[spacemanspif]

Ethanol has less energy than gas, I thought that running E85, even E10, required more fuel to be used to compensate for the lack of energy. The benefit is higher octane and thus being able to run more advanced timing but I thought that was for power, not efficiency. As far as tuning with a laptop: I thought Toyota was anti-tuning, keeping their computers locked and tunes encrypted. If they have changed, that's great news for the tuning community but everyone I know with Toyotas is running piggy back computers or full stand alone engine management.