Owners of 2013-2018 Ram trucks equipped with the 6.7L Cummins engine often explore performance upgrades that balance power, fuel economy, and reliability. Amid evolving emissions regulations, delete kits targeting key systems like EGR, DPF, and DEF have gained traction for off-road or heavy-duty applications. Understanding the components, installation, and benefits of a Cummins EGR delete kit can guide truck enthusiasts and professionals toward informed decisions that suit their specific needs and compliance considerations.
What Is a 6.7L Cummins Delete Kit?
A 6.7L Cummins delete kit is a specialized aftermarket package designed to remove or bypass emissions control devices found in Ram trucks equipped with the 6.7-liter Cummins diesel engine. These kits primarily target three major systems: the Exhaust Gas Recirculation (EGR) system, Diesel Particulate Filter (DPF), and Diesel Exhaust Fluid (DEF) system, each contributing to lowering emissions.
By physically removing components like the EGR valve and cooler, the DPF assembly, and DEF-related sensors and pumps, these kits facilitate improved exhaust flow and simpler engine operation. However, delete kits are intended mainly for off-road use, racing, or specialized work trucks where emissions regulations may be less strict. Street use is generally prohibited and can result in significant legal penalties.
Many truck owners pursue delete kits primarily for power gains, enhanced fuel efficiency, and improved long-term reliability. Removing emission components reduces soot buildup, lowers intake temperatures, and decreases the risk of hardware failure, making the engine less prone to downtime and costly repairs.
Key Components of a 6.7L Cummins Delete Kit
DPF & Cat Delete Pipe
The Diesel Particulate Filter serves to capture soot and particulates from exhaust gases, a crucial emissions device mandated by law. However, the DPF can become clogged over time, creating excessive back pressure and reducing engine efficiency. DPF delete kits with 4" pipes remove this filter, substituting it with a straight-through pipe—often made from durable stainless steel—to restore unrestricted exhaust flow.
These replacement pipes usually come in 4-inch or 5-inch diameters, designed to fit precisely within the exhaust path. Offering smoother flow dynamics, the delete pipe decreases back pressure, allowing the turbocharger to operate more efficiently and often resulting in noticeable power improvements.
EGR Delete Kit
The Exhaust Gas Recirculation system reduces nitrogen oxide (NOx) emissions by recirculating a portion of the exhaust gases back into the intake manifold. While effective in lowering emissions, the EGR system introduces soot and hot gases back into the engine, increasing intake temperatures and accelerating soot buildup, which can degrade engine performance over time.
EGR delete kits with block-off plates and cooler bypass pipes disable the EGR function entirely. These kits prevent exhaust gases from re-entering the intake, reducing soot deposits and intake charge temperatures. The benefits often translate into enhanced engine longevity, cleaner combustion, and reduced maintenance requirements related to clogged EGR components.
DEF System Bypass
The Diesel Exhaust Fluid system injects a urea-based solution to convert NOx emissions into harmless nitrogen and water vapor. Despite its environmental benefits, DEF systems are known for sensors, heaters, and catalyst components that can fail, leading to expensive repairs and operational issues.
A DEF delete kit bypasses sensors, heaters, and the Selective Catalytic Reduction (SCR) catalyst, eliminating the need for DEF fluid. This bypass simplifies the engine management system and can reduce downtime caused by DEF component failures. While offering practical advantages for certain off-road or work applications, DEF deletes remain illegal for on-road use due to strict emissions standards.
Tuning Devices (Mini Maxx, EZ Lynk, EFI Live)
After installing physical delete components, a critical step involves reprogramming the engine’s ECU to recognize and compensate for the removed emission devices. Without tuning, the vehicle’s computer would trigger fault codes, warning lights, or potentially limp mode.
Popular tuning devices for the 6.7L Cummins include the Mini Maxx (both V1 and V2 versions), EZ Lynk tuner, and EFI Live tuning solutions. These tuners offer bolt-on installation, internet updateable software, and pre-loaded optimized tunes tailored to the extent of the delete modifications. They prevent Diagnostic Trouble Codes (DTCs) and Check Engine Lights (CELs) while optimizing fuel delivery and ignition timing, unlocking the full performance benefits of the delete kit.
Benefits of Installing a 6.7L Cummins Delete Kit
Removing restrictive emissions hardware typically results in significant horsepower and torque improvements. Enhanced exhaust flow and cleaner combustion from EGR and DPF deletion enable the engine to breathe more freely, supporting heavier towing and more aggressive driving scenarios.
Deliberate tuning often improves diesel fuel efficiency, with many users reporting noticeable MPG gains thanks to reduced back pressure and more efficient fuel mapping. Over the long term, bypassing components prone to clogging or failure lowers maintenance expenses and minimizes downtime.
Increased engine reliability is a hallmark of delete kits. By eliminating the complexities and failures associated with emission controls, trucks can sustain longer service intervals and maintain steady power output over many miles.
That said, these benefits come with trade-offs; warranty coverage is typically voided, and installation for street-driven vehicles is unlawful in the U.S. Prospective users must weigh power and reliability gains against legal compliance and warranty considerations.
6.7L Cummins Delete Kit Compatibility: Model Years & Generations
2013-2018 Ram 6.7L Cummins (Mid Generation)
The 2013-2018 Ram 6.7L Cummins represents a mid-generation platform that introduced DEF emission control alongside an advanced compound EGR system. This generation integrated several emissions components that required more sophisticated delete components compared to earlier engines.
Kits for these years typically include full DPF and DEF deletes with tailored EGR delete block-off plates designed for the compound EGR cooler and valves unique to this platform. Installation demands an understanding of these specific parts to ensure proper fitment and system bypass.
Compared to earlier 2010-2012 engines lacking DEF systems, the 2013-2018 kits require additional hardware and tuning for the SCR and DEF sensors. Installation complexity increases, but comprehensive kits designed for this generation streamline the process.
Comparison with Other 6.7L Cummins Generations
The 2010-2012 6.7L Cummins models exclude DEF but have EGR and DPF systems, making their delete kits simpler to design. Meanwhile, 2019 and newer models introduce more sophisticated emissions tech, including updated hardware and stricter calibration protocols.
The 2013-2018 generation occupies a middle ground with more complexity than the earliest models but less than the latest ones. Consequently, delete kits for this generation demand specific tuning files and hardware selections to maintain all functions and avoid engine codes post-installation.
How to Choose the Right 6.7L Cummins Delete Kit
Selecting between a full delete kit or component-specific kits depends on the intended use and budget. Full delete kits offer a comprehensive solution with all necessary parts and tuning bundled for seamless installation, making them ideal for off-road or work trucks seeking maximum performance and reliability.
EGR-only or DPF-only kits may appeal to owners wanting incremental upgrades or those constrained by budget and installation skills. However, partial deletes can leave some emission components in place, which may affect fuel efficiency or longevity gains.
When considering a kit, evaluate your truck’s role: heavy towing, off-road adventures, or racing may justify full deletes and advanced tuners. Simpler daily drivers might prefer selective deletes.
Purchasing from well-reviewed suppliers offering fitment guarantees and quality construction—such as heat-resistant materials and bolt-on designs—is critical. Reputable sellers include pre-loaded tunes optimized for the 2013-2018 Ram Cummins, ensuring compatibility and ease of use.
Step-by-Step Installation Guide for 6.7L Cummins Delete Kits (2013-2018)
Begin by setting up a clean, well-lit workspace and assembling tools such as socket sets, wrenches, pry bars, penetrants, and protective gear including gloves and eye protection.
Step one involves carefully removing factory emissions hardware: the DPF assembly, EGR cooler and valve, and DEF system components like the dosing pump and sensors. Drain fluids as necessary, following environmental safety protocols.
Next, install supplied block-off plates for the EGR ports and cooler bypass pipes. Replace the DPF with a stainless steel 5" delete pipe or a 4" delete pipe, ensuring proper flange alignment and secure clamps. Bypass DEF sensors and heaters with wiring harness plugs or delete modules as specified.
After mechanical installation, mount and connect the tuning device—Mini Maxx, EZ Lynk tuner, or EFI Live units—then upload the appropriate calibration. It is recommended to program the tune after parts removal to avoid triggering error codes during installation.
During installation, watch for leaks at connections and sensor errors. Troubleshoot common issues such as loose clamps, sensor wiring faults, or tuner software incompatibilities. Professional help is advisable if unfamiliar with exhaust system disassembly or ECU tuning to avoid damage or functional errors.
Popular 6.7L Cummins Delete Kit Brands & Kits in 2026
Several leading brands dominate the 6.7L Cummins delete kit market for 2013-2018 models. Popular offerings feature all-in-one kits including DPF delete pipes with mufflers, EGR block-off plates, DEF bypass modules, and tuners like Mini Maxx V1 or V2, as well as EZ Lynk tuning options.
All-in-one kits provide a plug-and-play experience with bolt-on components that emphasize high-temperature resistance and durability. Modular kits allow customization by users wanting to phase upgrades or retain certain emissions parts.
| Brand/Kit | Includes | Tuning Options | Price Range |
|---|---|---|---|
| Mini Maxx Full Delete Kit | DPF & Cat Delete, EGR Block-Off, DEF Bypass, Tuner | Mini Maxx V2 Pre-loaded Tunes | $1,200 - $1,700 |
| EZ Lynk All-in-One Delete Kit | Complete Emission Deletes + EZ Lynk AutoAgent | EZ Lynk Web-Connected Tuning | $1,300 - $1,800 |
| EFI Live Modular Kit | DPF Pipes and EGR Components Only | EFI Live Custom Tuning | $900 - $1,500 |
| Basic DPF & EGR Delete Kit | Block-Off Plates + DPF Delete Pipe | Optional Tuners Compatible | $600 - $1,000 |
Customer feedback consistently notes smooth installation experiences, reliable hardware fitment, and measurable power gains. Some report fine-tuning requirements with specific tuners based on truck year and transmission variations.
Legal Considerations and Compliance for 6.7L Cummins Delete Kits
Federal and state emissions laws in the U.S. prohibit vehicle modifications that disable or remove pollution control devices for street-driven vehicles. Using a delete kit on public roads can lead to heavy fines, failed inspections, and voided warranties.
These kits are legally designated for off-road use only, such as racing, industrial, or agricultural applications where emissions regulations are more lenient or non-enforced. Before purchasing or installing, verifying local regulations is essential to avoid legal complications.
The environmental impact of removing emissions controls is significant, increasing pollutant output. Diesel enthusiasts and professionals must balance performance gains against ecological responsibility and regulatory compliance.
Maintenance Tips After Installing a 6.7L Cummins Delete Kit
Post-installation maintenance focuses on monitoring the tuner software for updates that maintain compatibility and optimize performance. Regular ECU status checks ensure the absence of new fault codes or engine irregularities.
Periodic inspections of exhaust pipes and block-off plates help detect leaks, cracks, or corrosion early, preserving exhaust integrity and preventing performance loss.
Continuing attention to engine oil quality, cooling system health, and intake air cleanliness is crucial, especially after emissions hardware removal, to extend engine life and reliability under more demanding conditions.
Frequently Asked Questions About 6.7L Cummins Delete Kits
Is a tuner required with a delete kit? Yes. Tuning devices are essential to prevent error codes and optimize engine performance after removing emission components.
What parts come in a typical kit? Kits usually include DPF delete pipes, EGR block-off plates, DEF bypass modules, and a compatible tuner or programming software.
How does deleting emissions parts affect fuel economy? Many users experience improved MPG due to reduced exhaust back pressure and refined fuel mapping, though results can vary based on driving habits.
Are delete kits compatible with all transmissions? Most kits support common transmissions paired with 2013-2018 6.7L Cummins engines; however, some tuning options are transmission-specific to ensure correct operation.
Is professional installation recommended? While experienced DIYers may manage installation, professional assistance is advisable for tuner programming and addressing complex hardware integration.
User Reviews and Real-World Experiences With 6.7L Cummins Delete Kits
Owners frequently highlight appreciable horsepower and torque gains alongside better throttle response and towing capability following delete kit installation. Fuel efficiency improvements often complement performance enhancements, making the kits popular among heavy users and off-road enthusiasts.
Installation challenges primarily revolve around the EGR cooler removal and proper wiring of DEF bypass components. Tuning setup sometimes requires tweaking to match specific truck builds or accessory loads, leading some users to seek expert assistance.
Tips from experienced users emphasize verifying model year fitment, choosing an all-in-one kit for simplicity, and staying current with tuner software updates. Online forums and testimonials serve as valuable resources for troubleshooting and pre-purchase confidence.
Insights for Diesel Enthusiasts Considering a 6.7L Cummins Delete Kit
For owners targeting improved power, enhanced fuel economy, and reduced maintenance headaches, a properly selected 6.7L Cummins delete kit can be transformative. The 2013-2018 Ram models require careful choice of hardware and tuning strategy to ensure system compatibility and reliability. Investing in an all-in-one kit from reputable suppliers minimizes installation complexity and streamlines compliance within off-road use boundaries. Ultimately, the decision hinges on balancing legal considerations, performance goals, and maintenance priorities to make the most of the robust Cummins platform.