that thing is really fast. couldn't believe it. the bike just hooks and goes. rode one the other week and the one my friend had today was unbelievably fast. the thing really goes. he had the cam mod gyt-r full exhaust, and no airbox cover. the bike really impressed me today.

 

iight my dad and my bro have yfz, air box cover, where it is, what will it do if its off?