Need to Mellow WOT Power at high revs

[stay_upright]

Originally Posted by Davehuge

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?)