Even the newest and most powerful 6.7 Cummins engines can be fine-tuned and recalibrated until they run at their most efficient and powerful.
This can be done by a professional, at a cost.
Buying a tuner for home use can not only save you garage expenses, but it will also make your truck run more economically than ever before, while still gaining torque and power.
Take a look through our Best Diesel Tuner for 6.7 Cummins review to find out exactly which tool suits your needs and to make the most informed buying decision.
Comparison Table of 5 Best Diesel Tuner for 6.7 Cummins
|Edge Products 85400 CTS2 Diesel Evolution Programmer||Edge Products||Check Now|
|Superchips 3845 Flashpaq F5 Tuner||Superchips||Check Now|
|Bully Dog 40420 - Diesel Diagnostic and Performance Tuner||Bully Dog||Check Now|
|RaceME ULTRA DPF Delete Programmer 07.5-16 Dodge Cummins 6.7L||Raceme||Check Now|
|MADS Smarty Touch Programmer S2G||Mads Electronics||Check Now|
If you regularly tow a vehicle and find your engine lacks enough horsepower and torque, then this is suited to you.
This tuner looks impressive with its sleek design and large LCD touch screen. Installation is very simple and takes a matter of minutes, plug it into the OBD port and away you go.
This tool is capable of many things; it can diagnose trouble codes form the engine warning light, it can record 20 minutes of live engine data, and run many performance tests to file and compare at a later date.
The main screen is clear and simple with up to 9 parameters being displayed at any 1 time. These include mpg and mph, engine coolant and transmission fluid temperature and battery voltage.
The menu screen has dozens of parameters to learn and set. Our favorite is the Mileage Coach. This tracks your miles per gallon and overtime teaches you the correct settings and driving patterns to achieve maximum fuel efficiency.
It can tune and monitor shift points, firmness, fuel pressure, and has full torque management, along with a myriad of other tasks.
There are 4 pre-programmed performance settings;
- Transmission Only. Enables the regular transmission settings to perform at their best, possibly extending the transmission’s service life.
- Towing. Gives your truck instant power right when you need it most.
- Performance. When you need that extra boost of torque and power, hit this setting and know that the handling and driveability of your vehicle will not be affected.
- Extreme. An adjustment in the fuel injectors will give the vehicle its highest possible performance.
This is an excellent tuner that maximizes performance and lengthens the life of an engine, a must-have for any 6.7 Cummins owner.
If you’re looking to improve the horsepower of your truck, maybe increase the torque and get better fuel efficiency without spending the earth, take a look.
This device looks different from all of our previous reviews as it is handheld and all of the information is displayed on a smaller screen.
Instead of a touch screen, there is a dial with 5 buttons that are very simple to operate.
Installation is just the matter of plugging the cable into the OBD2 port and waiting for the tool to load and save your stock settings. This is particularly useful if for some reason you ever want to restore factory settings.
The screen walks you through each step, offering you a particular tune or performance enhancer that you need to either click yes to accept or no to decline.
Within a few minutes of unpackaging your tuner, you could be getting increased mpg from your truck. By activating the mileage save tune the ECU immediately begins work on adjusting parameters to save your fuel.
Scrolling from one option to the next is quick and simple, custom tuning each parameter to your personalized style takes moments.
Up to 150 hp is achievable, driveability and reliability can be improved, and unnecessary downshifting is eliminated.
This is more than just a diesel tuner; Bully Dog has designed a tool with 4 preloaded features.
- Engine Tuner – 10 tunes to choose from, each help to personalize your exact power needs
- Monitor – 15 performance parameters are displayed clearly on the screen. From here you can keep updated on all of the engine’s necessary data.
- Gauge – allows the user to read and replace any of the A-Pilar gauges
- Diagnostic – Read and clear any engine trouble codes, including abs lights.
The monitor itself is small enough to be mounted on the dash or window without causing distraction, while the LCD screen is clear enough to read every detail. It is even supplied with a mount.
Operation is simple; you are guided through each process. Some of the operations can even be performed as you’re on the go.
What to expect
GT device, OBD2 adaptor plug, windshield mount, and Quick Start-Up Guide.
SD card and card reader, mini USB cable, fuse tap and spade.
You may think that your 6.7 Cummins already has huge power potential, but try installing this tool and you will notice the difference. Much greater pull when towing, increased power and best of all, most users notice an improvement of at least 3 extra miles to the gallon, round town and over distance.
So you’re looking to use your truck off-road and race it? If so, you will be looking for the tuner that provides the maximum tunes, fixes, and adaptations that you can make.
If you need a DPF delete then this programmer can do it, just remember not to attempt any tunes until the DPF is deactivated.
It is also able to disable the DEF, diesel exhaust fluid, system and the entire EGR without having to remove any hardware.
We love that you can make real-time changes by just hitting send as you’re on the fly. Feel the response immediately as you soup up the torque and power.
This tuner has a million and 1 capabilities, it can read and clear error codes, calibrate your speedometer if you’re using non-stock tires, and it can do an entire transmission tune.
You can adjust the duration, timings, VGT, and tire pressure parameters.
There are no complicated procedures you need to follow during installation, simply run the latest update, plug it into the OBD2 port and within 7-minutes you could have completed your first tune.
Each transfer is fast, the fastest available on the market at the moment.
The touch-screen functionality is perfect, and reading all data is a breeze with the large, high-resolution screen.
If you’re looking to give your truck a power boost of up to 200hp, then this tool must be worthy of some serious consideration.
If your truck feels a little drowsy and feels like it needs a wakeup call this programmer could be just the one for you.
It comes with a full Catcher software package that includes 10 power levels to spool up the turbo levels quickly and efficiently. It provides great throttle response with every adjustment, from 1 through 10.
Level one supplies an extra 30 HP whilst level 10 adds a whopping 210 HP. It’s safe to say that your truck may need to be modified, particularly the transmission, to handle that extra power.
What to expect
Smarty Touch Display and Smarty Touch Controller, each with its own CPU
OBD2 adaptor cable, windshield mount, and instruction manual.
The monitor is 4.3-inches of high-resolution, touch-screen display. Even in bright sunlight or dull conditions, the screen is readable. The touch screen facility is great when you're motoring to slightly increase or decrease the power, depending on the terrain.
Using the mount supplied enables you to monitor all of the parameters that you have set. Should the levels exceed or drop below desired settings, then an audible beep or an on-screen text will immediately alert you.
All of the other adjustments need to be completed with the engine off but only take a few minutes to adjust from one feature to the next.
This is the fastest display and tuner available at the moment. With a 4-second start-up time, your 6.7 Cummins pickup could be performing beyond anything you had previously expected, while also giving you greater fuel economy.
What is a Diesel Tuner?
Often called programmers or chips, a diesel tuner is a small electronic device that plugs into a vehicle's OBD2 (On-Board Diagnostic) port to allow the user to recalibrate the engine’s computer.
Adjustments can be made to factory settings resulting in increased torque, improved power and therefore, greater fuel efficiency.
They are simple to install easy to operate and can make a marked improvement in the performance of your vehicle.
Some tuners are simple programmers, whilst others are multi-functional and perform other tasks including diagnostics and correction.
Most have large screens that, once plugged into the vehicles OBD2 port, sit in the cab and feed live data of the engine’s performance.
The user can use this data to enhance or reduce the power levels and torque going to the engine.
Our product reviews will outline each machine’s capabilities.
What is a 6.7 Cummins?
It is an engine and a big and powerful engine at that. The 6.7 refers to the size, 6.7 liters.
Found on RAM 2500 and 3500 pickup trucks, they produce 400 hp of raw power, and that's before any fine-tuning to the engine.
- Power – 370 – 400 hp
- Torque - 850 – 1000 pounds per foot
- CGI Block - Compacted Graphite Iron block that increases cylinder pressure whilst reducing the overall weight.
- Turbocharged - With heavy-duty bearings that pump 33 psi (pounds per square inch) of fresh air into the engine.
- Crankshaft - Made from the highest strength yet alloy, supplying increased power.
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Cummins is a 100-year old company that has been creating powerful engines for almost 30-years. They began with an impressive 5.9L and have since moved on to the 6.7L.
It has a 31,000-lbs capacity which makes it perfect for towing.
It is fitted with a 6-speed Aisin auto-transmission is economical on fuel.
Designed to need an oil-change just once every 15,000 miles, it is a strong and powerful beast on which its owners can rely.
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What is a DPF?
DPF, Diesel Particulate Filter is found in a vehicle's exhaust system and does exactly what you'd think. It filters out particles to prevent damage to the engine.
These particles are mainly made up of soot and once filtered they store in a compartment until it’s full.
The vehicle will then run a regeneration cycle and use fuel to burn it off.
As you can imagine, it is during this cycle that fuel economy decreases.
Clogged DPF’s occur when the regeneration cycle fails or there is so much soot being produced that the filter simply cannot handle it.
When this happens the vehicle will need a deep clean. Not only is this expensive, but it can also leave the vehicle off the road for days.
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Using a tuner can remove the DPF and reprogram the vehicle’s on-board computer to work without it. This is usually done by users wanting to off-road and races their trucks.
The exhaust itself replaces the actual filter and the tuner disables the regeneration mode whilst preventing other trouble codes from happening.
Without the DPF the user will notice an increase in both power and fuel efficiency. Often a very large increase!
The vehicle could also have a greater life expectancy, months, if not years longer.
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There are many abbreviations used when discussing engine tuners and deprogrammers, here are a few of them and their definitions.
HP: Horse Power, a unit of measurement or power. In vehicles, it means speed, do you want to go faster? Add more hp.
Torque: Turning power, measured in feet and inches. Greater torque adds greater power to accelerate.
Psi: It is a way of measuring pressure and stands for Pound(force) per square inch.
PID: Proportional Integral Derivative. It is a mechanism to achieve feedback and monitor results from a vehicle’s engine.
CPU: Central Processing Unit. It is the chip in the heart of the on-board computer that allows basic instructions to be carried out.
BHP: Break Horsepower is the measure of engine horsepower before any loss in power occurs from the gearbox, alternator or other auxiliary components.
ECM Update: Engine control Module that ensures your vehicle operates at optimal performance levels. It monitors and regulates the fuel mixture and the emission system.
TPMS: Tire Pressure Monitoring System allows the user to always be aware of real-time tire-pressure information
VGT: Variable-geometry Turbochargers designed to allow the ratio to change as conditions do.
Rail Pressure: is another name for fuel pressure. A sensor, which is part of the vehicle’s fuel system, is used to monitor this pressure at the fuel rail.
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Will this tuner fit my vehicle?
Easily the most often asked question!
Each tuner will benefit several different engines in many different vehicles.
To make sure that the tuner you choose is compatible with your truck, follow the link to a dropdown menu. Enter a few details and the answer will appear.
Failing that, the company’s website will be able to advise you.
What is an EGT probe?
It is a sensor that is used to monitor and measure the Exhaust Gas Temperature.
It doesn’t need an electricity supply as it relies on a thermo-coupler for its power.
They take around 30-minutes to fit to the exhaust system and when paired with a tuner, give you live readouts of exhaust temperatures and emissions.
Tuners are rarely supplied with an EGT probe but they are available as an add-on.
Which is the best tuner for 6.7 Cummins dpf delete?
Not all tuners are capable of performing this action, check before you purchase.
Few diesel tuners will make any adjustments to the emissions system.
Race tuners are more suited to this purpose. We suggest that the RaceME Ultra Programmer might be what you’re looking for.
How can I improve my diesel engine’s performance?
- Keep on top of it and replace and upgrade any failing components regularly.
- Use the best quality diesel at all times.
- Use a programmer to tweak and fine-tune all of the settings to personalize your truck and to boost it to its optimum capabilities.
What is the difference between an engine tuner and a programmer?
They are the same thing, just with different names. You might occasionally hear them called an "engine chip" too.
If you have already invested in a pickup with a Cummins engine then you will already now that you have a beast beneath the hood. They are bigger and more powerful than any of the previous engines Cummins have designed, and have good towing capabilities.
By reading our diesel tuner for 6.7 Cummins review, you have hopefully decided to make your truck even MORE powerful, MORE fuel-efficient, and with SUPERB towing capabilities.