Those with Topmount Turbo's and ROM Tune with MAF, Please Help!

[SixSpeedSleuth]

I have searched religioulsy locally, so I'm going to expand my search. I'm running a TS 3071R Topmounted with an Enthalpy Rom tune. So, basically I'm still running a MAF. I'm sick to death of Maf turbulence, the car idling like shit, and the car cutting off if I don't manually "catch" the revs. I know this is Mafs turbulence, but I can't lengthen my intake pipe anymore unless I have a custom one made (I can't find ANYBODY locally to do this and I've searched). So, can everybody show me the picks of YOUR Intake Pipe setup with a topmount and Mafs? Or, if somebody knows a shop or can build me a pipe that will fit in my bay with the appropriate length/bends I will gladly pay somebody. Here is a pic for reference followed with my current setup.
http://i76.photobucket.com/albums/j15/StopTheExcuses/IntakePipe.jpg
Now, my setup at the moment.
http://i76.photobucket.com/albums/j15/StopTheExcuses/AfterGreddyStrutBar019-1.jpg

[babowc]

have you considered blow-through?

[2bad240]

i have my pipe going down.

http://i217.photobucket.com/albums/cc150/2bad240/100_1156.jpg

[rps13drift]

I did blow through!
http://i8.photobucket.com/albums/a39/jadelynn04/Picture225-1.jpg

[Josh K.]

get a map-ecu. I'll sell you my old version for cheap.

[SixSpeedSleuth]

With "Blow Through" do you mean routing the breather from the Catch can into the intake pipe after the Maf? Will that eliminate my problems?

Also, the poster that put his pipe "down". Did that elimanate the turbulence??

I'm just sick of the horrible idle and such. But, is does run fantastic under full throttle.

[bardabe]

With "Blow Through" do you mean routing the breather from the Catch can into the intake pipe after the Maf? Will that eliminate my problems?

Also, the poster that put his pipe "down". Did that elimanate the turbulence??

I'm just sick of the horrible idle and such. But, is does run fantastic under full throttle.

blow through means you put the maf on the cold pipe after the turbo. before the thottle body, after the intercooler

[SixSpeedSleuth]

blow through means you put the maf on the cold pipe after the turbo. before the thottle body, after the intercooler

Hmmm. Interesting. So, the Maf would function normally and this would eliminate all of the symptoms I described? Also, I could just bolt the Filter right onto the turbo with no Intake Pipe if I did blow through right?

[bardabe]

Hmmm. Interesting. So, the Maf would function normally and this would eliminate all of the symptoms I described? Also, I could just bolt the Filter right onto the turbo with no Intake Pipe if I did blow through right?

exactly, also if you put the BOV before the MAF (hot pipe) you won't have any stalling or running rich betwen shifts issues.

[johngriff]

an SAFC will fix this with the decel setting.

[SixSpeedSleuth]

an SAFC will fix this with the decel setting.

Will this fix the idle as well? I can't get it it to idle less than 1800 or so rpms.

[bardabe]

Will this fix the idle as well? I can't get it it to idle less than 1800 or so rpms.

he was talking about the running rich betwen shifts and stalling when getting off the freeway

[johngriff]

Probably not, that sounds like you tps or timing, or AICV or TUNE is off.

I just know for a fact that one of the little things the SAFC does right is Decel AFM Signal trick, where you lift and the SAFC sends a flat voltage to the ecu for the MAF signal, fixes the Open atmosphere BOV dip and and turbulent maf air.

Unfortunately the SAFC doesn't make for a good tuning tool.

[bardabe]

Probably not, that sounds like you tps or timing, or AICV or TUNE is off.

I just know for a fact that one of the little things the SAFC does right is Decel AFM Signal trick, where you lift and the SAFC sends a flat voltage to the ecu for the MAF signal, fixes the Open atmosphere BOV dip and and turbulent maf air.

Unfortunately the SAFC doesn't make for a good tuning tool.

actually i really think its the MAF problem my buddy had the same problem. (Vinhisbored) we extended his intake pipe to 18" and walah! everything was A Ok.

[SixSpeedSleuth]

Probably not, that sounds like you tps or timing, or AICV or TUNE is off.

I just know for a fact that one of the little things the SAFC does right is Decel AFM Signal trick, where you lift and the SAFC sends a flat voltage to the ecu for the MAF signal, fixes the Open atmosphere BOV dip and and turbulent maf air.

Unfortunately the SAFC doesn't make for a good tuning tool.

I think Bardabe is right. I did have an extra bend in my intake pipe, but it was not a smooth transition to the turbo, and I was losing power, however, it would idle right *most* of the time and would not cut off between shifts, ect, ect.

I've checked TPS voltage, my base timing is 15* and my tune is Enthalpy, and I DOUBT his tune is off. I've had 4 tunes from him with all spot on AFR and such. I have not checked the IACV, but it does not seem like a problem related to that.

So, from what I'm reading, a blow through setup would be the easiest way to rid all of these problems? Or, get a custom intake Pipe?

[SixSpeedSleuth]

actually i really think its the MAF problem my buddy had the same problem. (Vinhisbored) we extended his intake pipe to 18" and walah! everything was A Ok.

Do you have a picture of this setup? I've looked the engine bay over, I just don't see anywhere to extend this to unless I have a custom Intake Pipe made with several bends. I've already purchased the Aluminum pipe, I just cant find ANYBODY willing to custom make one for me.

[2bad240]

yea i had my maf to close and it was doing the samething you are talking about, my car would foul a set of plugs in less than 5 minutes, then i extended the pipe and it ran fine.

[2bad240]

my pipe came from vibrant, it was like $26.

[SixSpeedSleuth]

my pipe came from vibrant, it was like $26.
Picture or link? This is with a Z32 Maf and topmount right?

[turtl631]

To avoid this on a turbo KA setup, we ran the filter in the driver side front fenderwell area with the MAF shortly after it and a longer pipe going to the turbo. Seemed to work pretty well. BUT, then you have all the issues associated with a CAI, namely sucking up water if you go through puddles, etc. Could be hard to route depending on your IC setup also.

[johngriff]

flatter filter (like the hks... or ebay knockoff anyone?), and longer pipe, push it up against the fender well.

[SixSpeedSleuth]

flatter filter (like the hks... or ebay knockoff anyone?), and longer pipe, push it up against the fender well.
Thanks for the suggestion, but that's the step I'm at now. I had the JWT Pop Charger, but then bought an Power Enterprise Filter because of it's compact nature and I have it tucked as deep and as far into against the fender well as I could get it.

[SixSpeedSleuth]

Anybody else have pictures of their setup?

[dkingkong]

you're supposed to have at least 12" of piping from the MAF to the compressor wheel, right?

why not just route it down.
I've seen some people route the filter infront of the motor.. not a great idea!

[turtl631]

True, I've seen setups with the intake on the passenger side. You get a really long straight section of pipe that way, but you have to worry about clearing cold side IC pipes, clutch fan (if you still have it), plus possible heating of the charge air (doubtful). Actually, might not be a bad idea if you have room.

[DUBCITY]

you guys that run MAFS on the gt3071 TS should order it with the 3" inlet instead of the 4". that 4"-3" reducer cant be helping the turbulence inside the intake.

[smelly240]

http://i132.photobucket.com/albums/q19/smelly240/DSCN1242.jpg

its downstairs where u cant see it unless ur out front layin on the ground.

the extra width opening is for the ported shroud - the compressor wheels inlet is still little...

not driven in or around water... - just so u guys know.

[SixSpeedSleuth]

Smelly240, thanks for the picture. I'm going to try and figure out something soon. Is there any way you can snap a picture of the actual Mafs and Filter location?? Thanks!

[turtl631]

Good point on the 4" opening- I wonder if that significantly affects turbulence within the MAF when using a sharp 3"-4" transition coupler. From what I've read about the ported shroud housings, I'm not even so sure I'd want one, but that's besides the point if you already have it on there. I'd say that somehow relocating the filter and MAF to inside your front fenderwell is the way to go. Also try to keep the BOV recirc hose and/or catch can vacuum source far from the MAF is possible.

[Pepperoni]

SixSpeedSleuth, you have a PM. might be able to help fab one up for you

[DUBCITY]

i dont think gt3071s have the ported shroud housing, almost positive those only come on the gt3076, the 71 just has either 4 or 3 inch mount for the rubber coupler, so people using MAFs have no use for the 4", the turbo inlet is the same size, all youre going to get is more turbulence by going inlet to 4" directly to 3", why not just keep it 3" if youre using a 3" MAF?

[heychris]

Anyone have some more info on the MAF on the Cold pipe. This makes a lot of sense as the MAF would be sensing the denser cooler air after the IC...Experiences?
Thanks;
CH

[smelly240]

ill try and get a camera phone pic today of my maf - my mom has the camera and i wont have time to stop at her house today. you know how people turn into "picture takers" when they get a couple of grandkids ;)

the pics are all of 3076r - ^^he's right - the 71R only come wiht either the standard cover or the "s" cover -like steve shadows'-

i used to run blowthrough - YOU MUST TUNE FOR IT THO - AND IT IS TOUCHIER THAN WITH A DRAWTHROUGH. I stopped because i dont have room in the IC piping to have it anymore. Plus It was too touchy - and i take my shit apart every day. Any minor adjustment to even the IC pipes and it changed a LOT.

[smelly240]

here - kinda old but u can see where it goes...

http://i132.photobucket.com/albums/q19/smelly240/DSC01934sm.jpg

[SixSpeedSleuth]

here - kinda old but u can see where it goes...

http://i132.photobucket.com/albums/q19/smelly240/DSC01934sm.jpg
Yes, I can. Thanks a lot. Did you have similar symptoms to what I'm having before you added this long pipe?

[SixSpeedSleuth]

Okay, I took the car to the local F body shop where I happenend to dyno at. (Good group of guys.) I took them the pipe, told them the problem and this is what they came up with. All in all, I'm happy with it! I have yet to polish it, because I might get it powdercoated instead. Notice the shield and the bracket they fabbed for me as well.
http://i76.photobucket.com/albums/j15/StopTheExcuses/NewIntake016.jpg
http://i76.photobucket.com/albums/j15/StopTheExcuses/NewIntake015.jpg

[smelly240]

i didnt have any problems really - thats just where i intended on having it all along. I used to get problems a long time ago - because of the compressor surge and a short intake pipe - car would get weird if at high rpm i'd push the clutch in and coast (almost stall) - that was without a bov tho. i run a bov again - not really sure why... i liked it without it.

does the car drive good with that long intake pipe? im sure with the fans on it disrupts airflow and thats what that shield is there to prevent...

I had to ziptied a flap on my bumper to stop wind from disrupting my idle when a gust hits the front of the car :p