Couldn't have said it better. Restricting the flow even if it means a better
mix is not good. Velocity and drag have an exponental relation. For you
math challenged people that means at 1xV=1xD, 2xV=4xD, 4xV=16xD, ... So at
low flow rates might help but really bad at higher flow rates.
Crash
> of them (including the one you mentioned) do so at the cost of reducing
flow
> at higher revs by restricting high volume flow.
> In other words, it works, provided what you want is increased performance
> and efficiency at the low end of the rev range by reducing efficiency at
the
> high end.
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