Bruce K 2K2 WRX

I just installed DC Sports up-pipe on my 02 WRX and Invidia 3" catted bellmouth downpipe. The downpipe has a cat -- and I also used the spark plug extenders to put my 02 sensor away from the flow a bit. Started car up and got 0303 error -- my code reader said this is cylinder 3 misfire. I cleared the code -- but it comes right back. The exhaust is not leaking.

Is this error because of my recent installs? Is the cyl 3 misfire related to exhaust flow ? Or 02 errors?

Any ideas how to go about fixing that error? Spark plug? Coil pack?

How often do coils (coilpacks) go bad on WRX's ??? -- 2002 with 105K

Also -- which are the one range colder spark plug to use?

Thanks guys!

--Bruce K.

sigma pi

iTrader: (6)

i use regular plugs


how long have the plugs been in ??

do you have a BOV?

genomegixxer

hey man i don't know if you found your answer yet but i have an 02, with vishnu tuning and turbo back and have the same code all the time. i've done full diagnosis, according to factory spec, on the coils and they check out fine. my guess would be a tuning issue related to the extreme reduction in back pressure. but that's just a guess.