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Fresh air. Frog skins on the stock air box and nose piece. Side vents. Change clutching. Make sure you are getting propper rpm (7900ish). Thing can, some are robbing power. Shock tower vents and hood vents. WAY rich on oil from stock, Check your ratio. I milled my head to even comp. Run 87 oct gas. HRP bracket and two wheel kit. gear for what you do. Not all 800's beat me but some do. good luck. You'll love it. BDW; DD service reg.