Best Tuners for 6.7 Cummins In 2023 – Reviews and Buyer’s Guide

Over the years, Cummins has maintained its consistency for being the top diesel engine manufacturer in the whole world. Its dedication in giving the consumers the best class models and satisfactions they want is the key to their success. Their diesel engines were designed to be reliable and versatile.

One of their products is the 6.7 Cummins engine. This is a legendary engine that provides good fuel economy, great power, and reliability. Not only that, all tuner-equipped engines can change your driving style.

Nonetheless, you need to use the best tuner for 6.7 Cummins to achieve maximum performance. Narrowed down to five, here are some top-notch tuners available for your engine. Just take a look! 


Product Name

Our Rating


Bully Dog 40420 ­GT  Diesel Tuner

Smarty Cummins Touch Tuner

Edge Products 84130 

5 Best Diesel Tuners for 6.7 Cummins Review

Different manufactures and brands continue to produce various kinds of tuners for Cummins engines. With many choices available, it is surely hard to find the one that suits your needs. Below are five choices that offer you great features. So let’s get into them!

1. Bully Dog 40420 ­GT Platinum Diesel Tuner

First in our list is a product from Bully Dog. Given its features, this is undeniably user-friendly to beginners. Let’s find out why!

Since it is equipped with a wide screen monitor, it is ideal if you are farsighted. With this, you can be able to see and monitor the performance of your car. Not only that, but this also is very easy to use as all parameters are manifested in the LCD screen, and all you have to do is to look or glance at it.

And yes, it can display up to 15 parameters with clarity. Using this, you can efficiently control and scan the enhancements and modifications of your engine. Not to mention, it includes an SD card, power cable, and mini USB cable that you can attach to the monitor.

Furthermore, this focuses on the engine’s horsepower, torque, and even fuel economy. Well, it enhances the horsepower and torque of your car’s engine to make it stronger and better. At the same time, it ensures fuel economy so you can have a better long-driving or around town driving experience.

It's very crucial to find a good place where you can mount the tuner. Also, it should provide a quicker view of the parameters. Since there is a windshield mount, you can place it in any position you want, giving you comfort in driving.

With these abilities, you are secured with superb performance and ease of use.


  • Includes night and day mode
  • Has good technical support
  • Compatible with Dodge, GM, and Ford trucks
  • Equipped with a high-resolution widescreen


  • Installation processes is a bit tricky and lengthy

2. Smarty Tuners Dodge/Ram 98.5 Cummins Touch Tuner

Another one on the list is a product from Smarty Tuner. This is ideal to have if you are looking for an interactive tuner with great features. Let’s take a look at the qualities it can offer.

This product is known to have the fastest startup time among all other tuners. Aside from that, it offers the fastest PID refresh rate and ECM download rate. With this kind of speed, you can tune your car in just a matter of seconds and won’t miss any updates about PID values.

It has a high-resolution 4.3-inch display of 480 x 272 that comes with 16.3 million varieties of colors. The screen is definitely very pleasing with your eyes because of this good resolution and beautiful shades.

With a simple plug and play feature, you can straightforwardly install and set-up the tuner in your vehicle without spending much time.

Included in this package are the SD card and a small micro USB cable that allows you to connect the updates to the monitor in a fast and direct way. It also has a real-time parameter reader so you will be able to know the status of your Cummins engine’s parameters.

Not just that, this tuner has a programmable speed limiter. This helps you control the speed of your vehicle, improves your driving experience, and limits the risk of accidents.

In addition to its features is its Power on Demand option. This handy software allows you to set 10 power levels for better monitoring and controlling. It also has a 3-cylinder high idle option which makes it beneficial in areas with cold weather.

With all the features mentioned above, this combo tuner is indeed one of the best diesel tuner for 6.7 cummins you can find in the market.


  • Constructed with a high definition display
  • Equipped with customizable limiter and speed reader
  • Comes with an easy plug and play feature
  • Offers very fast download
  • Easy to install and set-up


  • Might need to purchase a Communication Module (ComMod)

3. Edge Products 84130 Digital Gauge Insight Monitor

Edge Products are known to have a stylish design and vibe for their monitors. This model lets you monitor your vehicle’s performance  through its easy-to-view screen.

Its LCD screen has multiple gauges that are arranged orderly to have an easy tracking experience. You will be able to determine how you can improve the parameters of your engine to achieve great output. This screen can also be customized for more convenient access.

The device also allows you to keep track not just on present vehicle models but also on OBDII vehicle models since 1996. Surely, this product has superb compatibility to almost all engines, especially the 6.7 Cummins diesel engines.

Additionally, this package comes with a mounting accessory, so you can position the tuner anywhere in your car. It also has a USB cord and OBD2 cable for better updating methods, and these add-ons help you access link accessories such as EAS and HDMI plugs.

You can download free updates on the Internet, so you are sure that your tuner has up-to-date programs. With this, you can easily control and monitor your vehicle.

Also, it is equipped with a smart notification alarm that will alert you if one of its parameters is getting too high or too low, depending on the level you set it into. In that way, you can monitor your car’s performance.

With this best 6.7 Cummins diesel programmer, you can track your vehicle to ensure its efficiency. And you can do that by choosing this product from Edge. Try it out to see for yourself.


  • Assembled with a wide 5-inch LCD touchscreen
  • Can be customized
  • Easy to install
  • Allows a diagnostic port to secure safe monitoring


  • Has less focus on horsepower

4. MADS Smarty Touch Programmer Dodge Turbo Diesel Trucks S2GCummins

This MADS Smarty’s S2G has made its way into our list of the best tuners for 7.6 Cummins engines. It has notable enhancements and good reliability that car enthusiasts would love. Let’s see what these are.

Just like any Smart device from MADS, this one comes with twin devices composed of a CPU controller and a monitor, linked together by a small USB cable. Being a combination of fantastic programming and a swipe screen option, this works well with diesel engines dated from 1998 to 2008.

Its 4.3-inch touch display with 17 million colors gives you comfort when using it. This high-resolution big screen makes you see everything even clearer. Indeed, this user-friendly device is perfect for you.

What makes this more special is its built-in gauge feature that gives you the freedom to pick different configurable dashboards. It has four dashboards with different layouts, which you can customize for easy navigation.

The package comes with an instruction manual that is easy to understand, so the installation will be a smooth and straightforward process. You can place the tuner anywhere in your car, where you can view it easily.

Another great quality it has is its power levels. Using a CaTCHER software, you can choose from ten power levels, and that is essentially ideal if you want a robust engine.

One unique feature is its configurable alarms. It comes with both sound and visual alarms, which activate whenever the parameters are exceeding its limits. This gives you more alerts when the settings you put went out of control.

This is one of the best tuners you will ever see! With all its features, it undoubtedly earned a spot on this list.


  • Has a big interface with high-quality resolution
  • Can update through the Internet
  • Equipped with two configurable alarms
  • Updates are downloadable and free
  • Offers 10 power levels
  • Easy to install


  • Slightly more expensive

5. RaceME Delete Programmer ULTRA DPF 07.5-16 Dodge Cummins

If you want a product that will bring many upgrades and can be used in newer vehicles, then this is for you. And yes, it is proven to be the best tuner for 6.7 Cummins. Let us take a look at its specifications and qualities to know why.

RaceME is known to make racing tuners, and this is one of the best products it has to offer. It is not only great because of its undeniably amazing features but because it is perfect for all pickup and cars with the chassis model dated from 2007 to 2018.

This product offers a fast ECM download speed. Almost all downloads, may it be large or small, can be done in just three to five minutes.

The tuner comes with a 4.3-inch touch screen that can be personalized. It’s user-friendly and can be installed in your car within eight minutes. Once the installation is done, you can immediately check your car’s performance.

Assembled with an RT software, it enables you to program it every time you go for a drive, or you can just simply modify its timing and duration. After tuning, you can even remove the tuner, and your car can still give you an outstanding performance.

Another notable feature is its ability to scan and delete the codes quickly and easily. The time it takes to read and format these codes depends on the period you set it into. RaceME assures you also that the codes are interpreted into simple terms that anyone will easily understand.

Some of its features include the capability to effortlessly connect to the Internet, and allow the vehicle to function even in cold weather conditions. It is indeed a user-friendly and very reliable device when it comes to Cummins truck engines. You will surely love and enjoy having this product.


  • Easy to install
  • Layouts are versatile
  • Comes with all the hardware needed to unlock the ECM
  • Can be customized easily
  • Compatible with new vehicle models
  • Offers user-friendly interface


  • A little costly

Things to Consider Before Buying

Purchasing the best diesel tuner for 6.7 cummins in the market is a strenuous task. There are many things to consider before buying the right item that will be perfectly suitable for your 6.7 Cummins engine.

Below are the features and factors you need to take into account when buying the right tuner for your truck’s engine.

Ease of Installation and Use

You must look for a good tuner that is easy to install and set-up in your vehicle. With proper installation and connection between the vehicle’s parts, it can be used easily, and it can assure you it will tune well. Having loose connections might affect the tuning process and harm your vehicle’s engine.

Power Levels

Power levels are the horsepower that a tuner gives to the engine. Make sure to look for the brand and product that can give you the highest power levels so you can have a good tune to ensure the optimal performance of your car.


Before selecting one, you must know the specifications of both your vehicle and the tuner you’ve been eyeing to buy. Choose a tuner that will be highly compatible with your truck so you won’t encounter any problem when you tune-up the truck’s engine.

It’s best if you take time doing online research and read reviews to gather more information about tuners. This way, you can filter out the best ones for your 6.7 Cummins engine.

Time Frame

This is the most important feature; you must look into all the tuners before making the final decision. The ECM download speed should be fast in processing your data for the quick and better tuning process. The less time it takes, the better the tuner system.


Making changes and doing some experiments with your tuner must be easy for you. To do this, you must have a tuner that can adjust the performance capacity, allowing you to achieve the optimum performance for your vehicle.


Another aspect you must look into is its design and style. It is nice to buy a tuner that standouts aesthetically since you will mount this in your car. This factor depends on your preference and will surely test your taste about looks.

Price and Budget

Prices and your allocated budget are always considered when buying a product. It is important to have a range of how much you are willing to spend to eliminate pricey products that will break your bank.

Frequently Asked Questions

What does tuning an engine mean?

Engine tuning is the process of calibrating or modifying the internal combustion engine or the Engine Control Unit (ECU) of the car. It is to increase the power output, speed, and durability of the car while ensuring its optimal performance. And for doing this, you need a tuner device.

Is a tuner necessary to have in my car?

Of course, your car needs to have a tuner. With this device, you can improve your engine power, which helps unleash the full potential of your car for better usage.

Are all tuners listed above compatible with all 6.7 Cummins engines?

Choosing a tuner depends on the model of the Cummins engine you have. Some tuners are not compatible with the older engines, so you will have a hard time trying to make it work. However, those mentioned above are proven to be compatible with 6.7 Cummins engines.

Does the tuning process ruin my Cummins engine?

No, it does not ruin your Cummins engine if you let a professional do the work. And if you must do it alone, make sure that you read and follow the instructions well from your tuner’s manual to avoid any problems or malfunctions.

What tuner is best for my Cummins engine?

This depends on the type of Cummins engine you have. You must take into account the features of the tuner that are compatible with your 6.7 Cummins engine to ensure great output.

Final Words

Tuners are very important to ensure that your car is churning out proper performance. Remember to consider the factors mentioned in our buying guide just to make sure it will be perfect for your vehicle’s engine. May this guide help you find the best tuner for 6.7 Cummins engine currently available in the market.


I am Samantha, an automobile engineer and POD business owner. I am also a wife of Jason and a mother of three children, two of whom are twins. I am passionate about making a difference in the world and strive to be a role model for my children. I believe that hard work and dedication can lead to success, no matter what your circumstances may be. I have a passion for cars and enjoy working on them in my spare time. I am excited to be able to share my knowledge and experience with you. Stay connected !

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