with the new turbo. Boost builds sooner, comes on nicer, and without a doubt makes more power than the 2871r setup.

Awesome, thanks for the update. It made more power on less boost and did it more responsively :eek3: Gonna post the graph up soon?

Also, any plans to do a dyno pull at higher psi and really see what you can make with the higher pressure ratios these GTX's can flow at?

[codyace]

Awesome, thanks for the update. It made more power on less boost and did it more responsively :eek3: Gonna post the graph up soon?

Also, any plans to do a dyno pull at higher psi and really see what you can make with the higher pressure ratios these GTX's can flow at?

Maybe....just maybe :D
The bottom end should be 'ok' for the power, just want to ensure the MAF and Injectors are...both are maxed out.

I just got a new laptop so some logging is way overdue...shame it's going to be rainy the next few days.


Either way the car does make some good power, and much sooner. If I get files I'lll gladly post em

[gotta240]

Given your MAF and Injectors are maxed, do you think the smaller 2863 may be a better choice with your current set-up? IE: utilizing the higher pressures and coming closer to maxing out the turbo but with an even faster spool?

I'm debating between the two right now and was really waiting on your reply from the dyno(thanks for posting it!!!!) As someone who "only" wants 400 hp and don't want to do supporting mods for more.....do you think the smaller one would be better now? I respect your opinion/knowledge greatly so any imput you have on this would be greatly appreciated as I have basically the same supporting mods as you(except i'm running an apexi standalone) but I have no desire/need to go above 400whp.

[Black240Ct]

dyno graph!! post it up

[LuckyX2]

Given your MAF and Injectors are maxed, do you think the smaller 2863 may be a better choice with your current set-up? IE: utilizing the higher pressures and coming closer to maxing out the turbo but with an even faster spool?

I'm debating between the two right now and was really waiting on your reply from the dyno(thanks for posting it!!!!) As someone who "only" wants 400 hp and don't want to do supporting mods for more.....do you think the smaller one would be better now? I respect your opinion/knowledge greatly so any imput you have on this would be greatly appreciated as I have basically the same supporting mods as you(except i'm running an apexi standalone) but I have no desire/need to go above 400whp.

I already suggested the same thing and codyace agreed. For 350-400whp, the 2863 is more suitable. Over 400whp and you're gonna want the 2867 tho.

Think of the gtx2863 like a souped up gt2860 and the gt2860's are already doing around 350whp max.

Personally, I think the 2863 is the best autox turbo for street mod with an SR and I hope to get one down the road, money allowing, since autox is what I'll be doing more and I value the response more than the power. For people doing drag or high speed track events, they'll probably want the 2867 or larger tho. Last year's street mod champ had a KA-T with a 2871 just btw.

[cotbu]

I wanna see some Traps, at least 2. ;)

[codyace]

The thing about the 2863 that kept me from 'going that route' was the lack of top end that it supported. Sure that may spool a teensy bit sooner than the 2867, but on track I need that top end (6000-8000)power often times more than the trade off in initial response. Don't get me wrong I love instant on power, but I'm RARELY below 4000 RPM...in fact I can only think of a handful of turns across all the tracks where I'm at (Pocono South in the infield, Pocono Double Infield when you're coming back onto the back stretch, um...Pocono Double Infield coming on front stretch as any higher and it blows the tires off on the turn...very few times, and it's all to prevent wheel spin)

After driving my friend's 2871r car at the same dyno day, I am more glad then ever for switching over. Sure the 2871r spools quick, btu the GTX2867 really comes into power much sooner, much more managable power.


I wanna see some Traps, at least 2. ;)

I'll hafta get there someday. Being that I don't care for drag racing it probably won't be till the fall, after I get my track days in. But trust me, it's in the plans as I'm a physics fan too :D The car trapped 120mph (11.6 with a 1.88 60') on the last setup so I do have a reference point.

[LuckyX2]

The thing about the 2863 that kept me from 'going that route' was the lack of top end that it supported. Sure that may spool a teensy bit sooner than the 2867, but on track I need that top end (6000-8000)power often times more than the trade off in initial response. Don't get me wrong I love instant on power, but I'm RARELY below 4000 RPM...in fact I can only think of a handful of turns across all the tracks where I'm at (Pocono South in the infield, Pocono Double Infield when you're coming back onto the back stretch, um...Pocono Double Infield coming on front stretch as any higher and it blows the tires off on the turn...very few times, and it's all to prevent wheel spin.

That's why I specified autox vs track vs drag. The 2867 is better for someone like yourself for the exact reason you said. But for someone like myself who plans on autocrossing more than tracking, the response is valued more so because there are going to be a good deal of 2-4k rpm turns.

[gotta240]

Ok, looks like the 2867 will indeed be the choice for the track days then.....
I know the 2871 came in like 20 different seetups......Is the 2867 the same way or is there just one model as far as trim sizes etc.....

In other words.....I'm ordering the 2867 but want to make sure I get the correct one (IE:the one you have codyace.....yes...i'm now your damn fanboy)
thanks for all the replies and for doing much of the research/testing I'm too dumb to do.

[codyace]

There were no options when I ordered mine, other than it just being the 2876. Without a doubt (like the 2871) it's got that top end powerband that doesn't exist with the 28RS/2863...while they may still spool quicker, you can't beat the flexibility of the 2867.

[MadScientist]

now my only question is if it better than the Tomei M8280?!?

[codyace]

now my only question is if it better than the Tomei M8280?!?

hard to say....for some reason those tomei units never seem to 'make' the power they claim here in the US.

[homeslicej2]

gotta240, just keep in mind that the GTX turbos do not come with the exhaust housing. The GTX28xxx use the same housings as the old GT28 turbos so Codyace's 2871r exhaust housing (which is an 0.64 A/R iirc) fits onto the GTX2867r. When you order yours keep that in mind if you don't have an existing housing that will fit onto it.

[inopsey]

now my only question is if it better than the Tomei M8280?!?

you mean the new borg warner efr turbos? compare ball-bearing new turbine wheel technology between manufactures.

[MadScientist]

Hate to bust your bubble but the BW EFR has been having issues lately and its being revised.

Tomei is Journal, and has larger wheels.

[inopsey]

i know they had to return the original turbine housing because they were not satisfied with the quality of the housings. that put them back from being released a few years ago when they were suppose to be. that issue is sorted and now the only problem getting one is the backlog waiting for them.

btw the results ive seen from these bw turbos look like the turbo is on an entirely different sized engine when compared to a similar sized gt turbo on the same engine. ive seen the gtx tested in the gt3076 size on the same engine (sr or rb) with the gtx vs gt version and while there is a noticeable gain its nothing like the comparison dynos ive seen using the bw efr turbos compared to a similar sized gt turbo.

[codyace]

Hate to bust your bubble but the BW EFR has been having issues lately and its being revised.

Tomei is Journal, and has larger wheels.

Yea the Tomei wheels are certainly bigger in all aspects. Nice turbochargers, and their newer kits are really well priced...cant' beat that either vs the BW setup.


btw the results ive seen from these bw turbos look like the turbo is on an entirely different sized engine when compared to a similar sized gt turbo on the same engine. ive seen the gtx tested in the gt3076 size on the same engine (sr or rb) with the gtx vs gt version and while there is a noticeable gain its nothing like the comparison dynos ive seen using the bw efr turbos compared to a similar sized gt turbo.

There are a few examples out there for sure, but those EFR turbos are shrouded by some odd secrecy...and it seems that it always happens to be Full Race who has the results...nothing against a company doing testing, but it's ironic when it's the same company pushing the product that's been able to be the sole provider of dynos ya know?

[inopsey]

actually the results ive seen have been from australia not even a full race manifold used. heres a link http://www.nissansilvia.com/forums/index.php?showtopic=479236&st=90

[Freddy]

Yea the Tomei wheels are certainly bigger in all aspects. Nice turbochargers, and their newer kits are really well priced...cant' beat that either vs the BW setup.



There are a few examples out there for sure, but those EFR turbos are shrouded by some odd secrecy...and it seems that it always happens to be Full Race who has the results...nothing against a company doing testing, but it's ironic when it's the same company pushing the product that's been able to be the sole provider of dynos ya know?

There does seem to be a lot of secrecy around the efr, other than the perrin test and what full-race has released. There a few people on Here that own efr but I have yet to se a dyno chart posted. Everyone says they're good, all I want is a chart for proof and comparison.

I thought this thread would end up like the efr threads but cody save it some what still waiting for the chart.

[codyace]

Well that's the other issue...we may have an issue with the chart...and it's our own fault

When we ran the day we had it all saved under one deal, and I think they have erased each other as we continued the tests. I think my other buddy that runs the deal with is heading up there to find out tonight to make sure we didn't bogard the entire deal.

With that also said, I'm going to try and get back on the old dyno I used previously too...issue is the new owners are freakin odd, and I'm unsure they even want any of us there again (by us, being the old dyno people)...I'm trying though.

[LuckyX2]

Any luck with the dyno charts, codyace?

And I emailed R/T tuning. They said they should be finalizing the tune on their GTX2863 equipped S14 today and post up the results soon here: R/T Tuning (http://rttuning.com/)

That should give us a professional, third party comparison for 63 vs 67 vs 71

[codyace]

I'm not going to obtain any charts from the last dyno day, my suspicions were true about us overwriting them the way we had it set up


Will be cool to see RT's results.

[Kingtal0n]

Well that's the other issue...we may have an issue with the chart...and it's our own fault

When we ran the day we had it all saved under one deal, and I think they have erased each other as we continued the tests. I think my other buddy that runs the deal with is heading up there to find out tonight to make sure we didn't bogard the entire deal.

With that also said, I'm going to try and get back on the old dyno I used previously too...issue is the new owners are freakin odd, and I'm unsure they even want any of us there again (by us, being the old dyno people)...I'm trying though.

regardless we would need/want a chassis dyno report anyways. while those "other" dynos are fancy and great for tuning they do not represent the vast majority of dynometers that most of us use... and therefore, to have a numbers matching i.e. comparison contest between graphs, it should be using the same type of dyno... a typical dynojet... backed up by another car with known chassis numbers used the same day to verify accuracy if possible.

And in the future, to avoid complications with graphs and printing, as often happens while on the spot... Bring a digital camera and simply snap a picture of the screen after a run.

[LuckyX2]

I'm not going to obtain any charts from the last dyno day, my suspicions were true about us overwriting them the way we had it set up


Will be cool to see RT's results.

Ah, sorry to hear that... Any plans on dynoing again or taking it to the strip?
And whatever happened to boostfreak lol.

Oh and I realized this weekend that I never checked what trim my 2871 was so I took a look at the part number.
14411-69F00. That's right, a damn 2560, s14/s15 turbo... Turns out I got scammed back when I bought what was listed as a 2871.
For whatever reason, I never thought to look at the numbers, I guess I just trusted the person. I also thought it felt like a 2871 because it's not ball bearing like my old s15 turbo and was slower to spool.

So it's a bit late now to do anything about this but the good news is that I have even more reason to go GTX/EFR.
I'll be reading up even more than I have been already and keeping a close eye here to hopefully pull the trigger on one in the next month or two.

[TFD]

@Lucky: If Im reading it right, those guys at R/T made 360whp on a gtx2863 / .63 at wastegate pressure (7/12 psi??)?

Line is allmost N/A like strait up... looks great. Wonder what it does @ 18 psi or so.

[LuckyX2]

@Lucky: If Im reading it right, those guys at R/T made 360whp on a gtx2863 / .63 at wastegate pressure (7/12 psi??)?

Line is allmost N/A like strait up... looks great. Wonder what it does @ 18 psi or so.

Actually it was at 19.9psi compared to the stock t28 at 17.5psi.
They're not done tuning it yet though and are shooting for as close to 400whp as they can get.
Here are some more details: http://my350z.com/forum/forced-induction/552091-new-garrett-gtx2863-testing-at-r-t-tuning.html

Their finalized results should be up in a day or two.

[codyace]

regardless we would need/want a chassis dyno report anyways. while those "other" dynos are fancy and great for tuning they do not represent the vast majority of dynometers that most of us use... and therefore, to have a numbers matching i.e. comparison contest between graphs, it should be using the same type of dyno... a typical dynojet... backed up by another car with known chassis numbers used the same day to verify accuracy if possible.

And in the future, to avoid complications with graphs and printing, as often happens while on the spot... Bring a digital camera and simply snap a picture of the screen after a run.

I understand how to appease the forum masses, but in the same regard I'm running a dyno day (we had over 40 cars on the dyno) so we had to maximize our time. Frank/Matt set up the dyno to simply over run (by accident) each previous run so it was hard to say. Atop of that, the parameters were not 'spcialized' either (we were using generic figures for all the cars) so it may not be the most accurate dyno either.

So in the grand scheme of things, I know the power the car made isn't the most accurate, nor is the best way to go...the issue is, that's what I was working with, and went with. But with my information I can honestly say I know it's making more power than before.

-395 on the new dyno (which we have compared mulitple times to our old dyno) it's certainly much more power (again the differences have been proven time and time again with our stuff)
-I had encountered spark blowout that never existed before
-The car spins the tires much easier than before

I'll be at the track at the end of this month (NJMP) and then out at Ohio a few weeks after at the SE-R convention. At this point I'll then have two tracks to get real feedback from. I'm certain this new turbo is going to kick ass on track, and that's really my main concern, not so much the HP stuff that gets the forum guys hard (not directed at you KingTalon)

...
I'm still trying to get back on the previous dyno I used, but it's not that easy (new owners, lack of support etc etc). Trust me, I'd love to get on there to keep it the same.
....

[codyace]

Actually it was at 19.9psi compared to the stock t28 at 17.5psi.
They're not done tuning it yet though and are shooting for as close to 400whp as they can get.
Here are some more details: New Garrett GTX2863 testing at R/T Tuning - MY350Z.COM Forums (http://my350z.com/forum/forced-induction/552091-new-garrett-gtx2863-testing-at-r-t-tuning.html)

Their finalized results should be up in a day or two.

At least it's promising like I had expected. Thing is though, we've had 28RS Sentras make similar power and torque at less boost. I hope they can fine tune it to get it to come on sooner :D

[LuckyX2]

At least it's promising like I had expected. Thing is though, we've had 28RS Sentras make similar power and torque at less boost. I hope they can fine tune it to get it to come on sooner :D

The way I see it is that if the GTX2867 can make more power than a GT2871 with a 4mm smaller wheel then a GTX2863 should be able to make more than a GT2860 for sure with a 3mm larger wheel.

At least I'm hopeful for that haha. I really hope R/T pushes it to 25psi or so, otherwise, yeah, it's just a GT2860. These GTX's need to be taken to high pressures to shine as can be seen in all of their maps.

[codyace]

Without a doubt these puppies are going to need to run more boost to make more power, but that Prelimintary R/T Graph honestly is no better than the 28RS car we have. I'd love to post a graph but the server we used for the pics is down (yay asia/pacfici based hackers...unsure why they're messing with us other than to use it to spam others)