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Originally Posted by OrangeCrush
Drive the truck for a week like normal and tell us that you averaged 12 mpg.
I'm betting not.
A performance tune will usually drop your mileage roughly 2 mpg. If you're averaging 12 mpg, you either a) are babying it or b) don't have enough driving to collect good data.
Typically bigger tires will give you 9 mpg. Installing gears will usually bring it up 2 mpg. A performance tune won't do that.
Drive a few weeks and let us know.
Mark
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Orange, okay, you called it...10.9! Up from my 10.4...but not where I thought it was going to land.
Oh well, looking forward to driving it with the new gears...anything to give it more umph that keeps me out of the single digits.
Keep us posted on the conversion and the associated costs. Good luck.