Quote:
Originally Posted by some_other_dave
BSFC only has to do with the engine. Aerodynamics does not effect it whatsoever. It affects how much power it takes to cruise at a given speed, so it affects where on the BSFC map you fall at a given time, but it does not change the map in the slightest.
-soD
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Hucho claims in his text that should a person streamline their car,that the road load can shift so far,as to knock the engine out of it's island of highest BSFC.The car will also overspeed,and if the gearing is not changed such that the engine "see's" the same load as before the streamlining,then MPG potential from the drag reduction can suffer up to 60%.