Ford 7.3 chipped mileage

majorgator wrote:
I have a '96 F350 7.3L 4x4 SRW Crew Cab Long Bed with E4OD and 4:10 rear end. It has lots of mods: 5" exhaust, Tymar Intake, Stage 1 Injectors, Tony Wildman 6-Pos Chip (plus many, many other mods for towing and aesthetics). When the chip is in the "economy" position, its supposed to get the best mileage. When in the "daily" position, which is where I run most of the time, it gets about 16 MPG unloaded. When towing (and in the "towing" setting), I get about 10-12 MPG depending on what I'm towing. I don't tow more than 60 to 65 MPH for fuel consumption purposes.

To the OP, the mileage numbers you're referencing are possible with smaller injectors, big intake, and big exhaust, chipped computer, smaller footprint truck, 2WD, 3:73 gears, and without getting into pedal too much. I've read people on the truck forums claim over 20 MPG under these circumstances when not towing, but even the 17 MPG while towing a heavy load seems optimistic. Unfortunately, its not fun to drive these trucks like this. Mine is a fast, fast truck, especially between 25 and 65 MPH...but I pay for that with poorer mileage.

blderman wrote:

...This is coming from someone who has spent $5,000+ trying to make my 7.3 perform like my stock 05 Cummins; as you can see from my signature, I still miss my Cummins.

Its a common problem...going from 6 cylinders to 8 cylinders. I hope that you come around to the all that the 7.3L has to offer LOL :p