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Hypertech, Inc.
On Hypertech's dyno, the Power Tuning program for our 2001 HD GMC produced a gain of 33 horsepower at 5250 rpm over the stock tuning - an impressive 14 ...
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HyperPAC
Register Your HyperPAC · Features · Feature Chart · Temp EGT Module · Instructions · Where to Buy. Test Drive a HyperPAC ...
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