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GMC Sierra Bully Dog Performance Chips

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Latest Customer Reviews

Bully Dog Triple Dog GT Tuner (49-State Legal) Reviews


totally worth it (gmc 2500 6.0)

Reviewed By Dex B (ALBION, IN) Reviewed for a 2004 GMC Sierra —7/12/2015 4:25 AM

I got the bully dog to try and increase my fuel mileage and give me a little more giddy up when I'm hooked to the trailer. Before the triple dog I was averaging 11 to 11.5 Mpg, maybe 8 with a trailer loaded down. Now I'm averaging 14 to 15 and 12ish with my trailer. Very good investment I'm glad I got that little bugger.

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Bully Dog Triple Dog GT Tuner (50-State Legal) Reviews


06 Gmc

Reviewed By Olivia C (OKTAHA, OK) Reviewed for a 2006 GMC Sierra —3/17/2015 8:14 PM

Best ever well worth the money my truck runs great

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Bully Dog Triple Dog GT Tuner (49-State Legal) Reviews


Amazing

Reviewed By Sesar C (East Wenatchee, WA) Reviewed for a 2009 GMC Sierra —3/7/2015 12:54 AM

The reaso I bought this unit to get rid of the AFM in my truck I install a 3" exhaust no difference runs even worse after I install the tunner wow what a difference no more AFM now my truck sounds great runs even better lots of power my transmission shift really nice highly recommend.

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