RE: Question on exaust design?
Good luck-- the programs I have seen are not applicable to anything but all out speed effort - then - they are still just a wild ass--guess
are you after max power -at one rpm--or after more power at full throttle whilst retaining proper throttle response throughout the entire power band .
Pipes can do lots of things -but unless you outline the type response you want from the engine -- you can simply waste your time .