Thanks a bunch guys. I think I am going to go for the HMF quiet one. Would I have to rejet, if I went from my White brothers R4, to this HMF? Thanks again!

 

now i know why mine has rust spots on it . it seems like no matter if i dried it after washing it still got them. but honestly i guess you cant try to start taking care of something 9 months after you already owned it.

 

Those pipes are probable pretty similar... you may be able to get away with not rejetting. If it was much of a difference you would be running a little rich so you don't have too much to worry about. Check your plugs and if they look dark or wet you may want to think about a rejet, but you could run it a little and see if that is needed first. Good Luck.