Is there gonna be a difference between a 3' catback or a 2.5' catback? I was thinking about gettng the mac catback with bbk longtube headers and either an o/r h or an x pipe.

 

The difference between the 2.5 and the 3 inch exhaust depends on the horsepower that you are making. If you are running around 350 horses, you may get a really small improvement with the 3 inchers. As far as your off roads go, I would get the X pipe. They do actually give a small increase in your available horsepower. Your car is going to be a cop magnet with the decibel level though. You may have to cut out speeding .


7arpad7