Originally Posted by
blackTEG99
stupid question, im about to buy a full exhaust, and i was wondering if a full 3 inch cat back would be to big for my motor, will i have enough back pressure? or should i run 2.5... right now i have a skunk2 I/M,dc 421 2 piece header, aem full ram..help please
there wouldn't be a point to running anything more than 2.5