The RZ/CPI has a severe down bend in the intake, thus the majority of the flow adheres to the roof and of course punches open the upper
reeds way more than the lowers ( made worse by the fact that the Boyesens are on the reed box floor ).
With a VF3 in place you can make a curved blade the same thickness as the VF divider at one end ( with a ball nose radius to fit over the leading edge )
tapering down to a small radius facing the carb.
By raising the leading edge of the blade you can equalise the upper and lower reed opening ( that is the flow ).
Easy to test with a vacuum cleaner hose connected to the exit ( or a leaf blower, or if you are really desperate the exhaust pipe on your car - been there done that ).
Of course the flow bench with a velocity pitot is the real go.
I did this on a CR250 on a kart and picked up 3Hp from memory.
Ive got a thing thats unique and new.To prove it I'll have the last laugh on you.Cause instead of one head I got two.And you know two heads are better than one.
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