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Old 08-03-2010, 12:58 PM   #17 (permalink)
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Originally Posted by Daox View Post
I'm not trying to argue either, just getting facts straight. Anyway, actually, what I said is always the case. BSFC charts show that higher loads always provide more horsepower per amount of fuel used. Therefore, running at lower loads will always be less efficient. If he used full throttle at 2000-2300 vs full throttle at 4000-4500 it is somewhat arguable which is more efficient because we don't have a specific BSFC chart for the engine. However, running an engine (near) full throttle will always be more efficient than half throttle.
You are correct that higher loads always generate more horsepower.

What you are not considering is the torque multiplication offered by lower gear ratios.
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