Um, how does lightened rotational mass make a difference in power? I mean, when you're in gear and pushing against the road, the effective "rotational mass" on the engine equals the entire mass of your car, multiplied by some radius that you could figure out from your total gear ratio and tire size. So a little pulley is hardly going to be significant.
I still have a hard time seeing where 8 foot pounds come from, unless the two pumps are imposing really gross amounts of wasted drag at high revs, which you would think the car companies would not allow if they're trying to squeeze out better mileage.
If a 25% reduction in pump speeds yields 8 foot-pounds, that would imply that using all-electric pumps could give you like 20 foot pounds! At least at the high end. Wouldn't tuners be all over a mod that yielded that much?
