I had been running an aggressive spark map which, at this point i feel was causing my car to misfire and not fouled plugs, since i replaced them. I went back to a relatively safe spark map and have not had any misfire issues. But i am noticing some very strange things.
Every once in a while i get a periodic CEL being thrown, and I do mean periodic, every 13 seconds for about 2 minutes and then it stops. If I shut the car off and hook up my laptop, and then continue to drive, no spark retard, knock voltage below threshold setting. It's happened on 3 occassions, and today, i just pulled over shut my car off and turned it back on, and the CEL pattern went away... Its a hydra in my 02 WRX.
On another note, with extreme cold fading is anyone noticing the ISC settings causing the car not to idle fine?