need help cousin has 99 z71 truck....which tuner?
02-26-2009, 08:51 PM
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need help cousin has 99 z71 truck....which tuner? K i know this is little off topic but my cuz has a 5.3 z71 4x4 sierra truck. He wants a hand held programmer. Anyone have a clue as to which one is best for a truck?
02-26-2009, 10:53 PM
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they're not worth it on a truck like that. i got a superchips flashpaq for my '97 z71 back when i didn't know much about them and the only thing noticible that it did was remove the top speed limiter and now i can use it to pull codes from GM's. NO noticible power gains especially for the money.
