Hello everyone I just bought a 2005 LT 5.3L 4x4 suburban. Love it so far but only had it for a week. Looking for any help on MPG improvements, as in best headers exhaust programmers CAI'S anything to help. Thanks
Welcome to the Club!! For headers, go long tube vs short tube. I think for exhausts and CAI, most will provide about the same performance increases. For programmers, I would suggest something that allows for custom tunes (or at least gives you the ability to customize the program). I have a Predator and for the money, it fits my needs perfectly.
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