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Hummer H3 DiabloSport Performance Chips & Programmers

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Latest Customer Reviews

DiabloSport inTune I-1000 Tuner Reviews


2014 Sierra 5.3

Reviewed By Ronald R (Boise, ID) Reviewed for a 2014 GMC Sierra —12/22/2014 7:25 AM

Truck is a lot more fun to drive now. Throttle is more responsive, holds gears longer under full throttle, and shifts do feel firmer. When getting on the gas after a turn, the truck seems to be in the right gear and accelerates better. Overall I am very happy with it.

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