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Best Diesel Tuner For 6.7 Cummins (5 Options To Consider)

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Some of you guys and gals are on the lookout for the best diesel tuner for 6.7 Cummins, and that’s where we come in to show you the best of the best.

Our picks will have you getting the most out of your powerful 6 7 Cummins engine.

After all, it is one of the most reliable engines you will ever come across, but you still need one of these great tuners so you can enjoy better fuel economy, more power, and way less downshifting.

You might hear them referred to as programmers, tuners, chip tuners, or engine performance tuners.

Whatever they call them in your neck of the woods, the purpose is all the same: optimize the performance of your Cummins diesel engine.

They attach to your window or dash and come with all leads necessary to attach to your engine’s control module.

If you think that’s exciting, it is.

Let’s get into it.

Disclaimer: Bear in mind that some of the links in this post are affiliate links and if you go through them to make a purchase I will earn a commission.

1. EDGE Products 84030 Gauge (#1 Recommendation)

84030 Edge Insight - CS2
  • Multiple gauge screen layouts
  • One-touch easy menu navigation
  • Available for 1996 and newer vehicles equipped with an OBDII port

Last update on 2024-07-04 / Affiliate links / Images from Amazon Product Advertising API

Here is an all in one digital monitor that offers you just what you need to keep watch over the vital signs of your Cummins engine.

The control and style are second to none. It is great for vehicles that are 1996 and newer.

The screen is a bit small, coming in at 2.4 inches.

However, the value is great especially if you are on a budget but still need to monitor your Cummins engine’s performance.

The device features user-defined noise alerts and even shows SAE data from the computer of your truck.

You can view parameters in analog or numeric style.

If you own other EDGE products, you can use it in tandem with those products.

It also works with other performance products as a means of reading essential engine data.

Another cool thing about this tuner is the diagnostic tool part of it.

It will display and clear the codes, and it offers a full description of what the error means.

You can use the Insights scan tool to grab and record more info about the performance of your truck.

The EDGE 84030 is a great little tuner that provides just what you need for a Cummins 6 7L engine.

You will easily see your torque, horsepower, and RPM measurements with ease, and at a great price, too.

  • One of the more affordable options for diesel tuners
  • Offers a great diagnostic tool for users
  • Easy install, good customer service
  • The screen is smaller than we’re used to seeing

  • Users noted it forgets your vehicle when you disconnect it

2. Bully Dog 40420 GT Diesel Tuner

This features a model fit and is made wide so you can see it a lot better.

It can fit Dodge, GM, and Ford trucks.

You can enter the vehicle make and model on Amazon to see if it fits.

This is not just any tuner.

The Bully Dog 4020 GT Diesel Tuner is a four in one product.

You get a monitor, gauge, and engine tuner PLUS a diagnostic tool!

This is a great gauge for helping your fuel economy out.

Diesel is still expensive, even after oil prices dropped.

It’s best to make the most out of it!

The display is second to none.

You can keep watch over 15 different parameters relating to performance at once.

Just take a look at the dynamic LCD whenever you want info on how your truck is faring.

Next, you can choose your preloads.

You can make use of the multiple preloads included, and you can include up to 10 custom tuning files in total which will have your vehicle and performance in top shape.

Lastly, one thing we really liked was the inclusion of the code diagnostic tool.

You can diagnose, and clear, those pesky error codes once you’ve got them fixed.

With Bully Dog, increasing that torque and horsepower will be easy.

  • Four in one tool
  • The company offers great support on their products
  • Great for clearing error codes that won’t go once you’ve fixed the problem
  • The display is easy to read, colorful and bright
  • Great for Fords, Dodge Cummins, and GM trucks
  • Will not support deleted trucks

3. MADS Smarty Touch Programmer

This programmer is very easy to use, even beginners can get the hang of it in just a few uses.

It’s going to deliver your truck top marks in horsepower and fuel economy, and you will feel the improvement in your truck’s driving ability.

You will notice a throttle response increase, too.

This is also referred to as “torque management.” (Read More Here)

With this increase in linear power, you will feel and see the truck perform at a greater level under whatever driving conditions you throw at it.

Whether your truck is a daily driver, a workhorse, or used as a hobby, you are going to love how it feels.

This features a 4.3-inch touch screen display and performance programmer.

You can program your truck using Smarty tuning and keep watch over your parameters using the touch screen.

You get two devices in the package: Smarty Touch Controller and Smarty Touch Display, they come equipped with their own CPU.

The twin CPU design lets the Smarty Touch be the fastest and best at tuning (in our opinion).

It has just a four-second startup time and ECM updates take no more than 6 minutes.

You can pick from four different dashboards and they are all configurable.

  • Alarms will go off when your chosen parameters are too low or high
  • You can customize the background of the display
  • Features the fastest display startup in the entire industry at just four seconds
  • You can tune when the truck is running ComMod
  • Does not have a turbo timer
  • Some users stated they did not get instructions with their item

4. Edge Products Juice w/ Attitude CTS2

Last update on 2024-07-04 / Affiliate links / Images from Amazon Product Advertising API

This product really does have some serious attitude.

It unlocks the hidden power of your 6.7 diesel Cummins engine with ease.

This offers you 5 inches of high color resolution on the screen, and the interface is very intuitive.

It reprograms the truck at the drop of a hat and allows you to make fast changes to your power levels.

It just takes a few finger touches and you will immediately see better horsepower, torque, and performance.

If you loved the EDGE CTS products in the past, this device combines all the goodness of the older products but gives it a fresh new look.

The display is bigger but also very sleek.

You can customize the screen backgrounds, mix colors for your needles and gauge arcs, and easily see all your 6 7L Cummins engine data in real-time.

We also liked that this particular model came with an engine diagnostic tool also.

Check engine lights are a huge pain in the butt for truck lovers everywhere, so this tool is going to keep you alert about what needs to be fixed and what error codes your truck is throwing.

Add in another handy feature- the backup camera, and not only will you be at top levels for performance, but also your safety.

  • The screen is the biggest and most colorful we’ve seen
  • Update the product via the Internet
  • Can switch between Metric or Imperial measurements
  • One of the more expensive tuners we’ve come across
  • The product will not allow disabling or removal of factory emissions gear

5. Superchips Flashpaq

  • Brand New Superchips Flashpaq F5 In-Cab Tuner, HEMI Gasoline & 5.9L/6.7L Cummins Diesel, Compatible with 1998-2014 Dodge RAM & Chrysler Vehicles (Superchips Part #3845)
  • The Flashpaq covers HEMI gas trucks & 5.9L & 6.7L Cummins diesel engines. Whether you are driving a 5.7L HEMI truck, Chrysler 300C, or a Cummins diesel, this tuner is designed to deliver a quick, safe power that will bring instant impressive gains & features. Fitting in the palm of your hand, the Dodge/RAM Flashpaq plugs directly your car or truck diagnostic port & includes an intuitive menu structure to select a performance, tow, or economy tune.
  • All coverage, both gas diesel, is 50 state legal in the Flashpaq. This is a performance tuner that offers more bang for your buck than anything else on the market.
  • Features: Corrects speedometer for tire upgrades between 26-40" | Speedometer re-calibration for gear/axle swaps up to 5.38 | Transfer case gear low: 2.72-5.00 | Sway bar disconnect in 2HI (up to 25 MPH) | Daytime running light options | 1 touch lane change on/off | TPMS On/Off | TPMS Adjust | Fog light droput on/off | Daytime running light dropout on/off |
  • NOTE: Features may vary based on year, make & model | NOTE: 2011-14 Ram 5.7L 2500 & 3500 models are not supported by this product | NOTE: Does not support CAB & Chassis applications

Last update on 2024-07-04 / Affiliate links / Images from Amazon Product Advertising API

With its advanced tuning and setting, you will find this tuner to be suitable for your daily driver, towing vehicle, or enthusiast truck.

There are a few different power levels to choose from, tow, economy, and performance, so it will send power to whichever vehicle you’re running in just a few minutes.

In our research, it appears this is made for Chevy, GMC, and GM trucks; so do keep that in mind as you shop.

It has also been engineered to include Duramax models, including the 2016 LML.

This tuner fits easily into your hand, and you will find it’s a cinch to use, too.

The device also comes with a 2-year powertrain warranty, so get ready for a performance like you’ve never seen it before.

The features are pretty run of the mill, but awesome, nonetheless.

The screen is 2.8”, and the graphic interface is current and easy to use.

It offers you the chance to adjust speed and rev limiters, provides active fuel management control, and includes more memory with a faster processor that improves your tuning.

Like the other devices we have featured, this one also comes with that great diagnostic tool.

You can read and clear those trouble codes fast and easy.

  • Affordable tuner and easy to use and hold
  • Legal in all 50 states
  • Great for performance tuning for all purposes: daily driving, enthusiast driving, towing, etc
  • Installation time is short- one user did it in 20 minutes
  • Users noted customer support was not great

Our #1 Recommendation and Why?

For us, the EDGE 84030 was our number one pick and best tuner for Cummins 6 7l.

We chose this because it fits a variety of vehicles and comes in at an affordable price point.

To own and operate a diesel truck is no cheap venture, and for enthusiasts, it can get expensive fast.

This allows those who need it the chance to keep track of their performance without breaking the bank.

Certainly, there are more advanced and colorful models out there, but this gives you what you need without a huge financial setback.

Add in the fact that you can use it with other performance products, and it is a sure winner when it comes to value, quality, and style.

84030 Edge Insight - CS2
  • Multiple gauge screen layouts
  • One-touch easy menu navigation
  • Available for 1996 and newer vehicles equipped with an OBDII port

Last update on 2024-07-04 / Affiliate links / Images from Amazon Product Advertising API

FAQ About Cummins Tuners

best diesel tuner for 6.7 Cummins

Do Diesel Tuners Increase Miles Per Gallon?

The tuners boost torque and power, but the improved fuel mileage is what you will look forward to most.

You get more miles per gallon.

This is why such tuners are used in the care and maintenance of fleet vehicles, who are on the road often and need to maximize their fuel economy for profit’s sake.

Even saving a simple 8 cents per mile can add up over time, especially if your fleet runs over a half-million miles a month.

8 cents x 500,000 miles equals a whopping $40,000 a month, that could be somebody’s yearly salary!

Do Diesel Tuners Improve Acceleration and Speed?

If using a programmer, it is possible to boost your Cummins engine’s performance over 100 horsepower and provide 240 lb. feet of torque on a diesel truck, but that is dependent on the model.

Programmers get this performance by adjusting engine operating conditions in a manner that reflects better performance.

For example, they might add a bit more valve lift at higher RPM to provide max speed.

Do Diesel Tuners Lower Maintenance Costs?

In a way, yes.

You can read and clear diagnostic codes, which makes it easier for you to find out and fix the errors yourself instead of taking it to the dealership where they charge bundles of money to just look at the car.

Things to Consider Before Buying A Tuner For 6 7L.

Best Diesel Tuner For 6 7L Cummins

Will This Fit My Truck?

Many of these great tuners fit a variety of trucks.

You have to carefully read the description, and make sure it fits your particular make and model.

For example, our Smarty tuner that we featured here is a great product, but it is only suited for Dodge trucks of certain model years.

Many diesel lovers use Dodge, but not all of them.

So, carefully read before you buy anything to ensure less headache.

Why Am I Getting This?

Are you buying for performance for enthusiast or hobby purposes, or are you buying for work?

If you are buying for the hobby side of things, you may wish to opt for a tuner that allows you to make changes on the fly, like the Edge CTS2 model we featured.

Meanwhile, a lower-end tuner can still help you get the most for fuel economy at work, like the 84030 model by EDGE.


We appreciate your time today as we explored the best diesel tuner for 6.7 Cummins.

Choose your favorite tuner, go out there and smoke the competition.

You’re going to love what you get with these tuners, regardless of the one you pick.


Bear in mind that some of the links in this post are affiliate links and if you go through them to make a purchase I will earn a commission.

Keep in mind that I link these companies and their products because of their quality and not because of the commission I receive from your purchases.

The decision is yours, and whether or not you decide to buy something is completely up to you.

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