RPM Power- I pretty much stays put with the arm 2.5 inches back unless I'm rolling along at say 1st gear and just whack the throttle. As for gas mileage, I can't compare it with stock because the bike was never ridden stock. It seems to drink more than my R1 though. Sparky- As far as the mapping and fuel pressure, what ever Lee set it up as is where it is. His livelyhood relies on the confidentiality of info like that and I wouldn't want to reveal any of his tuning secrets... Sorry.