I want to know why electric fuel pumps for race cars have capacities ranges of 71 - 90 gallons per hr at pressure? they don't burn anywhere near that, do they? when looking at pumps, those capacities seemed pretty common. why? weight is a consideration in race cars as well as airplanes, right? the Holley red pump, 71 gal/hr @ 3 psi weighs 3 lbs and is huge. my renesis could never use half that capacity, right?