do you have a down pipe?

 

Yes cp-e

 

that's probably what's doing it. catted or no? there are threads on how to eliminate that code but putting the o2 sensor in a spark plug anti-fouler.

 

I don't reccomend using the defouler method, hasn't been working well for me at all.
Ever since putting mine in I've been running super rich and throw codes about 2x a month for low/no activity o2. I can't recall the codes at the moment but I was doing better having just the "catless" code turned off with the AP... Tried this defouler because I wanted to delete my egr but my state only allows one parameter in a "not ready" state. These other 2 codes keep popping up ever since the defouler..just waiting for some lift time so I don't have to lay in the snow to yank it out.

 

I got emissions test-how eliminate tempor....

 

Bova - this something that happens with a catted or just an uncatted?

 

mainly uncatted, since it doesn't detect there is a cat. well my car was all one piece, I had the cp-e catted downpipe and the only CEL i would trigger sometimes is P0421 which is O2 warm up slow or something like that. would usually happen if it was really cold out and i got on the highway without the engine being all the way warmed up.