rejetting needed?

[tazman7]

Would I have to rejet if I went from a Eddie Sanders race muffler to a FMF muffler?

[underpowered]

possibly, i would atleast check jetting on it.

[1987 trx350x]

there is a chance you could run rich. the eddie sanders is geared alot more towards performance.

[tazman7]

Well if it is geared towards performance then there is no reason to switch right?

[1987 trx350x]

i believe the fmf pipe isn't as good of performance pipe, and might flow differently. you can tell by running the bike to operating temperature, then in 3rd gear accelerate from idle to 'screaming' high RPM's and let off the throttle and coast. if there was no misfiring when accelerating and no crackling when decelerating, your jetting is perfect.