Not sure if this is the right place for this, but figured I gotta start somewhere. I have an '02 WRX that is pretty much stock with the exception of an SPT intake and Cobb AP. Everything had been running fine for a while until a few months ago when I started throwing CEL's 300, 301, 302, 303, 304. As time progressed it increased to occuring every day. I got the spark plugs replaced, and it's now down to every couple days. Can anyone provide any suggestions as to what might be going on??

 

quick question.. which cobb map have you been running on that setup?

 

Stage 1 map, even when I clear the CEL and it is put back into stock mode, same result...