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GMC Sierra Performance Chips & Programmers

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Latest Customer Reviews

Range Active Fuel Management Disable Device Reviews


Great product

Reviewed By C L (Lake Worth, FL) Reviewed for a 2017 GMC Sierra —4/26/2018 6:21 AM

I have a 2017 GMC Sierra 1500 Crew Cab SLT with the 6.2L and 8 speed tranny. The drone from my Flowmaster 40 series muffler was unbearable at highway speeds when it dropped to 4 cylinders. This product fixed the drone now that I have all 8 cylinders working all the time. The blue LED light is nice and subtle at night.

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Hypertech Max Energy Programmer Reviews


Hypertech Max Energy Programmer

Reviewed By smith, t (lawrenceville, GA) Reviewed for a 2004 GMC Sierra —4/22/2018 10:19 AM

This is a great programmer to have, especially for wheel size changes.

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DiabloSport Predator P2 Tuner Reviews


Finally, Tuned 2013 GMC

Reviewed By RICHARD K (AUBURN, WA) Reviewed for a 2013 GMC Sierra —4/10/2018 2:00 PM

Months of reading AA Forums and others, I went with predator p2, the instruction manual, was step by step, The down load took minutes to do from my pcm,I fully charged my battery prior to,And no power to anything else,I plugged in the P2, Followed directions and chose 87 oct performance tune,AFM OFF (YAAAAH), AND Diablo trans tune and speed limiter off,My gmc 5.3 now starts and runs better, Accelerates (no pause) with more power,Trans shifts are firm,(No soft or hunting shifts), Im happy.

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