Anyone here have a 99 Denali with a Nelson tune for fuel mileage? I have a guy here at work wanting to know what kind of mileage he could expect with a tune. He is factory stock right now and getting about 15 mpg.
Anyone here have a 99 Denali with a Nelson tune for fuel mileage? I have a guy here at work wanting to know what kind of mileage he could expect with a tune. He is factory stock right now and getting about 15 mpg.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
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