I know nothing, compaired to you guys, but trying to wrap my head around all this info.A jet pump runs best/efficient about 8500 RPM? Right/Wrong? Also is a Motor most efficient at Torque Peak , H.P. peak or someplace else? If my motor does'nt make it to peak but goes to satisfication speeds is there more incentive efficiencly wise to increase RPM to peak? Whatever HP or Torque? Right now I run Great MPG annd great Performance (for me) just wondering on extending range mostly. My baja is a little squirrely at only 60. I don't care, it's fine and I like it. But trying to decide if maybe I should cut my impellor. Big/slow = Efficient, OR not? Would peak motor curve? help in petrol used or not.