unbolt the exhaust from the cylinder, there should be a washer on the end of the pipe where it bolts on that reduces the size . take it out and you have found more power.
Mark
" A good friend will bail you out of jail but a true friend will be sitting beside you saying.... Dang that was fun"
Mark
Bubba ( son )
2005 YFZ450, 08 motor,Bike cam, Laeger Plus 2 a-arms, Elka shocks, GYTR Exhaust, Holeshots on Baja rims, AC Pro Pegs, G- Force axle
2009 Sponsor: Asv, SixSixOne. Oneal Racing, Houser Racing, GT Thunder, Nacs Racing, Elka