If you put on a bigger turbo, EDM 2. 4's, 4" exhaust, AFE and a VA Box - what fuel mileage (not towing) can one expect at say 70???? I'm wondering if mods like this will destroy your fuel mileage? Now I know the right foot can kill mileage - I'm just interested in real world experience in traveling and mileage on rigs like this?????