Well I had to tell someone about the M4 and it shocked the heck out of me. After puting the system on i could not wait to start it up and hear how it sounded and i was not disapointed in the least bit. The bike sounded like a psssd off trex i loved it itwas loud like a D&D but not as annoying.

I cant wait to take and get the jet kit andtiming advance put onso that i can ride the heck out of it and see how much of a difference these modswillmake.

god i wish i knew how to put sound clips on the board[sm=shootshoot.gif]

 

congrats hope it makes good power for ya. let us know please