6 Best 6.7 Cummins Upgrades Increase The performances! (+Reviews)

Dodge released the first 6.7L Cummins engine in mid-2007. Initially, the 6.7liter engine block could offer up to 350 horsepower and 610 to 650lb-ft torque. Over the years, the first block has evolved a lot. Now the Ram Cummins 3500 offers 420 horsepower and 1,075lb-ft torque.

While the 6.7L Cummins is a superior engine, some drivers do performance upgrades to unlock more of its power. Others add bolt-on performance upgrades to enhance towing capacity and fuel efficiency.

Below we have discussed some of the Best 6.7 Cummins Upgrades you can attempt at home. They are affordable and easy to do.

What Are The Best 6.7 Cummins Upgrades?

Our Top 6.7 Cummins upgrades include the following:

  • Turbo
  • Performance programmer/Tuners
  • Fuel Filter
  • Radiator
  • Cold Air Intake
  • Exhaust System.

Other Performance Upgrades

  • Fuel pump
  • Intercooler
  • Lift pump
  • Head studs
  • Horn
  • Dual disc clutch

We have listed the best six performance modifications you can do to enhance your 6.7liter cummins engine. Below, we will review actual products you can select from Amazon.

01. Best 6.7 Cummins Turbo Upgrade

How does it work and increase performance?

An engine burns fuel faster if adequate air reaches the combustion chamber. Since a turbo has a turbine that absorbs and forces the air into the engine, it is the upgrade you need for more power.

One of the best turbo replacements for the 6.7L Cummin is the Koomaha R8048234AG. You might want to investigate this product further if you have a Dodge Ram 2500, 3500, or a Cummins Diesel VGT 6.7L Holset made from 2007 to 2012.

You could also choose it for the Ram 4500 or 5500 6.7L L6 Diesel model for 2008 to 2012.

An OEM turbo, the Koomaha is a quality product that will work in tandem with other engine components.

Weighing 41.8 pounds and measuring 14.57 by 12.99 by 10.63 inches, Koomaha R8048234AG works perfectly after installation.

Installing the OEM part at home may be hard for anyone without the actuator calibration tool.

Outcome performance benefits

In addition to more power, a turbo like the Koomaha R8048234AG can provide the following performance benefits.

  • Produces free power because it does not suck up engine power. Instead, a turbo draws power from the engine’s hot gases.
  • A turbo can help the 6.7L engine perform better at higher altitudes as it compels more air into the combustion chamber with its whirling turbines.
  • May improve the fuel consumption rate of your vehicle.

Q/A: Can a turbo get very hot? 

A turbo becomes hot because it draws its running power from hot engine fumes. While a turbo can get red hot under certain engine conditions, it seldom does. If you overwork the truck by hauling a heavy load, the turbo might get hot as the engine temperature rises.

Q/A: What is a turbo lag? 

If you push down the throttle to get power from the engine, you might not get it at once. Thus, a turbo lag is the time difference between when you activate the throttle and when the engine responds.

As the turbo turbine requires time to start rotating at a maximum speed, the delay must happen. Shifting to a lower gear might help, but you could still notice the lag.

02. Best 6.7 Cummins Performance Tuners Upgrades

How does it work and increase performance?

If you need your truck to have more off-roading and towing power and remain reliable for daily driving, check the Pedal Commander PC31-BT. Weighing nine ounces, the black surface-mounted Pedal commander throttle controller has many capabilities.

First, it ensures that your electronic gas pedal responds fast, raising your Dodge Ram’s acceleration. Offering thirty-six adjustable settings, the Pedal Commander PC31-BT can fine-tune the truck with four different modes.

They include Sport+, Sport, City, and Eco. Every mode comes with nine settings. For fuel economy, use the Eco mode to get twenty percent mpg. As for installation, the Pedal Commander PC31-BT is a plug-and-use device.

According to the manufacturer, you can finish the task in six minutes and drive away at a faster speed. You also get a free Pedal Commander app with Bluetooth connectivity to help you control the tuner on your phone.

Unlike other accessories, the Pedal Commander will not lead to the cancellation of your warranty. Even if the manufacturer checks the ECU, they will not trace this car tuner.

Apart from a Dodge Ram with 3.0L, 3.6L, 5.7L, 6.4L, or 6.7L engine, the PC31-BT throttle response controller can tune a Mitsubishi, Chrysler, Maserati, or Jeep.

All Dodge Ram trucks made from 2007 to 2018 can use this accessory except for the 2011 to 2012 HO. Hence, this Pedal commander will be ideal for Gas and Diesel Dodge Ram 1500, 2500, and 3500.

Performance benefits you should expect are: 

  • No more throttle lag – As your truck gets its control commands from the computer, it does not accelerate faster than an older vehicle using the mechanical throttle cables. Once you install this performance modification, you will eliminate delayed responses from the gas pedal.
  • Compatibility with OEM engine parts – If you have aftermarket tunes, the Pedal Commander should still tune the electronic gas pedal. As it lacks the OBDII port, the accessory does not interfere with other installed performance tuners.
  • Improved engine efficiency – A high-quality tune may adjust various engine parts at once. Using modes with different settings, a tuner can unlock more towing strength, engine power, and fuel savings. Additionally, it can help manifest the benefits of other performance upgrades.
  • Better performance plus safety – A plug and Play device like the Pedal Commander unlocks the performance potential of your truck without making you unsafe. As you can turn it ON or OFF, it cannot tamper with the OEM safety measures.

Q/A: Can a person make a mistake when installing a 6.7 Cummins Tune? 

Before you rush to claim that a given tune does not work, make sure you did the installation correctly. Some tuners require an update before they begin tuning. If you miss this step, your tuner will not have the latest updates. Some people forget to plug in every connector and component.

Others will connect all parts but do some of them wrongly. Cable connectors need to fit in correctly and smoothly to avoid breakage. As for Zip-tied cables, they need not hang where you can accidentally cut them.

Q/A: What should I consider before buying a tuning device? 

First, you need to create a goal or target. Do you want to boost engine power and torque or are you looking for better fuel efficiency? Next, you must focus on your safety first. Will the new tune let you accelerate, decelerate, and turn safely?

Increasing performance and safety at once means doing a couple of affordable upgrades. One upgrade may raise engine power but ruin the braking or suspension system. Also, consider factors like pricing, ease of use, and the actual performance reflected in user reviews.

 03. Best 6.7 Cummins Fuel Filter Upgrade

How does it work and increase performance?

A clean fuel filter reduces engine damage and protects other fuel delivery parts. A Mopar replacement filter can catch ninety-eight percent of water pollutants. As a result, it can ensure a stable flow of clean and moisture-free diesel fuel.

Mopar produces premium quality performance upgrade accessories. With its high-grade filter medium, this Mopar fuel filter guarantees maximum filtration and increased fuel flow.

A thoroughly tested fuel filter, the Mopar 68065608AB.1 is a multi-layered filter with premium sealing parts to prevent fuel leakage. Also, its anticaustic housing boosts its durability.

Installing this fuel filter upgrade will be easy work. Before getting this OEM factory fuel filter for your 6.7 Cummins diesel engine, check the compatibility chart.

Choose Mopar filter for Dodge Ram 2500 or a 3500, 4500, or 5500 cab chassis model made from 2010 to 2012.

Some users used it on vehicles made after 2012 successfully. However, you need to consult the manufacturer before doing something like that.

Outcome expected benefits

For the engine to burn fuel effectively, it needs plenty of air. If it burns contaminated fuel, it will not provide the anticipated benefits. Thus, a new fuel filter for Dodge Ram 6.7 Cummin can offer these benefits:

  • Thorough fuel filtration
  • Tight seals to prevent fuel leakage
  • Clean diesel fuel for increased engine performance and power
  • Stable flow of fuel all the times
  • Reduces engine failure.

Q/A: How long does a fuel filter last? 

A high-quality fuel filter should provide at least 30,000miles of usage. In short, you need to change it every two years if you drive on clean roads. If your filter traps a lot of dust from driving on unpaved roads, change it earlier.

Q/A: What can a clogged-up fuel filter do? 

A dirty filter can affect engine performance severely. Thus, the engine may misfire or hesitate when towing or doing an activity that overworks the engine.

04. 6.7 Cummins Radiator Upgrade:Best Coolant System

How does it work and increase performance?

People use their trucks differently. How you use yours matters less when buying the Mishimoto MMRAD-RAM-03 radiator. A Mishimoto radiator model fits towing, off-roading, daily driving, and much more.

Suitable for Dodge Ram 6.7L and 5.9L trucks made from 2003 to 2009, the Mishimoto MMRAD-RAM-03 can prevent engine overheating. Also, it has a 1.34-inch core thickness, 0.08-inch tank wall thickness, and 1.97-inch inlet and outlet diameter.

A TIG-welded aluminum radiator is a direct fit for Dodge Rams. Due to a high cooling capacity, the Mishimoto radiator can keep your engine temperatures down better than the stock component.

Like other Mishimoto radiators, this component features a brazed aluminum core that creates clean joints with minimal distortion.

A TIG-welded end tank offers longevity while the magnetic drain plug traps metal shreds before contaminating the coolant. Moreover, the Mishimoto MMRAD-RAM-03 radiator comes with a high-pressure cap for raising the boiling point of the engine coolant.

Outcome performance benefits

Choosing the Mishimoto radiator as your top performance upgrade is very beneficial. Besides cooling the engine, the new radiator can offer these benefits:

  • Can function better than a stock radiator
  • Boost engine functions by improving its cooling capacity
  • Prevent the side effects of overheating
  • An aluminized radiator is lightweight and ideal for boosting car speed and efficiency
  • An aluminum radiator does not rust.

Q/A: Should my radiator be making these noises? 

No, a properly-fit radiator should not be noisy. However, if the materials within it heat up, they may expand and sound. Poor installation jobs can trigger noise from the radiator and other parts.

Q/A: Why is my radiator leaking? 

A radiator may leak sometimes, but the problem is easy to solve. Close both valves to separate the leak. Then, allow the air to exit to reduce the pressure within the radiator. If the leak continues, take the car to a mechanic.

05. Cummins 6.7 cold air intake upgrade:Best Cummins Air Intake System

How does it work and increase performance?

Even if your Cummins diesel engine already has an advanced cold air intake system, you can replace it. An aftermarket part will not void your warranty and might offer better performance than the stock one.

S&B Filters is a reputable manufacturer offering high-quality oiled and cotton cleanable filters.

We recommend the S&B Filters 75-5068 model for your 6.7L Cummins engine. As a new cold air intake unit with a silicon filter, the 75-5068 is super efficient.

Boasting 99.55% efficiency, this filter can provide 54.6 percent more airflow. After installing the filter, you will largely reduce the check engine light problem.

Also, silicone components offer longevity and aesthetics. Concerning quality, this product meets the ISO 5011 standard and can sell internationally.

S & B Filters apply 72g of oil to this filter before shipping. Keep in mind that this filter fits Dodge Ram 2500 and 3500 6.7 Cummins made between 2013 and 2018.

Installation is straightforward and most users were happy with the sound improvement the filter triggered. At zero to fifty mph, some users noticed better throttle response.

Outcome performance benefits

A new cold air intake filter upgrade can offer the following benefits:

  • More torque and power– Although the gains might be small, they are better than none. Usually, a new intake will offer five to ten horsepower gains and twenty to thirty lb-ft of torque.
  • Better airflow – Similar to a turbo, a cold air intake and filter increase the amount of oxygen reaching the engine’s combustion chamber.
  • Enhances turbo performance –Adding a new turbo is good but it will function more efficiently if you also add a cold air intake filter.
  • Boasts gas mileage – An ICU will not give a high gas mileage boost. However, even a little boost can let you save some money.
  • Better sound – An S&B Filters ICU filter can boost the sound of your truck and make the turbo louder.

Q/A: Should I add just the filter or the whole ICU unit?

Adding a performance cold air intake filter to your 6.7 engine is a bonus. Nevertheless, get the entire cold air intake instead of just the S&B filter if you have the money. A whole system will raise the airflow by around fifty percent while a filter will only give a ten percent raise.

Q/A: What type of cold air intakes exists? 

You can either buy a closed or an open-air intake system. If you want a high power boost, the open ICU is better off because it has no restrictive airbox. On the other hand, a closed ICU is within a box to keep from hot engine fumes.

06. Best 6.7 Cummins Exhaust System Upgrade

How it works and increase performance

After installing a turbo and a cold air intake, you will achieve maximum airflow into the motor. However, a damaged exhaust system can restrict airflow. You need a reliable exhaust system upgrade like the Upower XS2772.

A four-inch diesel exhaust muffler, the Upower XS2772 is thirty inches long. Moreover, it has a straight-through design and offers a weld-on resonator.

Made from stainless steel and fiberglass material, this muffler is functional and durable. In particular, the Continuous Roving Fiberglass material helps to absorb unnecessary resonance.

As it is a universal exhaust accessory, it can fit your Dodge Ram and other vehicle makes and models. Additionally, the UPower muffler will best suit a truck without a PDF and other emissions equipment.

For instance, it can suit a Dodge Ram model made from 2007 to 2010. Boasting a 7-inch circular body, this exhaust muffler has a four-inch inlet and outlet ends.

Outcome performance benefits

After a successful installation of the Upower XS2772 exhaust, expect to see these performance benefits:

  • Improved sound quality – Upower muffler creates the deep throaty sound most drivers cannot resist.
  • Durability – A weld-on stainless steel & fiberglass exhaust muffler has robust bonds and joints that can last longer.
  • Improved airflow – A straight-thorough exhaust provides a direct flow path for the air. 
  • Reduces backpressure – If you add airflow and power boost components, the exhaust backpressure will increase. After installing a 4 to 5-inch exhaust, it will eliminate turbo stress and boost its efficiency.

Q/A: How can I improve exhaust airflow in a newer 6.7 Cummins? 

If you have a 2012 or a newer 6.7L Cummins, use a downpipe to boost its airflow. A downpipe can reduce the backpressure as it attaches to the turbo directly.

Q/A: What is a DPF back exhaust? 

Some diesel trucks have a diesel particulate Filter (DPF) for removing soot from the exhaust. A diesel engine produces more soot and pollutes the environment more than gas engines. If your vehicle has no DPF back exhaust, you can install one.