I installed an SLP loudmouth exhaust with bullet muffler on my car tonight and after about a half hour of driving, I got an SES light. Haven't had a chance to scan it, but could it possibly be something to do with the fact that this exhaust is a LOT more free flowing? By seat of the pants feel, I dropped 2 tenths 0-60... love the sound as well. Any ideas?

 

Shouldn't cause any problems. Maybe an O2 sensor went bad or something.

 

Im willing to bet that your bank 1 sensor is messed up or on it's way out the door.

 

I had an o2 go out shortly after installing my first catback on my car, front driver's side I believe it was. Had about 96k miles on it at the time, guess it was barely hanging on and the extra flow was too much for it to keep up with.

 

Once you get it scanned report back. Cause there is only so much we do without a code.

 

I scanned it and it tripped PO1416 , bank 2 air pump. I'm thinking it was the exhaust system install that may have did it. I'll just have to see if it trips it again.