So I decided to get a used Stillen Test Pipe for my 07 G coupe. I found out after the installed that they were suppose to be for 03 to 05 coupe ONLY or 03 to 06 Sedan. I got a check engine light on today and don't know what to do. I expected that it will not pass Smog but this Check Engine Light is driving me crazy. Any way to fix this without pulling the fuse? I had assured that the O2 sensor were plug in as I did reviewed it with my mechanic before bringing the car down from the lift.

Please advice,

thank all,

 

You will definitely not pass smog with any sort of test pipes. You can try the O2 fix which involves using a spacer in each O2 bung and that might get rid of the CEL light.