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2004 Chevy Express Performance Chips & Programmers

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Latest Customer Reviews

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


Motorhome/ Chev Chassis gas 6.0 Installatiion

Reviewed By Robert R (Milton, FL) Reviewed for a 2008 Chevy Express —5/1/2013 3:46 AM

As you can imagine getting any type of improvement in power or gas mileage from this type of a vehicle would be a huge benefit. The aerodynamics are just not there for streamlining this type vehicle. Therefore one has to hope that any improvement with this vehicles performance could come from an aftermarket device. I have good news to report on the power provided by the Bully Dogs retuning of the 6.0 gas engine, acceleration through the power curve is excellent, gas mileage no improvement

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Jet Performance Programmer Reviews


Easy To Use Performance Programmer

Reviewed By Larry F (Millington, TN) Reviewed for a 2003 Chevy S10 Pickup —9/18/2017 1:31 PM

This programmer could not be any easier to use. I recommend going online and print a copy of the instruction manual (about 5 or 5 pages) because there were no instructions with the programmer. Most people won't need the manual, but nice to have. I went for the highest setting that requires high test gas, firm shift, and 10 mph higher shift points. I did notice a little more power, but the real winner was the transmission, with much better performance. Good buy!

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


Bad ass Chevy

Reviewed By Marcus E (HEMET, CA) Reviewed for a 2012 Chevy Silverado —6/19/2017 9:18 PM

I have a 12 Silverado ltz 6.2 6 speed trans already a Bad Truck but since I added the Dog it drives like a Vett sh__

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