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Bully Dog GT Platinum Tuner GT Platinum Tuner - 40420

  • $449.00  Regular Price
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  • Ships Between 9/19 - 9/23
  • What Do You Drive?


  • Style:
    Federal EPA-Compliant
  • Part #:

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Bully Dog GT Platinum Tuner Part #40420 Customer Reviews

Average Rating

120 Customer Reviews

Better than I was hoping

Reviewed by Jereme B (MAYER, AZ) Reviewed for a 2004 Dodge Ram — Jun 04, 2019 9:26 PM

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Works as advertised. Had trouble installing it originally, after over an hour on the phone with tech support still no luck. Hours later I tried again and it installed without any problems. Improved fuel mileage and power in extreme mode is noticeably more. Still haven't towed with it.


Reviewed by Steve H (RISING SUN, MD) Reviewed for a 2004 GMC Sierra — Mar 13, 2019 12:56 PM

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Very pleased with my new Bully Dog GT Platinum Tuner! Noticeable difference in driving. Less throttle pedal required. Much more responsive.The installation was a bit difficult, but talking with the great tech guys got us up and running and everything was good! Barely noticeable on the corner of the dash and mounted to the included windshield mount. The price was much better than some tuners I looked at. All in all very happy! Would recommend it.

Awesome wish screen was a little lrher

Reviewed by luke g (springfield, IL) Reviewed for a 2001 Ford F-250 — May 08, 2018 4:53 PM

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Does everything and more! Wish screen was a tad bigger but it's still amazing!

04 Dodge 3500 SRW

Reviewed by Andrew J (BELTON, SC) Reviewed for a 2004 Dodge Ram — Mar 27, 2018 5:30 PM

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Never had a tuner before and decided to try this Bully Dog. I was very surprised at the difference it made in my truck and am really enjoying the extra power. Thanks Bully Dog

Exceeded my expectations

Reviewed by John G (VALLEY VIEW, TX) Reviewed for a 2005 Dodge Ram — Jan 10, 2018 4:02 AM

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Ordering was easy. Received on time. Great price !!! Bully Dog was easy to install and set up. I am amazed at the increased power. Way better than I expected. I have not driven enough to check mileage.

No difference in performance

Reviewed by P.W. S (El dorado, AR) Reviewed for a 2004 Dodge Ram — Jan 09, 2018 9:46 PM

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Found no difference in performance no matter which setting chosen

Can tell a difference

Reviewed by damon s (HENRYVILLE, IN) Reviewed for a 2009 GMC Sierra — Nov 22, 2017 5:50 AM

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Missed out on AutoAnything $50 rebate by 4 days:(! Make sure to have battery booster just in case. Bullydog updater not compatible with Mac, took multiple attempts to get the new download to the microSD card or for the pc to recognize the card.

Issues with desktop program

Reviewed by Stephen G (San Simon, AZ) Reviewed for a 2005 Chevy Silverado — Jul 08, 2017 12:02 AM

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There seems to be several people who are having issues with the program loading on their computer. The customer service is decent. They were able to install the basic tune on my programmer but I still don't have access to the computer program I need to load other custom tunes.

Love it

Reviewed by Tyler D (Garberville, CA) Reviewed for a 2002 Ford F-350 — Jun 15, 2017 6:57 PM

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It was easy install, instructions completely dead on, no problems. The immediate power on the fly is incredible, all in all, I love it an highly recommend it.

Great experience

Reviewed by Dennis K (CHINO VALLEY, AZ) Reviewed for a 1999 Ford F-250 — May 22, 2017 10:26 PM

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Worked just like it should have, I got all parts before I was supposed to which really helped. I will be using auto anything for things I expect to purchase in the future. Tuner works as advertised, got about 6mpg more after installing the GT platinum. Which is weird because the truck is so much more responsive and has way more power. Truck was always hard to start since installing the unit it starts first time every time. Not sure how it fixed problem but I like it!