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Old 01-14-2015, 05:45 PM   #24 (permalink)
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Originally Posted by jeff88 View Post
Would the car get better gas mileage with the alternator on rather than off, since the BSFC is in a better range?
No. You're making more power with the alternator on, so the total consumption goes up. The consumption per horsepower generated goes down, but the overall consumption goes up. (There may be exceptions, but I'm thinking they are very rare.)

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