Quote:
Originally Posted by Old Tele man
...but, also notice how "sometimes" during half-throttle operation, the two bottom load lines "cross" one another (at about 3,500 rpm), meaning that "sometimes" half-throttle operation is actually better than "full-throttle" operation (bottom graph)!
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The graph in question actually shows horsepower per mass of fuel.
fuel maps are almost always richer at WOT for any given condition then partial throttle. The idea is if you are WOT, you want max power. The minor amount of extra fuel provides a minor amount of extra power.