I am new to the list and am thinking about building a system for the 5 and then the sedan. I have tested a prototype and gained 5hp/5 ft/lbs torque and the car is an automatic. I used all stainless steel and it looks and sounds awesome. The power
gain is nice and my buddies wife loves it.

If there is enough interest I will build them. I do have a dyno sheet to prove my results. I don't have prices figured out yet
but I know I can keep it reasonable and can make it happen soon.

 

how about some pics and better specifics like pipe diameter, muffler used, and anytihng else important. post the dyno results.