Quote: My last 2.5 dynomax on a 452 iron head moter duals cost me 5 tenths in the quarter a change to 3" gained me .4 and only cost .1 closed! you know not of what you speak
Once at a midus muffler 2.5 turbo muffler system that cost almost .9
I know exactly of what I speak. You seem to have missed the last part of my statement. There is no way a basic stock motor will lose 60 hp between open and 2 1/2" exhaust.
