Quote Originally Posted by 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
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.