Ok, I've done it. About a week ago I swore I'd keep my truck in the tac's green zone to give you guys an idea of the MPG increase with the SuperCharger.

Before and after install Everything on the truck is pretty much the same.

Before 12.7 mpg
After 15.8 mpg

Im figuring by the total miles traveled vs gallons required to fill again.

I should note, the After is Premium, and the Before is Regular gas.