First day I'v really been able to ride since installing the freak kit. Have made some sort runs, but today it was a toasty 44 degrees and besides I needed to carry some freight bills over to courltand . Nice little 90 mile round trip. After jetting and syching and just doing things because i'v been bored this winter it seems to run just fine. Come to think of it, it was running just fine before. Anyway to the point. Before I was running a modified air box and filter with 138 jets. With the freak now in place im running 155s curently. Completely satisfied with the kit and the results so far. Just wanted to add though. I think you can achieve close to the same performance from a modified air box. This is all seat of the pants mind you, no dyno numbers to back it up. But for those who dont want to go the route of the freak; I think the modified air box will yield satisfactory results. I mainly did the freak cause I got a good deal on it from a member here and I was extremely bored. But springs coming. Sometime....