Megan Racing Turbo Outlet -Elbow o2 question

[rsxyz]

Hey , I got the Megan racing turbo outlet and im not sure what o2 sensor im supposed to use with it . the stock one i guess is the skinny one and is way too small for it . the outlet looks liek it needs to use a bigger o2 sensor. I have a sr20det redtop , what o2 sensor should i use ? please help , thanks

[rsxyz]

I was told that the greddy one has the same size fitting but it comes with an adapter to be able to fit the skinny o2 sensors. please give me some info , all information is appreciated. thanks

[96twofourty]

wideband or egt?

[rsxyz]

hmm im not sure , just the regular one to make the motor work. im not trying to tune it or anything yet , jsut worried about getting the car running.

[rsxyz]

right now the stock 02 on the stock turbo outlet is small and thin , the thread hole for the o2 sensor is bigger. Ive heard that there are two different o2's the skinny type and the bigger type , does anyone know what application the bigger o2 is used for ? thanks

[sciamop]

rsxyz: After a quick inspection of my stock redtop turbo outlet, it appears that the stocker has a built-in 'adapter': the skinny 02 sensor threads into a big bolt (bung?) that threads directly into the outlet. This is the same set-up as the KA24DE.

Did you remove just the 02 sensor or the 02 sensor and the adapter?

Todd

[rsxyz]

I didnt know the stock outlet had the adapter in there because im still in the process of putting my motor into my car. The reason I was asking about it was because i ordered the Megan Racing outlet and my friend said the stock o2 was too small , but ill have a chance to look at the stock elbow today , thanks

[sr240mike]

The last time I bought an o2 sensor for the sr I got the one for a 87 - Nissan 300zx Turbo as listed on http://www.sr20det.nismo.org/srtech.htm , but it was too big for the stock pipe. It did have the same connector. That one might fit in yours.

[sciamop]

The skinny 02 sensor (redtop) is *not* a direct fit for the Megan Racing Turbo Outlet. Oddly, the fatty from the KA24DE fit right in!

MR does include a bolt that fits into the 02 sensor hole. I think their intention is that you tap it out to fit the 02 sensor.

rsxyz: What was your pal's conclusion? Do you have the size/thread pitch for the skinny 02?

sr240mike: was that 02 sensor the same size as the DEs?

Todd

[mrmephistopheles]

I was told that you can remove the bung from the stock 02 fitting and thread it into the elbow.

[sciamop]

I was told that you can remove the bung from the stock 02 fitting and thread it into the elbow.

The stock fitting is too big. Pictures to come...

[-usmd-180sx]

The stock fitting is too big. Pictures to come...

so.. i just recently purchased one of these turbo outlets from megan racing.. it does have one of those bolted caps where the o2 sensor should go.. so your telling me that i have to tap that bolt and put my (redtop) "skinny" o2 sensor into this new megan racing outlet? plz elaborate on this.. or should i go purchase an o2 sensor from a KA24DE "fatty" and use that instead? :bite:

[sciamop]

so.. i just recently purchased one of these turbo outlets from megan racing.. it does have one of those bolted caps where the o2 sensor should go.. so your telling me that i have to tap that bolt and put my (redtop) "skinny" o2 sensor into this new megan racing outlet? plz elaborate on this.. or should i go purchase an o2 sensor from a KA24DE "fatty" and use that instead? :bite:

I don't want to spread FUD: KA24DE o2 sensor only has one wire. IT WON'T WORK. I was just noting that it fits.

You'll need to tap it out. I'll post specs when I do mine.

Here's a few pics:

http://www.whistlehog.com/data/megan/stock_vs_mr_02_fitting.jpg

http://www.whistlehog.com/data/megan/stock_fitting_on_MR_outlet.jpg
Λ Visual of stock fitting on MR elbow. Sorry for the shit pictures.

http://www.whistlehog.com/data/megan/inlets.jpg
Λ Comparison of inlets. MR is much larger.

http://www.whistlehog.com/data/megan/side_by_side.jpg
Λ Side by side look. The size of the MR elbow is more evident when looked at from the o2 sensor side (I didn't get that pic b/c my camera is a POS).

[mrmephistopheles]

well shit.
that sucks. I wonder if the greddy fitting would work, and if it could be ordered seperately...

[rdoggins]

I went to the local auto parts store and picked one up to fit mine... it was a GM 3wire... $69

[mrmephistopheles]

care to share the part number? also, how are you sure it's providing the same readings as your stock 02 sensor?

[rdoggins]

i can check it to see if there is a part number on it... I had the car tuned and haven't had any problems out of it...

[JKim0901]

i bought one of those and didnt have a problem with mine, i have a s13 black top and i know the o2's are different from the red tops. so my input would be that the black top o2 fits in there without any modifications

[sciamop]

I just tapped out the supplied MR cap bolt:

13/32 Drill Bit
M12 x 1.5 tap

I haven't put the car back together yet; I'll let you know how it goes tomorrow.

Todd
90 Coupe
93 Coupe

[-usmd-180sx]

I just tapped out the supplied MR cap bolt:

13/32 Drill Bit
M12 x 1.5 tap

I haven't put the car back together yet; I'll let you know how it goes tomorrow.

Todd
90 Coupe
93 Coupe

thanks for the valuable input todd.. cuz im in need of this answer.. im plannin on going to install the MR outlet pipe.. but whats the use of i cant hook up the o2 sensor when im doing so.. lol.. and plus im traveling 50+ miles away from home to install it too = (.. so lemme know how it goes..

[Touring240]

I've been dealing with 02 sensors lately. I'm installing a new greddy 02 elbow on my red top. Here is what I have discovered:

87 300ZX 3.0L SOHC turbo 02 sensor
skinny
fits red top
bosch premium oxygen sensor # 13385
does not plug in you need to cut off the harness and solder yours on

86 200SX 1.8L turbo 02 sensor
fat type
fits black top
bosch premium oxygen sensor # 13276
plugs right in to factory harness

I'm using the 13276 because my greddy elbow is missing the adapter. I'm still having issues with the elbow though. My s15 auto turbo has 2 studs on the bottom on of which is too long and is preventing the elbow from going on :( Gonna take the dremel to it in the morning to cut the stud down.

[-usmd-180sx]

I've been dealing with 02 sensors lately. I'm installing a new greddy 02 elbow on my red top. Here is what I have discovered:

87 300ZX 3.0L SOHC turbo 02 sensor
skinny
fits red top
bosch premium oxygen sensor # 13385
does not plug in you need to cut off the harness and solder yours on

86 200SX 1.8L turbo 02 sensor
fat type
fits black top
bosch premium oxygen sensor # 13276
plugs right in to factory harness

I'm using the 13276 because my greddy elbow is missing the adapter. I'm still having issues with the elbow though. My s15 auto turbo has 2 studs on the bottom on of which is too long and is preventing the elbow from going on :( Gonna take the dremel to it in the morning to cut the stud down.

thank you.. good info man.. very good.. might have answered most of our questions.. but another 1 hehe.. when u listed the o2 sensor for each 'top' u listed a o2 sensor with similair input.. like (i.e) the 87 300ZX 3.0L SOHC turbo 02 sensor.. thats the sensor i could use in replacement right? simliar fittings?? and then what is the bosch premium oxygen sensor # 13385? an o2 sensor in replacement for the one off the 300zx if it has gone bad?? little clarification plz :tweak:

[element240]

dude!
" bosch premium oxygen sensor # 13385 " is the part and part number that you can get from an auto parts store.. and it is the one that will fit the 1987 300zx and s13 redtop, little common sense man! lol :keke:

oh and good info touring240 :bigok:

[-usmd-180sx]

dude!
" bosch premium oxygen sensor # 13385 " is the part and part number that you can get from an auto parts store.. and it is the one that will fit the 1987 300zx and s13 redtop, little common sense man! lol :keke:

oh and good info touring240 :bigok:

:mrmeph: (me) :smash: (element) :wiggle:

[sciamop]

I just finished putting the elbow back on the car. It's running great:

-- Spool starts a little earlier but the power still comes on at 3K.
-- It's hitting 12+psi on my Autogage boost gauge a bit after 3K.
-- Mods: JWT Pop charger, MR Elbow, MR downpipe, gutted stock cat (hi-flow 3" cat goes in this weekend), Apexi N1 catback

One other thing that should be noted about this product:

The skinny o2 sensor barely makes it into the main chamber of the outlet. On the stock outlet, it was fully in the chamber.

Could this be a problem? Either way, I'm going to pull the bolt out and grind it down so the o2 will be in the flow.

-----

5-second Review: Cheap high-flowing elbow. No instructions. Requires some modification for o2 sensor. Good fitment in car. Chinese knock-off of GReedy unit. No divider wall. Decent quality. Welds are a bit sloppy. Unknown durability. Unknown flow capacity/dynamics.

Price: built4race on ebay: $85 shipped. built4race is Megan Racing's ebay outlet.

3.9 stars out of 5 (good value)

Todd

[-usmd-180sx]

I just finished putting the elbow back on the car. It's running great:

-- Spool starts a little earlier but the power still comes on at 3K.
-- It's hitting 12+psi on my Autogage boost gauge a bit after 3K.
-- Mods: JWT Pop charger, MR Elbow, MR downpipe, gutted stock cat (hi-flow 3" cat goes in this weekend), Apexi N1 catback

One other thing that should be noted about this product:

The skinny o2 sensor barely makes it into the main chamber of the outlet. On the stock outlet, it was fully in the chamber.

Could this be a problem? Either way, I'm going to pull the bolt out and grind it down so the o2 will be in the flow.

-----

5-second Review: Cheap high-flowing elbow. No instructions. Requires some modification for o2 sensor. Good fitment in car. Chinese knock-off of GReedy unit. No divider wall. Decent quality. Welds are a bit sloppy. Unknown durability. Unknown flow capacity/dynamics.

Price: built4race on ebay: $85 shipped. built4race is Megan Racing's ebay outlet.

3.9 stars out of 5 (good value)



Todd
did u have to solder your o2 sensor onto the new outlet pipe(bung) as stated above from somebody elses post? cuz that is what bothers me.. i might have a problem getting my new o2 sensor installed into the MR outlet pipe.. or is it not as complicated as im thinking it to be?

[Muzzy]

lol solder your o2 sensor?!?! WTF?!? did u use that plumbers solder?? i think it will melt

[-usmd-180sx]

lol solder your o2 sensor?!?! WTF?!? did u use that plumbers solder?? i think it will melt

lol.. i was referring to when someone stated that i would need to solder the adapter or harrness of the o2 sensor to the bung on the new outlet pipe..but as u can see.. i still have a lot of confusion about installing this o2 sensor onto this new unit..

[sciamop]

lol.. i was referring to when someone stated that i would need to solder the adapter or harrness of the o2 sensor to the bung on the new outlet pipe..but as u can see.. i still have a lot of confusion about installing this o2 sensor onto this new unit..

Hey Bud, I PM'd you about this but to clarify:

-- You make a hole in the MR bolt with the 13/32 drill bit.
-- You put the M12 x 1.5 tap in the hole.
-- You screw the tap into the hole and it makes threads in the hole.
-- Screw the tap the way through the hole and unscrew it.
-- Voila. You can now screw your o2 sensor into the hole.

http://www.whistlehog.com/data/o2sensor.gif

[msaskin]

care to share the part number? also, how are you sure it's providing the same readings as your stock 02 sensor?

ALL o2 sensors work via what's called a nernst cell, and output what is called the Nernst scale. They're all the same, any o2 sensor from any car (save for ones with factory widebands) will work on any other car. Sure, you may run into other issues (1, 2, 3 wires), but so long as you splice the sensor wire in properly, it'll be fine. The other wires are for o2 sensor heaters, which increase response time (o2 sensors don't work when cold), but beyond that, the output is always the same.


In 1899, Professor Walter Nernst, working in Leipzig, Germany, developed the theory of a "concentration cell" which, much like a battery, uses a gas-tight ceramic electrolyte that becomes electrically conductive above 625-650 degrees Fahrenheit. This "Nernst cell" transfers oxygen ions from "reference air" inside the cell to the outside environment--or from the outside environment to the reference air in the cell. This flow of ions generates measurable voltage reflecting the differencet in the oxygen content between the gas outside the sensor and the reference air inside the sensor.--Chuck Ruth, Bosch Corporation


~matt

[-usmd-180sx]

ALL o2 sensors work via what's called a nernst cell, and output what is called the Nernst scale. They're all the same, any o2 sensor from any car (save for ones with factory widebands) will work on any other car. Sure, you may run into other issues (1, 2, 3 wires), but so long as you splice the sensor wire in properly, it'll be fine. The other wires are for o2 sensor heaters, which increase response time (o2 sensors don't work when cold), but beyond that, the output is always the same.



~matt

Muchos Gracias! :fruit: :fruit:

[S13E]

that is what i thought. I've been using KA24E single wire sensors on my SR, i swapped the KA bung onto the stock SR elbow. It just takes an extra few minutes to heat up without the 3 wire heated ones and the sensors cost less.

[msaskin]

Exactly. Either way, even though it takes longer to heat up the car takes a few minutes to warm up anyhow, and when the car is in warm up mode it operates closed-loop, meaning it ignores the o2 sensor anyhow :)

What does a generic 1 wire o2 cost? Like, $20?

~matt

[-usmd-180sx]

can i just buy an o2 sensor nut off a 86 200sx turbo 1.8 and just stick my skinny (stock redtop) o2 sensor into the nut i bought.. or will it not work??

[msaskin]

Read my above posts. Buy ANY o2 sensor that fits the threading/nut, splice away, you're done.

~matt

[-usmd-180sx]

does anyone know the exact size of the nut on the Megan Racing outlet.. so i can go ahead and purchase the correct open ended wrench as i pick up an o2 sensor.. thanks

[mrmephistopheles]

msaskin - awesome info. I'm MUCH more enlightened now. I was of the understanding they operated more like a MAF, showing different voltages at different instances.

[Joe_M]

My Megan Racing O2 housing came with a threaded adapter for the o2 sensor. Since it was going on my CA and it has a fatty o2 sensor, I didn't need the reducer. I might still have it somewhere.

If you still need one, let me know. It's yours if I can find it.

Joe

[msaskin]

msaskin - awesome info. I'm MUCH more enlightened now. I was of the understanding they operated more like a MAF, showing different voltages at different instances.

Well, sort of, but they're all the same :)

0-1v, fixed A/F ratio scale. Here's the chart:

http://www.plxdevices.com/M-Series-Controllers/NarrowbandOutputGraph.jpg


~matt

[mrmephistopheles]

My Megan Racing O2 housing came with a threaded adapter for the o2 sensor. Since it was going on my CA and it has a fatty o2 sensor, I didn't need the reducer. I might still have it somewhere.

If you still need one, let me know. It's yours if I can find it.

Joe

Dibs !

[-usmd-180sx]

its irrelevant to this question.. but i tried taking out my stock outlet pipe today..omg.. it was such a Bitch.. and i couldnt even finish the job.. those bolts are so fkn rusted and a bitch to get off.. i dunno how u could do it..i stopped when i couldnt budge any of those bolts ontop of the outlet pipe connecting to the exhaust turbine.. anyone have any good tips on getting pesky exhaust bolts off like a piece of cake? cuz.. seriously.. i dont wanna dish out 80 bucks to have a muffler shop do it..

can u also tell me what ur choice of tools are when u took the pipe off.. i am so far tryna to use a open ended 13 metric.. but but with know luck.. haha good lucky anyhow tryna get exhaust bolts off with an open ended wrench... no extension.. damn.. im so tired..

[mrmephistopheles]

anyone have any good tips on getting pesky exhaust bolts off like a piece of cake?

WD40.

Before you get frustrated because you think I'm giving you the Standard Form ID 10-T answer, think about this:
When I worked at Nissan, a recall was issued on certain year V6 Xterras for exhaust manifold replacement. The recall job was said to be a 10 hour job (iirc), which means it'll take the average professional mechanic 10 working hours to complete the recall. After a few months of this, the guys at my shop started presoaking the exhaust manifold bolts with WD40, warming the engine to operating temperature, and applying some more after they shut it off.
The bolts came off like melted butter, and they were able to do a 10-hour job in about 4 hours (even though they'd still get paid for 10.)

[-usmd-180sx]

lol.. very interesting story man.. ill try presoaking them and running the engine and repeating the order.. u think liquid wrench or pb blaster will work up to par as well too?

[mrmephistopheles]

dunno.
We went through cans and cans of WD40.

[msaskin]

PB blaster would work better...it's like the crazy crack-head brother of WD40 :)

~matt

[SirWarrior]

PB blaster would work better...it's like the crazy crack-head brother of WD40 :)

Yep, when he's on speed and smoked an ounce of angel-dust!!!!!!!!!
:eek:

[-usmd-180sx]

Ok. heres an update on my progress. So far i have actually installed the MR outlet pipe flawlessly. But the only problem i am facing right now is.. that the new o2 sensor that i have bought, the wires seem TOO short too reach the connector under the hood..

i purchased the Bosch #13276 200sx 1.8T o2 sensor (fatty)

well i was wondering if i can just splice the wires off the stock o2 sensor(skinny) to the (fatty) o2 sensor.

The Bosch sensor has a color diagram of (left to right) white,black,white

While the stock sensor wires are (left to right) red,black,white.. OR white,black,red.. whichever side you consider "top" of the harness..

So my question is.. which wires should i splice them to? Im guessing black is ground on both the sensors..but can anyone clarifiy on this to how i should splice the old wires to the new so i can elongate the (fatty) sensor to connect to the harness?

Sorry if i am not clear on explaing this.. I tried my best.. ill get some pictures up to show what i mean in a bit.

[msaskin]

Did the bosch sensor box (or paper with it) say which wire does what?

My suggestion is to just match the wires up. Wiring colors are [semi]standard for a reason.

~matt

[-usmd-180sx]

Did the bosch sensor box (or paper with it) say which wire does what?

My suggestion is to just match the wires up. Wiring colors are [semi]standard for a reason.

~matt

The Bosch sensor didnt come with any color diagram to tell what wires does what.. but i did upload to the pictures.. can anyone give me input?

the harness with the red wire is the "skinny" o2 sensor from the stock o2 wiring..

https://home.comcast.net/~180sxdrifter/Picture_001.jpg
https://home.comcast.net/~180sxdrifter/Picture_002.jpg

thanks

P.S. This might be a stupid question.. and you can flame me for this.. but how long can i run "safely" without an o2 sensor pluged in.. and if your answer is "not safe" plz help guide in the right direction to splicing this wires correctly for me to install.. thanks

[mrmephistopheles]

weird. I figured they were plug & play.

[-usmd-180sx]

weird. I figured they were plug & play.

I wish they were plug and play.. but the "fatty" o2 sensor wires were too short for the connectors to meet.. so i am here in this postion to splice.. and elongate the new o2 sensor i picked up

[mrmephistopheles]

so it's just the wire length that's keeping you from plugging it in, or will it not plug in at all?

oh, and as far as how safe it is to run without one... it's not terribly unsafe, your gas mileage will just really suck. A buddy of mine ran without an 02 for... i dunno 9-10 months? It was installed in the car, just not wired in. That's what he got for ratfucking his wiring and trying to eliminate EVERYTHING! In the end, he hooked it up and got better gas mileage.

[-usmd-180sx]

so it's just the wire length that's keeping you from plugging it in, or will it not plug in at all?

oh, and as far as how safe it is to run without one... it's not terribly unsafe, your gas mileage will just really suck. A buddy of mine ran without an 02 for... i dunno 9-10 months? It was installed in the car, just not wired in. That's what he got for ratfucking his wiring and trying to eliminate EVERYTHING! In the end, he hooked it up and got better gas mileage.

Yea. its just the length of the wire that is keeping me from plugging it in.. also the connector for the new o2 sensor doesnt seem to plug into the harness under the hood.. so i figured i can just use the old connector and the old wires to elongate it so i can connect it. would it work without and trouble? 1-2-3 wires spliced to 1-2-3 wires?

[msaskin]

That would work fine. Also, you can run indefinitely w/out the o2 sensor, the car will just get horrible gas mileage and probably run like hell.

~matt

[Touring240]

It was plug and play on my red top.
The bosch sensor you got is the same on I'm using. plugged right into my o2 sensor harness.
I guess my o2 wires were extended a little farther than yours.

[-usmd-180sx]

That would work fine. Also, you can run indefinitely w/out the o2 sensor, the car will just get horrible gas mileage and probably run like hell.

~matt

Yea, i figured that much.. my gas was fkn drained quicker than i expected going to school and back.


It was plug and play on my red top.
The bosch sensor you got is the same on I'm using. plugged right into my o2 sensor harness.
I guess my o2 wires were extended a little farther than yours.

Hmm.. i wish i had purchased one with extended wires.. but mine is ridiculously short.. seriiously.. and for the harness.. i dunno why mine wouldnt click into place.. it would just sit there.. but it would click into its spot..

Well.. imma try splicing the old harness and wiring to the new o2 sensor and hopefully this is another lesson to be learned.. lol.. wish i didnt have to jerry rigg the damn thing :down:

[Blitzspec200sx]

http://www.whistlehog.com/data/megan/side_by_side.jpg
Λ Side by side look. The size of the MR elbow is more evident when looked at from the o2 sensor side (I didn't get that pic b/c my camera is a POS).

Is the bottom of the megan racing of the same size as the original O2 housing.
I mean, will my standard downpipe still fit if i get the megan racing o2 housing.

[Ritz S14]

Ok. For most universal type O2 sensor Black is usually the SIGNAL wire.
As for the other two, it doesn't make a huge difference where they go. Because your heater has no polarity, they can go on either side.

The heater has a a resistor, once voltage is applied it will heat up the o2 sensor so it can fluctate and go to "close loop" faster.

[Requeim]

Dear God thank you Sciamop, you saved me :)

[UNISA JECS]

ALL o2 sensors work via what's called a nernst cell, and output what is called the Nernst scale. They're all the same, any o2 sensor from any car (save for ones with factory widebands) will work on any other car. Sure, you may run into other issues (1, 2, 3 wires), but so long as you splice the sensor wire in properly, it'll be fine. The other wires are for o2 sensor heaters, which increase response time (o2 sensors don't work when cold), but beyond that, the output is always the same.



~matt


Sorry I know this thread is old but im faced with the situation of megan racing o2 elbow with skinny o2 sensor.

Second the above statement is false to anyone that reads this ion the future:

If you really want to get down to teh nitty grider be prepaired to do some research, I dont feel like going into a whoel big spill about it so if you want just read this thread thouroughly:

http://www.sr20forum.com/240sx/124479-ecus-harnesses-differs-02-sensor-wiring-running-rich-explained.html

***note all o2 sensors are NOT created equally, this goes for non-wide band o2 also, it really boils down to what you ECU is refferenced for (Zirconia vs Titanis), DONT ever trust the ECU or harness that comes with your swap unless you actually got a complete front cut unmolested clip becasue ECU and harnesses get passsed around like dirty whores, thats word to the wise. On page 4 of the link you will find a sure fire way to tell what o2 sensor your ECU requies, hope this helps.

I'll quote myself here anyways:
To the thread that has not died yet!
I'll add some more info to this great thread since charlie2020 is no more.......
Tesing Methods to figure which o2 sensor your ECU requies:
Testing will be done at the signal wire on the ECU side of harness (its usually a white/off white to yellowish in color) here you will use paper clips or what have you to back probe the harness and attach one probe of your multi-meter (have multi-meter set to volts) to the paper clip or what have you and the other probe to ground (chassis/battery) and with the key on and engine off and multi-meter set to volts:

All below is with key on engine off:
For Zirconia refferenced ECU (ex. B13 SR, B14 SR, S13 KA even though its singal wire o2 its still relevant):
~0.32 volts DC
Zirconia o2 sensor
Middle white wire - signal
For Titania refferenced ECU (ex. RNN14 GTi-R, and certain year JDM Silvia's):
~0.025 volts DC
Titania o2 sensor
Middle black wire - signal
Also you will not be able to monitor Titania refferenced ECU's with o2 gauges or what have you since its not based off the 0-1 volt principle of the Zirconia sensor. Hope this helps


AND BY THE WAY DOES ANYONE KNOW IF MEGAN SELLS THE SKINNY O2 SENSOR ADAPATOR?

[k's_silvia2.0]

Well seems like alot of trouble for a "Bolt on"

[UNISA JECS]

I'd also like to note that swaping o2 housing when running Megan turbo manifold to the stock DET that can be used to run the skinny with the stock 17mm adapter is not an option becasue it will hit the transmission.

[ilovecoupes]

http://www.eastcoastdrift.com/teddy/kurant/sro2sensoradapter/mro2sensoradapter2_thumb.jpg (http://www.eastcoastdrift.com/teddy/kurant/sro2sensoradapter/mro2sensoradapter2_.jpg)

I got mine from enjuku racing
part number is ER-O2ADPT

[UNISA JECS]

http://www.eastcoastdrift.com/teddy/kurant/sro2sensoradapter/mro2sensoradapter2_thumb.jpg

I got mine from enjuku racing
part number is ER-O2ADPT

Those appear to be plugs rather than adpaters, anyways I called Megan and they do sell the 17mm skinny o2 adapter for $15, there is not part number for them by the way but you just gotta tell what it is you need and they'll know.

[hellion240sx]

lol 3 years later. i'm glad i didn't go with them. like k's silvia 2.0 said above me not saying its a bad piece. but seriously, if you sell the part make sure its a simple bolt on. like an intake system, for example, you don't have to chop, cut, weld, solder anything. but great info on this thread! glad you posted the remedy for this problem!

[UNISA JECS]

lol 3 years later. i'm glad i didn't go with them. like k's silvia 2.0 said above me not saying its a bad piece. but seriously, if you sell the part make sure its a simple bolt on. like an intake system, for example, you don't have to chop, cut, weld, solder anything. but great info on this thread! glad you posted the remedy for this problem!

No problem, its not even for my vehicle just taking care of a friend of a friends s13 that got some very shaddy work done to it by RBMotoring...to say the least but thats a whole other story.

[daryl337]

blacktop motors also have a fat o2 sensor bung as I recall. I just got the o2 bung fitting drilled and tapped to fit the skinny redtop o2 sensor.

[GSXRJJordan]

Yeah how did everyone miss that? Megan didn't make a shitty part - they made it so all SRs could use it. All blacktops use the fat 02 sensor.

I drilled/tapped the plug when I first did my swap so I could use my skinny 02 sensor in my Megan elbow - it still gets its little probe in the exhaust flow, and still works. Then I fried my engine bay, replaced my sensory with a blacktop (fat) one (plug and play, btw) and all is good in the world.

EDIT: The elbow WILL break if you are not using a flex pipe. Get their downpipe/flex pipe at the same time.

[UNISA JECS]

I think the megan elbow is a nice piece and made very nicely but the gauge of metal used seems to be very thin which could shorten its like especially if your not running a flex pipe.

[hellion240sx]

woohoo, glad i got a blacktop!

[UNISA JECS]

If you are running either of these two ECU's, you need to be running a skinny o2 sensor:

Both S13 and RS13
23710-50F00 MT
23710-50F10 AT

All 9101 - 9401 S13/RS13 are skinny o2 sensor/

Just added 9/24/07

If you are running either of these ECU's, you need to be running a fat o2 sensor:

RPS13
23710-50F05 M/T
23710-60F06 M/T
23710-60F07 M/T
23710-50F15 A/T
23710-60F16 A/T
23710-60F17 A/T