6.7 Cummins Upgrades That Won’t Void Warranty

Diesel engines have much better performance than other general gas engines. Many trucks and heavy-duty vehicles are equipped with diesel engines. Some of the best engines come from Cummins, and if you are a car enthusiast, you will know how reliable their engines are.

The 6.7 Cummins engine is one of the latest, recently upgraded versions of their other well-performing engines. However, if you own a 6.7, you will still want to increase its life and power. Doing this on your own can be risky, as it can nullify your dealership's warranty.

However, we have some quick solutions to this issue. Here are some 6.7 Cummins upgrades that won't void the warranty. 

6.7 Cummins Upgrades That Won’t Void Warranty

All these upgrades are easily available. They require some level of professional help but are otherwise highly user-friendly. These upgrades specifically aim to enhance your engine's power, mileage, and life. 

1. Turbo System

Benefit

Turbo systems are also referred to as turbochargers. These are parts of the engine that extract exhaust waste gases from your engine. They do so by compressing air into the cylinders, which also leads to the engine producing greater power. The benefit of using this system in your engine is that it will help your engine produce more power than it does in its factory form.

ATS | Aurora Plus 7500 Compound Turbo System (Source)

The same size and model of the engine will definitely produce more power than it did before. Consequently, more power means better mileage. This means you will see a significant cut in fuel costs. Furthermore, trucks and vehicles using such powerful engines often make lots of noise. However, with this upgrade, there will be less noisy operation, as the turbocharger will reduce the exhaust intake. 

Cost

A good, quality turbocharger can start from about $400 and go up quite high, depending upon the brand and the model of your engine. 

Ease of Installation

Turbochargers need to be positioned into the engine strategically. They can get very hot when operating and also need to be as close to the engine's exhaust as possible. This is because if there is a distance between the turbocharger and the exhaust, there will also be a delay in the exchange of gases, leading to poor performance. Turbochargers are best-installed by professional engine designers and sometimes they can even have a hard time understanding where to put the turbocharger. 

2. Bypass Kit

Benefit

Engines have fuel pumps that can be highly costly if they break in an accident. To ensure that you do not have to go through something like that, bypass kits are a great upgrade. These kits cannot stop the fuel pumps from getting damaged, but they function in such a manner as to help reduce damage and save on costs.

Bypass kits pass the debris and filtrates from the fuel back to the pump and stop the dirt from getting into expensive parts like the injectors. Other than that, bypass kits can also improve engine life, as they improve the fuel quality and flow, as well. 

Cost

A good bypass filter should not cost you more than $150. It may also come with a few oil samples included at this price. Plus, you can save your fuel costs up to $300. 

Ease of Installation

These upgrades take about 1-2 hours of time to be installed. They also require little professional help, which means you don't have to spend extra on installation. 

3. Cold Air Intake Filters

Benefit

The most relied upon upgrade of 6.7 Cummins are cold air intake filters. These filters are known for showing effective improvements in horsepower of your engine. These filters work by bringing in more cold, dense air to burn and generate power. Because of the dense air, more power is generated, increasing engine power and fuel mileage, as well.

Cold air intake filters also increase the car's responsiveness to your commands, such as when pressing the accelerator pedal. The kind of speed you want from your engine is reached faster with more power. The best and most important advantage of choosing a cold air intake filter over a stock filter is that they need replacing after 30,000 to 40,000 miles. This reduces replacement and maintenance costs. 

Cost

You will find these filters cost from about $50 and up to $1000, as well. The choice is yours, while also depending on and changing based upon the manufacturer, the engine model and make, and features. However, a mid-range filter in the price range of $300 or $400 should be sufficient. 

Ease of Installation

Cold air intakes are not the most difficult upgrades to install yourself if you have basic knowledge about the engine. You only need to be really careful about the sensors that might need to be taken off with the battery. Make sure these sensors are secured properly and are put back in the right place later on. These are easy and quick to install and can take a maximum of about two hours. 

4. DPF Delete

Benefit

If you are also wondering why the 6.7, the most recent version of the Cummins engine does not give good mileage, it's because of a part called DPF. DPF stands for diesel particulate filter. The filter is the most damaging thing in terms of fuel mileage. Therefore, deleting or removing this part can bring noticeable benefits to your engine's power and performance.

These filters can easily become clogged and blocked by the debris and soot. Their functionality is almost detrimental and comes with added disadvantages. Therefore, to remove these, you can easily find DPF delete kits on the market that ensure you never have to worry about your engine's mileage and life again. 

Cost

Truth be told, DPF delete might seem like a convincing upgrade, but it comes with a heavy price tag. Typically, a DPF delete process can cost you somewhere between $2000 and $4000 with the added expense of professional installation. 

Ease of Installation

DPF delete kits cannot be installed without professional assistance. They need to be done carefully, as you can damage other parts of the engine when programming the removal of the DPF. 

5. Nitrous Oxide Injectors

Benefit

Injectables, such as nitrogen oxide injectors can be used to upgrade all types of Cummins vehicles. Nitrous oxide injectors work by directly injecting nitrogen and oxygen gas into the exhaust, leading to a much cooler temperature of the engine. Because they decrease the exhaust distance and use much denser air, the engine and your car become more responsiveness and gain power.

These are known for increasing the life of the engine, as well as maintaining heat temperatures. You will come across a number of people telling you that nitrous oxide injectors ruin engines, but in reality, diesel engines need these upgrades. If you use the right-sized kit, then there will be no harm to your engine. However, nitrous oxide injectors are not recommended for gas engines. 

Cost

These injector kits should not cost more than $200 to $700. 

Ease of installation

Installing these injectors is not an easy task. They might not require a lot of time, but they surely need professional assistance. There are many factors you need to take care of, such as clamps, positioning, solenoids, and so on. Nitrous plates and other parts need drilling as well, which can require expertise and prior experience. 

6. Nerf Bars

Benefit

If you own a truck, then Nerf bars can be imperative. These can be more of a necessity than an accessory or optional upgrade. Nerf bars go on the bottom of your truck doors and act as steps or support for your feet when you climb into the truck. The biggest advantage of this kind of upgrade is for people who have kids who travel in the truck.

This makes the truck appropriate for all kinds of occasions and people as it's easy to hop in. These can also act as side protection when your truck is off-roading. These bars will prove to be highly advantageous in extreme weather conditions. When driving in floods or when it is snowing, these bars can provide great support for you. You will find a wide range of these that come with rubber padding, which further gives great grip and holds much better. 

Cost

Nerf bars can cost as little as $80 to as high as $800. This hugely depends on the material you choose, the range of extra features, brand name, and car make/model. 

Ease of Installation

Installing Nerf bars should not require any professional help. These are very easy to install and usually come with all the necessary hardware. Most cars also come with mounting holes in place, but if your car does not have them, then you might need to drill some holes. Installing these should not take more than one-hour or a maximum of two hours of your time. 

7. Spray-on Bed Liner

Benefit

Truck bed liners are important for waterproofing and weather-proofing your truck's bed. It's considered to be an essential upgrade for trucks. Therefore, we think spray-on bed liners are the best, most convenient options. These types of bed liners free you from the worry of getting the wrong size of a carpeted bed liner.

These are very easy and quick to apply. Spray-on bed liners are the best option if you want to keep your truck's exterior looking as good as new. Moreover, they don't move out of their position when the truck experiences jerking and jarring motions. Therefore, this upgrade will not only improve the longevity of your truck and its appearance but will also give you peace of mind.

Cost

A standard spray-on bed liner should cost you about $400 to $550. But you will also find some higher-end, extra special bed liners that can cost as much as $1000. 

Ease of Installation

Some spray-on bed liners might require professional installation, but it is also possible to spray them on all by yourself. You can go through a number of YouTube tutorials and even contact the manufacturer of the spray to understand how do it by yourself. If you are not savvy with car technicalities, we recommended hiring a professional to do it. If you are spraying it on, always remember to use eye protection and a mask. 

8. Tires

Benefits

A 6.7 Cummins comes with decent tires itself, so why should we upgrade them? Tires impact everything. They impact the speed of your car, the power of your engine, the responsiveness of your car, and the drive smoothness. These play a significant role in the overall experience of driving a truck.

Smaller wheels are noisier, while larger wheels are a lot sturdier and speedier. Going over bumps and potholes, the impact you feel is determined by the quality and size of your wheels. Therefore, we recommend switching to one size larger wheels if you want a better, smoother driving experience. 

Cost

The cost of your tires will increase as you up the size. The brand is another factor that increases or decreases the price. In general, you will find an all-season tire for a truck costing for about $150 to $350. You can find more expensive ones as well if you want to choose a higher-end brand. Cheaper tires are also available that can cost as little as $45. 

Ease of installation

If you have owned a car or truck before, installing new tires should be a piece of cake. The only difficult part is screwing down the bolts, which requires lots of energy and strength. Installing new tires should not take more than two hours. However, you will need proper hardware, such as the valve system, and a jack.

Conclusion

Whether you are changing your tires or are upgrading to a bypass fuel flow system, there are some key things that you always need to keep in mind. Make sure that any upgrade you are using is fully compatible, legal, and safe to use in your car. Moreover, you need to know that your dealership cannot possibly void the warranty unless the upgrade you have made damages the car.

They will need to prove that the upgrade made by you is the reason behind any kind of damage in order to void the warranty. Therefore, you should go ahead and make any upgrade you want as long as it's legal and safe for you and your car. Your engine needs maintenance and extra care to last you a long time with excellent, quality performance. We always recommend consultation with an expert before buying an upgrade.  

If you are looking for am upgrade that provides a ton of benefit but might void your warranty we would suggest looking into getting a tuner. You can read our 6.7 Cummins Tuners Buyer Guide here if that is of interest to you.