Hasn't worked yet
"Worling with tech support to be able to download tunes. Has been weeks. 2005 chevy 3500 6. 6 not plug and play what so ever even if everything went smooth"
Cummins
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SKU #: BUL-40420
MPN #: 40420
Bully Dog GT Diesel Tuner & Monitor 03-21 Cummins/ 01-16 Duramax/ 99-19 PowerStroke
Description
Bully Dog's BDX hand-held performance tuner is specially designed, so you always have the edge you need to tackle tough terrain or pull a heavy load. This sleek handheld tool combines flash and convenience with the ability to download the latest product updates via the cloud. BDX's built-in WiFi keeps your tool up to date on groundbreaking new features, enabling you to run the most current dyno-proven calibrations, as well as the latest firmware, and up to 10 custom tunes. Bully Dog tuning devices will not modify or delete vehicle emissions. Tunes that are preloaded have gone through hours of testing to ensure the safety of drivers and the environment.
MODEL YEAR COMPATIBILITY:
2003–2021 Ram 5.9L / 6.7L Cummins
1999–2019 Ford Powerstroke
2001–2016 GM 6.6L Duramax
IMPORTANT NOTES:
All software, including the Device Updater, is NOT Mac compatible. A PC with Windows Vista/7/8/10 will be required.
The unlock cable is NOT required for 2013-2017 Cummins vehicles as long as the tuner has been updated to the latest version.
The unlock cable is REQUIRED for 2018-2021 Cummins vehicles and is sold separately.
Enter your zip and we'll see if installation is available.
- Request quotes from local installers at checkout
- Compare options and choose the best fit for your install
About WrenchConnected
WrenchConnected is an independent installation marketplace operating in partnership with Diesel Power Products.
How it works
After checkout, we route your vehicle info and part SKU to verified installation shops near you. Local installers review the job and submit competitive bids; you pick the shop you want based on price, reviews, and availability. Your name and email stay private until you select an installer.
Pricing
You pay for the bid from your preferred shop. The full amount is shown before you confirm — installers cannot add charges without your written consent. Payments are processed securely by Stripe.
Your privacy
During bidding, shops see only your service ZIP code, vehicle year/make/model, and the part SKU — not your name, email, or address. Only the shop you select receives your contact details after payment. We never sell your personal information.
More detail at wrenchconnected.com.
NOTES:
- This product will not allow for the removal or disablement of factory emissions equipment, such as EGR (Exhaust Gas Recirculation) or DPF (Diesel Particulate Filter).
- Product is not returnable if the packaging has been opened and/or product has been installed.
- This product will support Ram truck applications with the Aisin transmission option.
- No 2013 Ford Cab and Chassis support
About Bully Dog
Bully Dog Tuners
When looking to add power and fuel economy to any diesel truck, typically the first thing that comes to mind, or is recommended, is to install a diesel programmer or chip. Unbeknownst to many, adding horsepower can and WILL deliver additional MPG's, so you can basically have your cake and eat it too! But how? Simply put, unless you consistently drive aggressively, having the extra power will make the job of moving your 8,000+ pound truck easier, hence not having to work as hard.
But now, which one is right for you? Bully Dog Diesel has been in the diesel performance tuning industry since 1998 producing various Bully Dog Tuners and have gained loads of notoriety for their various devices and tunes over the years. For anyone that's been affiliated whatsoever in the industry for some time will remember the days of the Power Pup and Crazy Larry tune files that delivered unparalleled ground pounding torque. But from those days, Bully Dog Performance Chips have come a long ways in terms of tuning and the devices which carry those tunes. With intuitive tuners and monitors such as the GTX and BDX devices to tune your truck that feature WiFi connectivity for easy updates to their GTX Watchdog for gauges and diagnostic troubleshooting, and everything in between, Bully Dog Performance has a solution for every need.
And guess what, Bully Dog isn't merely limited to programmers. Seeing that the industry needed a lifetime serviceable DPF (Diesel Particulate Filter) that outflowed the factory units at a comparable price, Bully Dog went to work and released their line of Performance DPF's that allow you to have the added power you want, without all of the headaches. If Big Rigs are your thing, the Bully Dog Big Rig division is for you. With advanced tuning, turbo upgrades, manifolds, and more for Caterpillar, Detroit, and Cummins ISX, you'll gain the extra power your semi needs, plus the extra fuel economy that will deliver a nice dividend each month. Especially if you're an owner-operator that's looking to reduce expenses, the ROI on these upgrades is impressive, coupled with the fact you'll be passing the rest of the pack up those grades.
MichaelThe increase of power is noticed, BIG TIME. Very simple installation. Worth every dollar you $pend. You won't be disappointed.
Bryan
The Bullydog GT really opened up the power in my 2014 Dodge Ram 2500 cummins
NTBSOT
Great product. Simple install. Noticeable power and performance. I like the defueling, comes in handy here in Texas when it's blasted hot out and your running the heck out of the truck.
Brad
I keep the Bully Dog on my truck at all times. Never had a problem with it, and being able to change the mode with the touch of a button is awesome. Easy to install and use. Have recommended to several people.
Aaron
Easy install. Customer service was great. Having had it long but can feel the difference when towing.
Jennifer
Bullydog gt tuner works great on my 08 dodge 2500 6.7l. The power levels are perfect for what I use it for. Towing heavy loads on the tow tune are much better. The truck rarely downshifts going up hills unlike before without the tuner it would run out of power. I recommend the bullydog gt diesel tuner to anyone the a diesel truck!
Video
Boost It | Bully Dog GT Tuner
Looking for more power out of your truck? The Bully Dog GT Diesel Tuner & Monitor is the solution. This all-in-one device provides customizable tunes, real-time performance monitoring, and diagnostics to maximize your trucks power, whether youre towing, hauling, or just looking to boost performance. With easy-to-use features, you can adjust tire size, shift points, and more. Plus, it’s environmentally conscious, ensuring your vehicle’s emissions remain intact. Get the power you need without the hassle, and keep your truck running at its best with the Bully Dog GT Diesel Tuner.
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Overall rating: 3.212766 / 5 from 47 reviews.
AI Generated Review Summary
The Bully Dog GT Diesel Tuner & Monitor offers a sleek handheld tool for performance tuning, with customers appreciating its ease of installation and the ability to download the latest updates. While some users praised its performance, others reported issues with installation.
Summary topics
- Tuner Performance: 13%
- Installation Ease: 10%
Review topics: ["service","power","performance","install","issues","buy","tuner"].
Review highlights
- "Great product, installation wasn't bad after you tube video." —
- "I recommend the bullydog gt diesel tuner to anyone the a diesel truck!" —
- "Great product ,,, fast shipping,,, excellent customer service" —
Reviews
Don't waste your money on bullydog
"I paid for this product only to have issues downloading the "new" program as the device did not come pre-programmed as it should have, especially seeing as i provided vehicle info upon ordering. This product should have arrived with the correct program. Also, good luck getting any customer or tech support as I tried repeatedly to do that as well, was sent links to forums and chat rooms or worse, sent to a chat bot and not a live person who could actually assist me. I tbe end I realized that bullydog does not stand by their products and I will never buy or use their products again. ZERO stars."
Fried my ecm
"I don’t recommend fried my computer I’m trynna get reimbursed"
Worked great easy to install
"Worked great easy to install"
I installed tune to truck
"I installed tune to truck and it started glitching on my truck and causing random codes bad shifting overheating and numerous other problems and returned truck to stock and all issues went away. Won’t buy again"
Great company thank you
"Great company thank you"
Nice tuner
"great tuner for the price, I do wish I got a little more miles per gallon"
No support
"I wasted over 400 bucks on something that won’t work on my truck and cannot return it back. Won’t do business with these folks"
Does not delete all the
"Does not delete all the codes I had to order a mini max tuner for $687 and see if that will work Short of read The fine print"
Gt diesel on 2002 7. 3
"Really opened up the truck put a KC 38r on as well really has the power with the get tuner"
Q&A
- I wanna just hook it up with an obd2 cable? Does it come with one or whats the deal with that? I dont wanna use the cloud
- Yes, this is going to come with an OBD2 cable.
- I have a 2015 Ram 2500 with the 6.7 Cummins. My question is does this tuner offer any transmission tuning?
- This particular product does not offer transmission tuning.
- My vin number doesn't match the numbers you show.Mine is 1GHDT13S522242442
- Hi there, we don't specify a VIN for this product. That said, looking up your VIN, it shows to be an Oldsmobile Bravada which this product will not work for as its specific to diesel vehicles.
- Will this work on my stock 03 cummins? No pods needed
- Yes this would be a great addition to that truck. Thanks for asking.
- Does shift on the fly work with the 03 Cummins
- Good question. Yes the "Shift on the fly" function will work with that rig. Let us know if we can help further. Thank you.