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04 Z71 Should I tune it?
Ok, so Im kinda new to tuning in general and I wanna know a good programmer/tuner to buy because I want to get more MPG and generally more power from the 5.3 but Im kinda unsure due to it having 290,000 miles on it. Should I tune it, if so which programmer should I buy.- Reuben0524
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- question tune
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- Forum: Engine & Drivetrain
