View Single Post
  #11  
Old 09-25-2017, 06:28 AM
stay_upright's Avatar
stay_upright stay_upright is offline
Senior Member
 
Join Date: Jan 2008
Location: Coventry UK
Posts: 460
Default

Quote:
Originally Posted by Davehuge View Post
No, definitely don't try to soften the power by making the fuel/air mixture bad....as mentioned previously a lean mixture could damage your engine.

Best way is to alter the way the power valve opens...

Closed power valve = Lower Exhaust Port = Increased bottom end/lower RPM power = Reduced high RPM power.
But at WOT and 3/4-max rpm I assume the power valve will be fully open and will have been fully open for quite a long time? (does any-one know rpm's the port opens as std?)
__________________
'05 Gas Gas 300
'97 Aprilia Pegaso 650
'99 KTM 200
'95 ish XR630 (died many times in Oz)
Reply With Quote