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Thread: Denali fuel mileage

  1. 01-13-2005 08:30 AM #1
    RedHeartbeat
    RedHeartbeat is offline WTH JUST HAPPENED?
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    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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  2. 01-13-2005 07:29 PM #2
    Hit Man X
    Hit Man X is offline Senior Member
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    I picked up almost 3mpg straight freeway with my Z and about 2mpg city...
    The superior man is modest in his speech, but exceeds in his actions. - Confucius

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