Quote:
Originally Posted by marcus
got it thanks..it does make sense...its just there is a theory that back pressure allows the engine to reuse unburn fumes that stays on the enginedue to backpressure.to get a better gas mileage..???
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You missed the point about velocity and scavenging by MadMax. To reuse exhaust gas would be a valve timing design. That helps to keep the temperature lower to allow for a leaner burn.
Reducing back pressure can get you a slight increase in gas mileage, but there is a point of diminishing return. That is what we don't know. For that you would need to consult an engineering expert.
04-28-2009, 01:49 PM
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