FMF 4 stroke stuff is sub-par.
HMF is good but too loud.
DG is crap
Sparks is $$$$
Big Gun is meh, ive heard of problems with rusting/poor fit and finish
I dont think the yoshi sounds all that great
E-series is meh
I've talked to you before, so as you know i have the Procircuit T-4, love it, but it is loud... I've never tested it with a sound tester but it is probably in the ballpark of 100+ DB with the current setup. Then again I always ran the 2 inch endcap along with no quiet core and as of right now, no spark arrestor. Sound levels should be reduced significantly with the quiet core.
have you rejetted yet? if so you definitely should, my 250 was lean in stock form.
I've messed around with plenty of exhausts, so if you have any questions, shoot.
-Ryan
Respect is earned, never given.
2002 250ex- SOLD.
Creator of the 250EX Performance FAQ. For 250ex headwork and various porting , please email me at flyinryanporting@gmail.com