Header & Pipe/Muffler vs. Stock exhaust on a 4 stroke??
What is the advantage of a Header & Pipe/Muffler over a stock exhaust?? I know the 2 cycles benefit with more power and less noise, but do you really gain anything (perfmorance wise) using theses on a 4 cycle. I see the pattern guys using them, and assume it is probably more for the noise factor. Does anyone have any input or hard facts on this?? Just trying to justify the extra cost of the setup.Please let me know.