i know that there are alot of imitaiton performance chips out on the market, but does anybody know where to get a chip that is actually a big performance gain.

 

Get a performance PCM. Try Howell automotive or Modern performance.

 

Mopar or AFX. And it's not necessarily a BIG performance gain. The fuel and spark tables are altered to improve performance, but make assumptions about what you've done to improve airflow. No "chip" is going to add 20 HP.

Best of luck!