yeah a pipe is not worth the money i noticed a minimal increase in power all arounfd with the fmf fatty and a shorty pipe. and yes i correctly jetted it for altitude and heat as well
Actually the main objective of most all of the main brand exhaust systems is to lighten.... your wallet. Most of the "performance" if superficial bling that makes ya' feel like it's faster because you spent all this money and the advertisements says it's going to do it.
I'd be suprised of most folks that installed one of these systems did little more than adjust the external adjustments on the carb and maybe a smaller number might adjust the needle clip.