[Hethj7]

Sky is all over this one and knows what he is talking about.
After getting my Stang properly tuned on a dyno, I have seen as high as 29 mpg on the hi-way (and yes, my speedo is accurate and I know how to figure gas mileage).

It is rare that I see it that high, but I can always get 24-25 out of it on the hi-way. This is with heads, cam, intake, and all the goodies that go along with them.

I am not sure what would be causing your poor mileage, Patrick, but you can definitely get better than what you are.