[redpoint5]

I have been aiming for 80% engine load during acceleration for no reason other than I heard engines are generally most efficient (most unit power per unit fuel) at 80% of full capacity. I don't know if 80% engine load equates to 80% capacity, or the basis of the 80% claim in general. Any info on this appreciated.

Thank you Old Mech for the detailed explanation of manifold vacuum and MAP.

FYI, my UG shows something like 25% Engine Load at idle, and falls several points below 100% at WOT.