I've had alot of calls on how much hp gained from porting.Cannondale heads definately have big gains that can be made over stock.
On quads with stock modified airbox(included in porting) 7hp gain +-1hp
Quads with open filter setup 9hp gain +-1hp
Bike I've not dynoed yet but would say a 7hp gain+-1hp its definately a seat of the pants difference.
Dyno results have been extremely consistant.Look in dyno section to see hp per engine size and mods.
HP FROM PORTING
I just wanted to point out that Tim is talking about HIS porting results. As good consumers we should all insist on dyno proof from anyone who offers porting services or any performance reliabilty enhancing parts . It seems to be an acute Cannondale tradition for everyone to jump on the latest and greatest bandwagon only to have it come back to bite us in the end. Im sure it happens with all other brands as well. Im just saying if you are weary of some things dont be afraid to question them. Its your money after all .
I think anyone who been around Tim knows he backs up his claims on the dyno and at the track.
I think anyone who been around Tim knows he backs up his claims on the dyno and at the track.