so i got my 480 kit installed and it runs great. much more bottom end torque. havent really got much top end out of it though because i am still in the break in period. defintely recommend it to everyone. yesterday was like the best day ever, since i blew my 450r up about 6 months ago. only took 6 months to get it up and running again. let me tell you though, that thing is hard to kickstart. go buy one everyone.