No matter where you live in this world, you would agree that the most talked-about upgrade for the most popular trucks is the tuner.

Saying that this topic is all over the place wouldn’t be wrong. The GM’S Duramax tuners have been the best in the mainstream markets for the past couple of years.

These tuners offer a variety of features and several customizations to suit the requirements of each driver.

However, having too many options make it difficult to make the right choice. That is why we have compiled a list of LB7 Duramax tuners & buying guide, that gives them the power to speed through empty roads so you can have a clear taste of adventure.

Comparing Best Tuner for LB7 Duramax

Fuel Mileage
Power Gains
Bully Dog 40420 GT Platinum

Bully Dog 40420 GT Platinum

  • Increased torque and horsepower
  • Initiates DPF burnoff
  • All-in-one gauge display and free internet updates
  • Exclusive driving coach feature
  • Universal mounting suction cup

Although people wouldn’t buy a performance tuner only to increase fuel mileage, this Bully Dog tuner really helps you save a lot of money on fuel. And this is why we have this tuner on our list.

This is a deal-breaker for many people as they drive their diesel long haul. Its standard presets include – economy tunes, sport, and tow. Of course, adjustable and economical driving habits are always beneficial for everyone.

When it comes to pricing, the Bully Dog GT is usually available for a little less than the Edge CTS2. This unique product is well-matched with all Duramax 6.6 trucks from 2001 to 2015. As for the latest models, they are working on their coverage.

Not only that, but it also offers a ‘Safety Defueling’ feature for its users, so they can have a worry-free experience.

Therefore, whether it is the engine coolant temps, transformation temperatures, over-boost, or exhaust gas temperature (EGT) – the Bully Dog product will cut the fuel in such a scenario.

It is a significant feature because it ensures that your transmission and engine will provide a hassle-free service for years to come. Since all the essential engine data can be easily monitored, you wouldn’t have to worry about potential expensive bills.

Although the display is not touch-enabled, it comes with a full-color display with multiple color schemes to improve readability. Also, it promotes better focus on driving during both daytime and nighttime, instead of being blinded by the tuner display on your dash.

Another great feature of the Bully Dog GT is the Driving Coach. It observes driving attributes and trains the driver with visual and audio feedback to improve their driving habits.

The Bully Dog drivers claim that they can save up to 37% on monthly fuel costs by adjusting their driving habits. Hence, the Driving Coach feature helps you learn and make adjustments accordingly.

  • It comes with a built-in defueling feature
  • It protects your truck’s engine
  • Its Driving Coach feature helps make adjustments and reduces fuel cost
  • It displays daytime and nighttime features
  • Touch-enabled display feature is not available
Edge 85300 Edge Diesel Evolution CS2

Edge 85300 Edge Diesel Evolution CS2

  • Slim and sleek design
  • One-touch easy menu navigation
  • Rev limiters – adjust the speed
  • Correct speedometer
  • Internet updatable

The Edge 85300 Edge Diesel Evolution CS2 is an excellent choice with its variety of preset maps and large power gains. Another great feature is its 5 inches bright and comfortable-to-read touch display. We highly recommend this tuner because it provides the best experience without emptying your bank account.

The Edge Diesel Evolution is available in-vehicle line-specific part numbers and covers all 2001 to 2015 6.6 liter Duramax trucks, from the 2500 chassis to the 5500, and several Cummins well as Powerstrokes trucks.

Apart from its standard features, including gauge displays, multiple tune settings, rev limiter adjustments, and speedometer – it will let you enjoy swift turning that most tuners don’t offer.

It also has a high-resolution, full-color display with 5 inches, touch-enabled screen. Not only that, but it also has color mixers to customized backgrounds, needles, and gauges. Some tuner displays don’t have the best displays due to the screen’s gauge color choice or size.

When it comes to Edge Diesel Evolution, it doesn’t have such problems because it changes all the colors of LCDs to match your requirements. Its high contrast colors help you easily see critical gauges, which is critical when monitoring temperatures and other important engine data.

Its other features are fuel pressures, tune torque management, and several additional calibrations. Moreover, this unit does not support shift firmness or shift points for the applications of Duramax.

Talking about the plug-and-go types, it is already preset with tunes for towing, performance-oriented uses, daily mix, and mileage. It also contains a notification center so you can get alerts and stay aware of any issue.

  • The ability for large HP and TQ gains
  • Offers a variety of present tunes for plug and go used
  • Comes with 5 inches of full-color LCD
  • Unable to tune shift points
Hypertech PPE Xcelerator GM

Hypertech PPE Xcelerator GM

  • Engine diagnostics – data read in real-time
  • Read and clear DTCS
  • Transmission reset and quick learn feature
  • USB side-plug for available updates
  • Gear ratio and speed limiter adjustable
  • Additional torque and horsepower

Another reliable tuner we have is the PPE Xcelerator, which is manufactured in the United States. It was particularly created to improve shifting characteristics, throttle response, and add more power without requiring air upgrades and expensive fueling.

This tuner can optimize fuel efficiency as well as a stock engine’s performance. Not only that, but it can also tune engine setups, including a cold air intake system and a free-flowing exhaust.

PPE Xcelerator lets you read and clear Diagnostic Trouble Codes, speed calibrations for oversize tires, adjust gear ratios and adjust the speed regulator. If you want to upgrade to the high-performance Hot or Hot+2 versions, you can simply do it by connecting to the PC without any hassle.

Another great feature of this tuner is it has substantial power gains, including – 2001-2005.5 LB7 and LLY gaining up to 220 HP and 332 Ft/Tq. For the 2006-2010 LLY, LBZ, and LMM trucks, one can enhance power by 335 Ft/Tq and 225 HP.

Since it is an easy-to-carry style programmer, it does not mount up to the dash. But it doesn’t affect its features and operations, and they remain similar.

Apart from that, it can monitor the balance rates of the injector which makes potential issues of troubleshooting or monitoring easier and hassle-free. Most customers of PPE Xcelerator have a great experience due to its ability to handle the extra power. Even this tuner does not have a fancy LCD touch display, it is still the choice of several individuals.

  • Manufactured in the United States
  • Substantial power gains
  • Designed for having power gains even with stock setups
  • Outdated design
  • Quite expensive
Hypertech 3000 Energy Spectrum Power Programmer

Hypertech 3000 Energy Spectrum Power Programmer

  • Hypertech power tuning and diesel vehicles
  • E-85/Flex-fuel vehicles and a top speed limiter
  • Automatic transmission adjustments
  • Fuel management and a speedometer calibrator

Hypertech’s Max Energy Power Programmer is your ultimate performance tool to boost the engine efficiency, fuel economy, and overall performance of your car. When using the Hypertech tuner, you will literally feel the enhanced torque, extra horsepower, and functional transmission!

It comes with several features, such as you can increase the RPM limiter of the engine, recalibrating the speedometer, expanding the RPM range of the engine, read and clearing DTCs, changing the temperature of the cooling fan and odometer for new tires, adjust the shift points of the transmission and shift firmness, and a lot more.

Not only that, the Hypertech tuner enables you to return to your stock settings at any time you want, such as when you need to return to the dealer.

If you see a “Cal not found” message on the Max Energy screen, you need to know that the 32501 model can be modified on the Internet, which means that you can download the new version of the program free of charge by connecting the unit through a USB cord to your computer and going to and then to Help.

Don’t forget to turn your key on to the “ON” position in the ignition without turning the vehicle entirely on. The system is only used for one vehicle at a time, but you can still go back to your stock settings, as described before.

  • Fuel efficiency
  • Improved readability
  • Can update the program anywhere and anytime without any extra charges
  • Relatively expensive
SuperChips FlashPaq F5 GM

Superchips FlashPaq F5 GM

  • High definition, full-colored screen
  • It can be installed within minutes without the help of any tool
  • Performance tuning for towing, mileage, and daily driving
  • Improve drivability by removing excessive downshifting
  • High-speed processor to allow faster programming

Superchips is a renowned and reliable business that specializes in diesel engine power-ups. The company has over 28 years of experience in the industry, and they are known for providing tested products that yield performance. Its home base is in Sanford, Florida, while each and every tuner is produced in the United States.

People who want to increase the power and speed of their vehicle should go for Superchips FlashPaq as its performance chips are perfect for fulfilling your requirements.

As compared to other engine tuners, the company’s line of Flashpaq products are recommended as the best and most sought-after and are offered for a wide range of engine styles, including this tuner.

For all cars and heavy-load towing trucks and SUVs, the Superchips Flashpaq is an excellent product that has, again and again, provided a notable performance improvement. This Flashpaq tuner is 6 x 6 x 6 inches in size and just 5.6 ounces in weight.

With black buttons and a display screen, it has a sleek red interface. Most trucks or SUVs are needed for heavy towing purposes, such as the Cadillac, Hummer, Saturn, Buick, Chevy/GMC, Pontiac, and Isuzu – it is a handheld tuner that provides various performance tunes. The product gives full drivetrain tuning for a Chevrolet truck.

It comes with an easy plug-n-play feature and can read diagnostic codes in case of an emergency or danger. It is easier and quicker to calibrate the odometer and shift points for the wheels of the car or truck. In fact, you can even make changes to the gear size.

  • Fuel efficiency
  • Improved overall performance
  • Produced in the US
  • Increased speed and power
  • None claimed yet
GDP EZ LYNK Tuner with GDP Tuning

GDP EZ LYNK Tuner with GDP Tuning

  • Latest cloud-based tuning device
  • Manage ECU profiles and record catalogs
  • App Guided programming is available

EZ LYNK Tuner is an advanced tune delivery and vehicle diagnostic system that helps you troubleshoot potential issues, directly deliver tunes, and more remotely tap into the ECU of your vehicle.

This tuner comes with a user-friendly ecosystem, professional technical support, and a real cloud distribution system, so you don’t have to visit an auto shop now and then.

This price provides lifetime support via GDP for custom tuning. For all diesel powerplants, GDP is a well-respected and knowledgeable tuner. Send GDP a call once you receive your, and they will ask for the system serial # and VIN to connect your vehicle to the cloud in minutes and deliver your tune!

EZ LYNK orchestrates the details automatically with EZ LYNK Cloud for sending and receiving the technician’s data. It essentially removes the need to email diagnostic files, load unverified data from SD cards, and use PCs to troubleshoot simple problems.

Technicians can also handle customer data corresponding to vehicle details, i.e., data logs or engine profiles, conveniently and securely over the EZ LYNK Cloud.

With a few taps of your finger, the interconnected ecosystem helps you obtain and use the tailor-made tune. This enables you to assert actual ownership and unleash your vehicle’s full potential. Stay up to date with the technology now by automatically receiving vehicle firmware updates when they are posted.

Users can easily exchange data logs from the main gauge display screen conveniently, and bookmarks can be added to attract interest, if desired, in the particular points of a data log. To further boost the user experience, graphical web-based datalog viewing solutions will soon be integrated into the EZ LYNK Cloud.

  • Windshield mount for phone or PC
  • ECU unlocking of specific vehicles
  • USB/OBDII Cable
  • Relatively expensive
  • Doesn’t have a screen, so you have to use your phone or tablet for monitoring everything
SCT Performance 40490 Tuner

SCT Performance 40490 Tuner

  • Built-in WiFi for quick updates
  • Cloud custom tunes and backs up factory tune
  • Monitoring and Data logging
  • Easy and quick installation
  • Reads and clears DTC codes

With the SCT 40490 BDX Performance Tuner, you get to experience the potential and power of your vehicle. It comes with preset-tuned files and lets you maximize the performance and power output of your car, SUV, or truck.

It has a sleek design with a full-color display and customizable gauges, so you can data log, track, and adjust powertrain performance to provide increased torque and horsepower to the vehicle.

The BDX Performance Programmer offers dyno and street-tested tune files developed by the experts of SCTs. You can choose from multiple SCT tuning levels as well as upload 20 custom files from our custom tuning dealers across the world.

Its Wi-Fi capability allows its customers to receive and send tunes over the cloud without uploading or downloading files using a PC. From tire and wheel size calibration to timing and rev limiter adjustments, it enables you to adjust the vehicle to perfectly suit your requirements.

In real-time, you can even track and monitor a customizable table of engine parameters by using this tuner. With the HD color for better readability, gauges display is crisp, and data logging ability, you can track your vehicle’s performance and watch it later with SCTs free Live Link software.

Playing your tracking video later helps you improve your driving habits and have better driving experiences.

  • Comes with thousands of tunes
  • Sleek digital display
  • Full-color LCD
  • Built-In WiFi
  • Cloud-based tuning software
  • The quality can be improved

Tuner for LB7 Duramax Buyer’s Guide:

Best Tuner for LB7 Duramax

If you own a car backed with the LB7 Duramax, it is time to upgrade its performance with a tuner. But which tuner to go for you ask? If you’re confused about which tuner will best compliment your engine, here are things that’ll help you decide.

Easily Installed and Used

People with no experience with engine chips and turners must want a simple machine that plugs directly into the OBDII port. You should expect a smooth setup and service with this capability that doesn’t require a lot of expertise. To find out what other clients think about the service, you can also read the Duramax tuner reviews.


You don’t want to believe that’s the case, although some diesel engine tuners work well with multiple versions. The one that fits well with your truck model is the best Duramax engine tuner. Read the product summary thoroughly to decide the years and models of the truck that your machine can operate with.

ECM Download Time Frame

You want to upload the data to the machine when you are done making your settings for the adjustments to go into effect. This is achieved easily by some computers, while others take longer. To find out how long this operation takes, you can read the reviews if you don’t want to wait around.

Power Levels

Many tuners from Duramax come along with accessible pre-configured tunes. You can choose Performance and Eco options that, without any customization, make the modifications quick. With these power levels, without fiddling too much with the options, you get the choice to change the settings. Look at how many levels of power are given and what each one supplies.

Monitor Size

Are you looking for a large display that can be mounted on the dashboard? Or do you want a lightweight display that fits in the smallest of spaces? Whatever your preference is, just make sure to consider the size of the monitor when buying a diesel tuner for your vehicle.


You would like to save them for later use when you make custom tunes. To keep these tunes for you, each computer offers a different amount of storage space. To decide whether there is enough storage to suit your custom tuning needs, read the specs. With no extra room, some of the lower-budget versions do not come.


Are you actually hoping to improve your horsepower? If so, with a simple Duramax tuner, you can get away with it. However, you will need a more sophisticated computer if you hope to read DTCs, access real-time information, and build custom tunes. Of course, the higher the price will go with each feature you add.

Data Monitoring Capabilities

It helps to purchase a tuner that tracks this information if you want real-time data on the Duramax engine. You gain access to the status of the motor at any time with real-time data. This versatility helps you to see where there is trouble and gives you the ability to fix it before there is engine damage.


It is crucial to always keep in mind your own requirements for using a tuner, regardless of your choice. All of the above tuners come with a range of preset tunes to accommodate towing duties, driving around the city, or delivering full power.

There is some variance in how the various readouts are represented, and, as stated in each of the above reviews, some models have a few quirks.

The one thing that is common in all these programmers is that they are all reliable goods made with plenty of satisfied consumers by respectable businesses. Both of them will improve the torque and HP of your Duramax power plant trucks while also boosting fuel mileage and overall responsiveness.

Many consumers also experience fewer problems with their appliances going into regeneration or limp mode, which is a plus.

The advantages of a tuner are just good to ignore. With their lower maintenance and fuel costs benefits, they literally pay for themselves. We hope that this guide is helpful for you and you will make the right choice. So, what are you waiting for? Place your order now and get the best diesel tuner for your vehicle!


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