snowracer
11-29-2007, 10:17 PM
My buddy has a 2003 Yukon 1500 with the 5.3 and wanted to put a tune into it using EFIlive and I was wondering if any of you guys out there had a tune that you had made for these that would make his truck faster?
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8100 Power 11-29-2007, 10:49 PM My buddy has a 2003 Yukon 1500 with the 5.3 and wanted to put a tune into it using EFIlive and I was wondering if any of you guys out there had a tune that you had made for these that would make his truck faster? Post over in the EFI section for better reponse..:) | ||