Motorboatin' SOB, Headlight Cleaning Guru
curiousity has got a hold of me. i understand that too big a pipe size will cause a loss in torque. but what about keeping the correct pipe size, and then having the pipe expanded to be welded to a muffler that has a larger diameter inlet and outlet (example: single 2.5" pipe expanded right before a 3" in/out muffler, then right after the muffler, reduce the pipe size back to 2.5"). would this have the same effect as opposed to running all 3" piping?