The 75% "Best Power" and 75% "Best Economy" couldn't both be actually
75%, could they?
Yes, they could. You are using more gas at the 75% best power setting
than at the 75% best economy setting.

Sorry, I mean they couldn't both actually be 75% for the same MAP/RPM combo.

The leaner setting would have to be developing less power, wouldn't it?

The thottle and mixture levers may be in a different position in order
to achieve the same MAP/RPM, as a result of using the fuel more or less
efficiently.

Jose
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