Me and my buddy both have raptor 660's same year. I have a full Hmf pipe, dial-a-jet kit, pro-flow filter kit with no air box lid and a Big-Gun cdi box. I am running stock tires and rims. Gears and suspension are stock. My buddy's raptor is completely stock everything no pipe or air filter. In a drag race on the line we are neck an neck but at the bottom of 3rd he just pulls away an by the time we hit 5th he has a good 4 bike lenths on me i need help.??? Any suggestions.?????