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I JUST BOUGHT A HYPERTECH POWER III PROGRAMMER BUT NOT SURE WHAT TO CHANGE SOME OF THE SETTINGS TOO. ALL I HAVE DONE TO MY 99 SILVERADO IS A COLD AIR INTAKE AND BIGGER TIRES SO FAR, BUT WITH THE PROGRAMMER I CAN CHANGE REV LIMITS AND SHIFT POINTS AND ALL KINDS OF THINGS, BUT I DON'T WANT TO SCREW ANYTHING UP. IF ANYONE KNOWS ANYTHING ABOUT THIS PLEASE HELP! I HAVE A 4.8 AND I DON'T WANT IT TO BLOW UP!
 

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Where did you buy it at? Was there any form of instruction booklet that came with it?
 
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