GSRSRT

Ok here it gos one last time i have the OBX headers and as you all know my CEL is on so i finally got the De-Foulers drilled so the O2 sensor can fit now i want to know which O2 Needs the De-Foulers ???

GSRSRT

Can anyone help

BigClexus

iTrader: (2)

I have no experience with this exact car, but I would ges the one after the cat. The first one detects the oxygen pre cat and the 2nd one detects oxygen after the cat has (should be) doing its business. The point of the defouler is to trick the oxygen sensor into believing that "cleaned" exhaust is hitting it instead of "catless" exhaust. That is my only idea on that.

GSRSRT

ok thanks i will try this tomorrow and ill let u kno what happens if it works then the thread can be closed , I hope it works

Alexus_300

iTrader: (4)

I'm not sure what you meant by De-foulers, but I'm assuming you mean an O2 simulator right? If so, it can be wired in many different ways ranging from directly to the main engine wiring harness by the ECU or in my case, I didn't want to tamper with the main engine wiring harness and tap into the O2 sensor on the second bank on the main exhaust manifold and then running a heater line down the the third O2 sensor found on the y-section of your exhaust system. Hope this helps.

GSRSRT

i will have some pics up and yes u are right but im going a diffrent way because idk how to wire the simulator

systemover

iTrader: (1)

De-Foulers will only work for so long then carbon build up will of course start building up in the De-Foulers once again setting off your check engine light the only way is to trick the o2s in to thinking its getting a good signal back to the computer with resistor and capacitor and yes its the post cat o2s you have to trick .. pm me and i will send you the link for simple DIY and parts can be bought a radio shack..

BigClexus

iTrader: (2)

No matter what, I would suggest having a fouler or non functional o2 with a wire coming off of it in case you ever need to go in for a visual inspection, or if you get pulled over (which can happen when you have an aftermarket exhaust).