Aight I have my header install...

[Hektik]

Oh I am using the anti-fouler for an O2 sim (oops wrong wording)

no what im talking bout is a little different. the anti-fouler works really good if u have the o2 plugs on ur exhaust, the sim is made for cars that have straight piping exhaust with no o2 bungs so they trick the ecu into thinking that there is an o2 there and that it is sending out a certain voltage..

[~The_Duke~]

no what im talking bout is a little different. the anti-fouler works really good if u have the o2 plugs on ur exhaust, the sim is made for cars that have straight piping exhaust with no o2 bungs so they trick the ecu into thinking that there is an o2 there and that it is sending out a certain voltage..

interesting...

I am not sure how it works, but I would assume that it would be fairly easy to create some sort of chip that would connect up to the normal O2 sensor things that would spam a good reading over and over again...

[EmminoDaGreat]

nonfoulers arent always reliable sometimes they work sometimes they dont, i installed a header in a Se-r (hopefully what your talking about) and it deleted the cat, mil light came on but went away on its own after a while... O2 simulator.com for the safe bet

[Big J]

nonfoulers arent always reliable sometimes they work sometimes they dont, i installed a header in a Se-r (hopefully what your talking about) and it deleted the cat, mil light came on but went away on its own after a while... O2 simulator.com for the safe bet

If the light won't stay off with 1 anti-fouler, add a 2nd one. If you use a long anti-fouler to start with and make the hole a close fit around the sensor probe it'll work better.


To turn the light off, go into diagnostic mode with the pedal, let it cycle, then hold the pedal down for at least 10 seconds (just do 20-30 secs to be sure), then switch the ignition off. When you restart the car the light should be gone. The benefit to doing it this way is the fuel trims and ignition trims aren't reset, but after any mod it's good to reset the ECU and let it relearn fuel trims, because the air flow and whatnot is going to be slightly diffrent.

Doing an idle relearn is almost the same as going into diagnostic mode, but that's next weeks "Your Spec V" lesson.

[~The_Duke~]

So then what does unhooking the battery do then? lol

[Big J]

it resets more than just the light.

[~The_Duke~]

Yes it does, your radio presets, your clock, you trip odo...

The anti-fouler trick worked like a charm

BTW Big J I saw that the check I gave for the header cleared

[green91]

All the anti -fouler does is space the o2 so far back the air near the o2 is somewhat stagnant rather than having a sweeping a/f ratio reading that would indicate a failed cat.