I drive a 2002 GT. I installed BBK Long Tube Headers, BBK O/R H-pipe, and American Thunder Flowmaster Cat-Backs. Now I got this Check Engine Light that will not go off. When hard shifting my buddy says he sees black smoke puff slightly during shifting indicating it is running rich. Can this be from the exhaust and the check engine light. I was thinking I need to chip it or something. Everything else is stock including intake.

 

did you put mil elimnators on it?

 

yea you need MIL eliminators

 

yeah mil eliminators will trick the computer to thinking you have cats and it will keep your check engine from coming on.

 

My "mil eliminators" consist of detatching the battery every couple days....

 

You will need the MIL Eliminators not much only 50 bucks! As far as the smoke and everything Just ask your mechanic what it is doing and mybe change your oil.