How Much Does it Cost to Delete a 6.7 Cummins – Guides 2023

The 6.7 Cummins engine has been a popular choice among diesel truck enthusiasts for years, offering impressive power and reliability. However, with the introduction of stringent emission control regulations, many owners are now considering a “delete” to maximize performance and fuel efficiency. 

Deleting a diesel engine involves removing certain emission control systems, such as the Exhaust Gas Recirculation (EGR), Diesel Particulate Filter (DPF), and Diesel Exhaust Fluid (DEF) systems. 

While this process can lead to notable performance improvements, it’s essential to understand the costs, benefits, and potential risks involved. 

In this comprehensive guide, we will delve into the expenses associated with deleting a 6.7 Cummins, as well as explore the legal, environmental, and performance aspects of this modification.

How to Budget for the Cost of Deleting a 6.7 Cummins Engine

When planning to delete a 6.7 Cummins engine, it’s essential to create a budget that accounts for all the expenses involved. To ensure you’re financially prepared for this modification, consider the following steps:

  1. Research the components and delete kits: Begin by researching the various delete kits available for the 6.7 Cummins engine, which typically include EGR, DPF, and DEF delete components. Prices can vary significantly depending on the brand and quality, so explore your options and make a note of the costs associated with each kit.
  1. Account for labor costs: If you’re not planning to perform the delete yourself, you’ll need to factor in professional installation fees. Contact local diesel mechanics or performance shops to get an estimate of their labor costs for a 6.7 Cummins deletes. Keep in mind that prices may vary based on the complexity of the job and the shop’s hourly rates.
  1. Consider DIY deletion expenses: If you decide to perform the delete yourself, you’ll need to budget for tools and resources. This may include purchasing or renting specialized tools, investing in an engine tuner, and acquiring reference materials such as online tutorials or repair manuals.
  1. Plan for additional expenses: In some cases, you may need to upgrade or replace other components of your vehicle to accommodate the increased performance following a delete. These additional expenses can include upgrading the turbocharger, fuel system, or transmission components. Make sure to research and budget for any necessary upgrades.
  1. Calculate the total cost: Add up the costs of the delete kit, labor (if applicable), DIY tools and resources, and any additional components to determine your overall budget for the project.
  1. Evaluate potential long-term savings: While the initial costs of a 6.7 Cummins delete can be significant, it’s essential to consider the potential long-term savings. Improved fuel efficiency and reduced maintenance expenses can help offset the initial investment over time. Calculate the potential return on investment to determine if the deletion is a financially viable option for you.
  1. Assess the risks and drawbacks: Before moving forward with a 6.7 Cummins delete, weigh the potential risks and drawbacks, such as voiding your warranty, legal ramifications, and environmental impact. Ensure that you’re prepared to accept these risks and that the benefits of the deletion outweigh the potential consequences.

By following these steps and creating a well-researched budget, you can effectively plan for the costs associated with deleting a 6.7 Cummins engine and make an informed decision about whether this modification is right for you.

Reasons for Deleting a 6.7 Cummins Engine

There are several reasons why truck owners might choose to delete the emission control systems of their 6.7 Cummins engine. Some of the primary motivations include:

Improved performance: 

Deleting the EGR, DPF, and DEF systems can lead to noticeable gains in horsepower and torque. These performance improvements are often the most attractive aspect of deleting a 6.7 Cummins engine, as they can enhance the overall driving experience and the vehicle’s towing and hauling capabilities.

Increased fuel efficiency: 

Removing the emission control systems can result in better fuel economy, as these systems can sometimes cause additional strain on the engine. With a delete, owners may experience a more efficient combustion process, leading to reduced fuel consumption.

Reduced maintenance:

 Emission control systems, particularly the DPF, can require regular maintenance and cleaning to function correctly. By removing these systems, owners can eliminate the need for this maintenance and potentially save on long-term expenses.

Prolonged engine life: 

The EGR system can introduce exhaust gases back into the engine, which can lead to carbon buildup and increased wear over time. By deleting the EGR system, owners may be able to prolong the life of their 6.7 Cummins engine.

Elimination of DEF expenses:

Diesel Exhaust Fluid (DEF) is used to help reduce emissions in diesel engines. However, the cost of purchasing DEF and maintaining the DEF system can add up over time. By deleting the DEF system, owners can eliminate these expenses.

While there are several potential benefits to deleting a 6.7 Cummins engine, it’s crucial to consider the risks and drawbacks as well. These can include voiding the vehicle’s warranty, legal and environmental consequences, and potential impact on resale value. Ultimately, each owner must weigh the pros and cons and decide if a delete is the right choice for their specific needs and circumstances.

Cost of Necessary Parts and Components

When planning a 6.7 Cummins delete, it’s essential to understand the costs associated with the necessary parts and components. Prices can vary depending on the brand, quality, and type of kit you choose. Here’s a breakdown of the primary components involved in the deletion process and their approximate costs:

EGR Delete Kit: 

EGR Delete Kit

The Exhaust Gas Recirculation (EGR) delete kit includes the necessary components to block off or bypass the EGR system. EGR delete kits for a 6.7 Cummins engine typically range from $100 to $250.

DPF Delete Kit: 

EGR Delete Kit

The Diesel Particulate Filter (DPF) delete kit involves removing the DPF and replacing it with a straight pipe or a performance exhaust system. DPF delete kits can vary widely in price, depending on the type of exhaust system chosen. Expect to pay anywhere from $300 to $1,000 for a DPF delete kit.

DEF Delete Kit: 

DEF Delete Kit

The Diesel Exhaust Fluid (DEF) delete kit eliminates the need for DEF in your vehicle by altering the engine’s tuning or control module. DEF delete kits can range from $200 to $600, depending on the sophistication of the tuning device or module.

Engine Tuner: 

Engine Tuner

Deleting the emission control systems often requires a specialized engine tuner to recalibrate the engine’s computer. Engine tuners are available at various price points, typically ranging from $300 to $1,000 or more, depending on the brand and features offered.

Additional Components: 

In some cases, additional components such as upgraded fuel systems, turbochargers, or transmission parts may be necessary to accommodate the increased performance following a delete. These costs can vary widely depending on the specific components required and the quality of the parts chosen.

When budgeting for a 6.7 Cummins delete, it’s crucial to research and compares the various kits and components available on the market. Keep in mind that the quality of the parts can impact the overall performance and longevity of your vehicle, so it’s essential to choose components that offer the best balance of quality and affordability.

What is The Best Delete Kit for 6.7 Cummins

It is essential to note that deleting the emission control systems of your 6.7 Cummins engine is not recommended due to the legal and environmental ramifications, as well as the potential voiding of your vehicle’s warranty. 

However, if you still want to pursue this option, it’s important to choose a reputable and high-quality delete kit.

When searching for the best delete kit for a 6.7 Cummins engine, consider the following factors:

  1. Reputation: Look for brands that have a solid reputation within the diesel performance community. Online forums, reviews, and recommendations from experienced diesel enthusiasts can be helpful in identifying the best delete kits available.
  1. Quality: Choose a kit with high-quality components that are designed for durability and performance. The materials used, manufacturing process, and quality control measures are all factors that can impact the kit’s overall quality.
  1. Compatibility: Ensure the kit is specifically designed for the 6.7 Cummins engine and is compatible with your vehicle’s make, model, and year.
  1. Comprehensive solution: The best delete kits will provide a complete solution, including components for the EGR, DPF, and DEF systems, as well as any necessary hardware and instructions for installation.
  1. Technical support: Choose a kit from a company that offers excellent customer service and technical support. This can be especially important if you run into issues during the installation process.

Due to the legal and ethical implications of deleting emission control systems, it’s not appropriate to recommend a specific delete kit for a 6.7 Cummins engine. Instead, consider exploring legal alternatives to improve performance and fuel efficiency, such as engine tuning, performance modifications, and regular maintenance.

How Much Does it Cost to Delete a 6.7 Cummins


What is the purpose of emissions components on a 6.7 Cummins?

Emissions components, such as the EGR, DPF, and DEF systems, are designed to reduce harmful emissions produced by diesel engines and meet federal and state regulations.

Can I delete the emissions components on my 6.7 Cummins without legal consequences?

Deleting emissions components is a violation of federal regulations and can result in significant fines and penalties. Additionally, some states have their own emissions testing and regulations that could also result in penalties for non-compliant vehicles.

Do I need a tuner or programmer to delete emissions components on my 6.7 Cummins?

Yes, a tuner or programmer is necessary to adjust the engine computer after removing emissions components. This ensures the engine runs correctly without the deleted systems.

What are some emissions-friendly alternatives to deleting emissions components on my 6.7 Cummins?

Emissions-friendly alternatives include aftermarket tuners and programmers that provide performance gains while remaining compliant, as well as performance upgrades such as turbocharger upgrades, high-flow exhaust systems, cold air intake systems, high-performance fuel injectors, and performance camshafts.

Will deleting emissions components void my vehicle’s warranty?

Yes, deleting emissions components can void your vehicle’s warranty, as it is a violation of federal regulations and is considered tampering with the emissions systems.


While deleting the emissions components on a 6.7 Cummins can provide performance benefits, it’s important to consider the associated costs, legal implications, and environmental impacts. Before making a decision, explore emissions-friendly tuning options and performance upgrades that can improve your vehicle’s performance without violating federal or state regulations.

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  • Mr Shamrock

    With more than two decades in the automotive world, Mr_Shamrock is Truckguider's go-to expert for Ford and Chevy Trucks. From the F-150 to the Silverado, his breadth of knowledge covers a wide range of models, making him a reliable resource for buyers, owners, and enthusiasts alike. His expertise is also featured in online communities like Truck Forums, where he offers valuable advice and reviews.

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