7.3L fuel mileage, stock vs lifted - Ford Powerstroke Diesel Forum
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Old 03-01-2009, 05:14 AM
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7.3L fuel mileage, stock vs lifted

Hey yall, I'm still undecided on 6.0 vs 7.3 for my next truck. Whatever I get, I'm planning on throwing 6 inches at it right away with 35's. Also planning on a tuner, exhaust and CAI quickly.

So now I'm wondering if you 7.3L guys could tell me what kind of fuel mileage you got on stock tires, and after lifting & big tires? Lift size & tire size would also be helpful. I guess it would also be helpful to know if you have a chip/programmer.

As always, I do appreciate any and all input. I searched on fuel mileage and got nothing helpful.

Thanks,
Cliff
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Old 03-01-2009, 05:16 AM
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I don't really recall what king of milage I got stock but when I had 8'' life with 37's... on highway driving I could get 18mpg no problem at all... and that was with a 6spd and 4.56's... and yes of course not giving it hell
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Old 03-01-2009, 06:11 AM
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All I can say is I lost 3 mpg when i went from stock to 6" of lift and 37's. Your mileage WILL drop.
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Old 03-01-2009, 06:23 AM
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35s in mine 17-20 average
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Old 03-01-2009, 06:37 AM
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It's going to drop, regearing will help a lot to gain some of it back.

NCH
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Old 03-01-2009, 06:23 PM
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6.5 lift on 37s. about 13..... sux i know.:do: not sure what gearing but its an auto. looking into trying to get better but not sure what to do... is the econ tune by tony really help??
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Old 03-01-2009, 06:38 PM
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Yeah I like to know also I am getting 12 stock?
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Old 03-02-2009, 02:42 PM
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I am getting 14 mpg on a good day not breaking 2 grand while running the TW econ tune. Have the 7.3 sitting on 315s and 4" of lift, 5 inch exhaust, and CAI.
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Old 03-02-2009, 02:49 PM
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Will any of the tuners/chips help fuel mileage on a 7.3L rolling on 35's? Good or bad, I will probably stay away from DP based on things I've read.

Thanks,
Cliff
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Old 03-02-2009, 02:51 PM
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ive always heard dp was good. Anyway I get bout 17-18 on the highway with the chip on extreme staying out of it and using cruise control keeping the rpms under 2k
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