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ray b
ray b is offline
#9
Dec28-07, 11:33 PM
P: 428
YES BUT
even a 4 stroke needs some back pressure
go too big on header pipes size and loose power [tork]
esp at mid range and lower RPMs

gas flow speeds and harmonic waves esp in tuning is a black art
and get worst in two stroke racebikes as some make wild power levels
but only over very narrow RPM ranges