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Something Wrong
Ok my Co-worker has a 2000 F-350 Crew Cab Long Box, 4x4 7.3L. But he is only getting 12-13 mpg.
He has the banks chip, ( not the selectable one though). He has 4 inch banks exhaust, and banks gauges for egt and trans temp.
His truck runs great. But gets poor fuel mileage. The only thing I can think of is he has 4.10:1 gears in the axles.
I say this because my truck gets 18 mpg on average. But I have 3.73:1 gears. even though mine is a short box that should not make that big of a difference.
Am I correct to speculate that his poor mileage is from the 4.10:1 gear ratio.
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