hey guys
i bought a scorpion can for my gsxr 750 yesterday............got the old one off .....
1........i can belive how heavy that silencer and cat is
just about to go out and fit new can but ive noticed something
just inside the exhaust there is some kinda butterfly valve? looks similar to the yamaha exup ............the pully on the outside is slighlty corroded. what does this valve do?
its in wide open position and it doesnt seem to move with revs or anything.
i assue it moves in correspondance with throttle position?
if it doesnt move is this a problem?
cheers
Dan
