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GMC Performance Monitors

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Latest Customer Reviews

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


Screen is the right size.

Reviewed By Frankie B (WAVERLY, KS) Reviewed for a 2013 GMC Yukon —5/18/2016 11:23 AM

Fairly easy to download and install tuner. Screen large enough to easily read but small enough to not be obtrusive. Good menu services.

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DiabloSport inTune i2 Tuner Reviews


2004 gmc sierra 1500 slt 4x4

Reviewed By edgar l (Clifton, CO) Reviewed for a 2004 GMC Sierra —4/11/2016 6:54 PM

Decent tuner, i like that you can adjust parameters such as spark, fuel, shift pressure etc.

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DiabloSport Trinity T-1000 Programmer Reviews


Exactly what I was looking for.

Reviewed By Donald S (TECUMSEH, OK) Reviewed for a 2005 GMC Sierra —2/13/2016 7:22 AM

Tuner has very good tunes an abLe to upload custom tunes via download or micro chip. Can't beat this tuner the Trinity customer service SUCKS!! I emailed them asking how to make the tuner to power down once the ignition is turned off after 4 days I got a response from them, all they said is to unplug it from the ECM port. When i mentioned wanted to use the gagues feature while driving the CS Rep came back with "sent it back where u bought it an get a refund then". That isn't cool at all.

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