Just put on a bbk o/r h-pipe tuesday afternoon. My car has been running like sh*t ever since. At an idle it is between 600-900 rmp, and sometimes it stalls out. Also when I go to get on it, it bogs and backfires, but eventually it is fine and it just idles gay. I tore off my CAI and made sure it wasnt that last night, the only thing I can think of is my O2 sensors. I was wondering if anyone could help me out. Thanks alot.

 

try resetting the battery first and see what happens

 

did you mess with the EGR at all?

sounds like a mixture problem to me, but just
replacing the H-pipe shouldn't mess with that.

removing the cats shouldnt affect how the car
idles or runs other than lowering exhaust backpressure.

strange

 

I swap mine on and off every year,for air care,I have no probs..I don't think there should be?

 

I tried the battery. It didnt work, and I didnt touch anything else. Im taking it to the local shop tomorrow for them to run the scan on it. It will tell me why its throwing the check engine, HOPEFULLY. Lol

 

Don't the o2 sensors plug in to the H pipe? maybe during the swap you busted one up by accident. shrug

 

did you hook up your smog pump line?

 

No smog is plugged.

 

Vaccum leak..........or EGR my guess or the 02 is fubared

 

Yea just bought an o2 today. It sounds like it is backfiring at the right o2 near the header. So tomorrow im gonna replace it and if that doesnt fix it im going to go buy the other one.