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  1. J

    Milage Helper Maybe

    I don't normally condone something like this since there always seems to be an ass bite back Since the Gas prices are up and so is everything else I am sharing a HP TUNERS template from my 5.3 l 2003 Yukon that has been running around 24mpg hwy and 20 or so city USE AT YOUR OWN RISK USE AT YOUR...

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