OT-Hypertech Power Programmer 2002 GMC
02-03-2002, 08:34 AM
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OT-Hypertech Power Programmer 2002 GMC
Anyone have one of these or use one in a previous model year? What kind of gains did you find? Anyone have one to share for a 2002 6.0L GMC? Possibly buy one together? I don't have any experience using these but I've heard they increase horsepower and don't void the warranty?!
02-03-2002, 10:09 AM
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My 6.0 gained a little power but the best parts are, firming up the shifts ,raising the top speed limiter from 100 to 128 and adjusting the speedo for tire size, but it is not possible to share, as it will only work on one truck at a time 
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