Originally posted by ManInCamo
you are teh stupid for running premium.
Premium just has a less resistance to premature combustion, which is needed in higher compression, higher HP engines.
You are not burning all the fuel, and that is why your fuel economy sucks.
run a fuel system cleaner through a tank or 3 of regular, then run regular for a month or two, and you'll see.
Actually, premium has more resistance (or less tendency) to premature combustion (which I am pretty sure is what you meant).