Originally posted by: iliktuwin
5 pil r u smokin crack ???? k&n filter . air bx lid off or pre filter,jets 55 pilot 17e packing that is stuc8 or 9 main,pull the packing out of your pipe thets rusted in from water soak {bottom of main chamber} modify **** hole exhuast to 2 and 1 half inch opening and add a rev bx and you half almost 50 hps to kick hondas and yamaha 450S buttts ups the bowls in oregon sand racing manur on your onias brain delemas. anywhere else your on your own......................................common use some common sense more air flow through the carb and out the butt the more power ........ ds didnt win thier high profile races by changen a whole lot.. according to dirt wheels mag. i purchased my ds from tvi and to go from stock to 55hps would have cost 1900.00so you do the math.......back yard mods of about 100.00=about the same thing