Hi all,

I have a 2003 Grand Prix GTP which I've only had for about 10 months. A week ago I removed the stock air box to put in a K&N cone shaped air filter with a pipe, which required me to reposition the pcm. 2 days ago I had the 3.4" pulley mod put in at one of my local auto shops. Everything ran great, but tonight I started up the car and all I can smell is gas, the 2 rear exhausts were blowing out alot of white exhaust smoke, I checked for gas leaks but there was absolutely no leaks anywhere! The check engine symbol comes on and stays on when the car starts.

Any help or trouble shooting tips would be greatly appreciated, thank you in advance! BTW, the car runs fine, no smell of gas anymore, and the white smoke from the exhaust seems to have gone back to normal but the check engine light is still on?

take the car to a good mechanic/dealership to find out what codes were tripped. Then you can get an idea what is going on.