Quote:
Originally Posted by Christ
Not with exhaust, but with fluid dynamics, which I compare liberally.
Basically, straighter pipe yields a higher available velocity, which creates a higher pressure differential across the valve, creating less potential for flow reversion. Less flow reversion means increased overall velocity, and the cycle is complimentary.
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A well designed engine can already have over 100% volumetric efficiency. I think, on engines like that, there are bends in the systems?