elvism

and intake has your mpg gone down? Mine is down about 3 on highway. I remember when i had my 05 gt auto with tune/intake/pully/spacer that my mpg actually went up...same tuner as before but was just wondering. car runs great .. thoughts?

going for broke

I had a steeda tune on my 12 gt auto and the mileage on highway was slightly better then stock. I now have a 13 gt auto with a vmp tune and I'm down about 3 mpg compared to steeda tune.

rmurer

i was averaging about 19 before the tune, now im at like 17.8, with 93 octane and a lead foot

grabber blue gt

Yeah im down to about 25mpg on the highway with my AED tune. With steeda I was around 27-28. I would rather run richer than leaner though and keep the #8 cool.

choate

There is why the OP's MPG went down lol. I get like 25-26 w/ Bama 93P. No real difference than stock but I do like to push the right petal down far sometimes