This is probably a simple thing to fix, but last week I put on a new exhaust (Flowmaster 80 series) and within 30 miles I noticed the car started jumping/jerking a little bit. I haven't been able to go back to the shop that put it on yet due to work, but last night my Service Engine Soon light came on. My gauges appear normal, and engine sounds normal . What do I need to do?

 

01 Z28? Have the code read and post it in the Comp Diagnostics & Prog section. Even if the light goes back off it should still be stored in history. Places like Autozone will do it free.

 

Check the o2's mabey? post it in the GT section for better answers.