Hey. So this winter was pretty exciting, I finally went out and bought a brand new bike. I bought the 2008 Yz450F and I have already started buying parts for it. So far I have bought One Industries Factory White kit and new chain and sprocket. My question is, has anyone else with this bike upgraded to a White Brothers or Pro Circuit Ti-4 exhaust? I have seen some posts on here about it and some people suggest cutting one of the cones out of the stock exhaust. I think it looks really cool on there but If anyone has upgraded theirs, What kind of power increases have you noticed?