brandont70
Registered
I have an '07 Busa with Acrapovic carbon fiber slip ons. My brother just got an '07 also and it has the same exhaust , but his is louder. I mean alot louder. The only difference is that he has a BMC filter, marble mod, and a reprogrammer on his bike. My exhaust is he same as his though. Does the filter, marble mod, or tune make the exhaust louder? Please help!!!