I honestly think the v-force gave me more of that power than the intake, but it could have been both....I dynoed w/ the 26mm boots and stock carbs, then w/ 34mm boots and larger carbs and only gained 2hp on top...So I think the reeds is what made the difference. I'll be running pyramids this weekend....BTW, they have those upp intakes on ebay right now. Starting bid is a $1, no reserve, they are for 34mm carbs....Just thought I'd let you know....