Diesel truck enthusiasts often face challenges balancing emissions compliance with optimal engine performance and reliability. For owners of 6.7L Cummins engines, especially model years 2013-2018, the promise of improved power and maintenance savings motivates many to consider delete kits and custom tuning. Understanding the components these kits address, the options available, and the legal implications can help clarify whether a delete kit and tuner upgrade align with your truck’s needs and goals.
Understanding the 6.7L Cummins Delete Kit Concept
A 6.7L Cummins delete kit is a package designed to remove or bypass key emissions control components from the diesel engine’s exhaust and intake systems. These kits target areas such as the Exhaust Gas Recirculation (EGR), Diesel Particulate Filter (DPF), and Diesel Exhaust Fluid (DEF) system to improve engine performance and reduce maintenance problems. Users often seek these kits to enhance horsepower, reduce carbon buildup, and improve reliability, particularly for off-road or race applications. However, it’s important to note that using such kits on public roads is generally illegal under EPA regulations and limited to off-road use only.
Core Emission Components Removed by Delete Kits
Exhaust Gas Recirculation (EGR) System
The EGR system recirculates a portion of exhaust gases back into the engine intake to lower combustion temperatures and reduce nitrogen oxide emissions. On 6.7L Cummins engines, the EGR system can cause significant carbon buildup, leading to clogged intake ports and reduced efficiency. An EGR delete kit typically includes block-off plates and coolant reroute hardware to seal off the EGR passageways, preventing exhaust gases from reentering the intake. This results in less carbon buildup, lower intake air temperatures, and improved combustion stability, ultimately boosting engine responsiveness and reducing maintenance frequency. For 2013-2018 models, an EGR & Throttle Valve Delete Kit offers a carefully engineered solution to improve airflow and reliability.
Diesel Particulate Filter (DPF) and Catalyst
The Diesel Particulate Filter and catalytic converter trap soot and harmful particles before exhaust is released into the atmosphere. While essential for emissions compliance, these components can cause backpressure and clogging issues over time. A DPF delete pipe replaces the factory DPF and catalyst with a straight-through exhaust pipe, improving exhaust flow and reducing the need for frequent regeneration cycles that can interrupt driving. This upgrade is popular among those seeking freer-flowing exhaust systems and reduced downtime, though it does render the vehicle non-compliant with emissions standards. For 2013-2018 Dodge Ram 6.7L Cummins, the 4" or 5" DPF Delete Race Pipe is a common choice tailored to these model years.
Diesel Exhaust Fluid (DEF) System
The DEF system injects urea-based fluid into the exhaust stream to convert nitrogen oxides into nitrogen and water via Selective Catalytic Reduction (SCR). Key components include heaters, sensors, and injectors designed to operate under various conditions. DEF systems on the 6.7L Cummins are prone to failures, especially in colder climates where heaters may malfunction or sensors degrade. DEF delete kits bypass these components, eliminating related issues and improving reliability for off-road or purpose-built trucks that do not require emissions certification.
Why Choose a 6.7L Cummins Delete Kit? Key Advantages
Installing a 6.7L Cummins delete kit provides notable performance gains, including increased horsepower and torque from reduced exhaust restrictions and cleaner combustion. Fuel economy often improves as the engine runs smoother without battling clogged components. Deleting problematic emission systems also reduces recurring repair costs and downtime associated with EGR coolers, DPF clogging, and DEF sensor failures. Overall, delete kits offer a path to long-term reliability for users willing to accept the off-road use limitation.
Delete Kit Options for 2013-2018 6.7L Cummins
All-in-One Full Delete Kits
Full delete kits combine EGR, DPF, and DEF deletes with a compatible tuner to provide a seamless, bolt-on emission system removal solution. For 2013-2018 6.7L Cummins models, these kits typically include EGR block-off plates, DPF & cat delete pipes, DEF bypass harnesses, and software tuned to optimize engine parameters. The advantage is a comprehensive, plug-and-play setup that addresses all major emission restrictions, enabling peak performance without piecemeal installation complications.
EGR Delete Kit Specifics
The 6.7 Cummins EGR delete kit for 2013-2018 includes precisely engineered block-off plates made from heat-resistant materials and hardware for rerouting coolant lines originally feeding the EGR cooler. This kit targets soot and carbon buildup problems unique to the EGR system and is generally easier and less expensive to install than a full delete. While performance gains and reliability improvements are substantial, it doesn’t address DPF or DEF-related issues, so some users may prefer a full delete for complete emissions removal and tuning. An example of a related coolant reroute product is the Coolant Hose Adapter Repair Kit for 2009-2024 Ram 6.7L diesel engines, which ensures durability in coolant rerouting.
DPF & Cat Delete Pipes
Exhaust systems featuring 4" and 5" turbo-back configurations are popular upgrades replacing the factory DPF and catalytic converters with free-flowing stainless steel pipes. These pipes are designed to fit exact model years, optimizing exhaust velocity and sound characteristics. Many aftermarket mufflers are available to fine-tune exhaust tone and volume, catering to user preferences and local sound restrictions. These systems not only enhance performance but also extend the life of turbochargers and engines by reducing backpressure and heat. For the 2013-2018 6.7L Cummins, consider the DPF Delete Race Pipe tailored to this generation for optimal fit and function.
Tuning Strategies for 6.7L Cummins with Delete Kits
Importance of Custom ECM Tuning
Proper custom ECM tuning is critical after installing any emission delete kit. The factory engine control module monitors sensors related to the EGR, DPF, and DEF systems and will trigger check engine lights or limp mode if it detects deleted components. Tuners recalibrate fuel delivery, timing, and sensor readings to optimize power while eliminating error codes. Custom tunes are typically programmed with your truck’s VIN and model year to ensure safe, efficient operation at stock or increased power levels.
Popular Tuners Compatible with Delete Kits
Among widely recommended tuners are EZ Lynk, EFI Live, and Mini Maxx. EZ Lynk offers intuitive power level switches, quick on-the-fly program changes, and easy internet updateability, ideal for users seeking convenience. EFI Live provides in-depth customization for advanced users, while Mini Maxx balances affordability with performance features. Choosing the right tuner depends on technical skill, budget, and desired level of control over engine parameters. Many of these tuners come bundled with popular full delete kits, simplifying the upgrade process.
Installation Overview and Considerations
Installation complexity varies depending on the kit; full deletes typically require several hours and moderate mechanical experience. Essential tools include wrenches, coolant system flush supplies, and sometimes welding equipment for exhaust modifications. While many owners tackle installation themselves, professional installation is recommended for critical coolant rerouting and tuning. Prior to installation, verify kit compatibility with your truck’s model year and engine configuration to avoid fitment issues, and prepare your truck by draining fluids and disconnecting batteries safely.
Common Questions About 6.7L Cummins Delete Kits
Can I install a delete kit on a 2018 6.7L Cummins?
Yes, delete kits are available and fit 2013-2018 6.7L Cummins engines, covering the mid-generation range. It’s vital to remember these kits are intended for off-road use only due to emissions regulations that prohibit their use on public highways. Always consult local laws before proceeding.
Will deleting the EGR affect my engine’s longevity?
Removing the EGR system can improve engine longevity by preventing soot and carbon buildup that damage intake valves and cylinders over time. However, this benefit assumes proper installation and tuning, along with awareness that deletes usually void factory emissions warranties.
What are the advantages of a full delete kit versus selective deletes?
Full delete kits offer comprehensive emission system removal, resulting in better performance, reliability, and often easier installation with a single tuning solution. While upfront costs may be higher than selective deletes, full kits generally save time and provide peace of mind by addressing all major failure points in one package.
Top Recommended 6.7L Cummins Delete Kit Brands & Kits
Leading brands such as BD Diesel, Edge Products, and EFI Live produce durable and high-performance 6.7L Cummins delete kits with OE-level connectivity and heat-resistant materials. Popular all-in-one bundles include compatible tuners like the EZ Lynk system or Mini Maxx, streamlining the upgrade process. Optional 5" turbo-back exhaust systems paired with mufflers offer tailored sound and performance. Selecting a kit specifically made for your model year ensures fitment and function without compromise.
Understanding Off-Road Use and Legal Implications
Delete kits must be reserved for off-road, racing, or agricultural applications, as federal and state laws prohibit emission system tampering on road vehicles. Non-compliance risks include fines, failed vehicle inspections, and invalidated emissions certificates. Prospective buyers should verify local and state statutes before purchase and installation to avoid legal consequences.
Maintaining Your 6.7L Cummins After Installing a Delete Kit
Maintaining a deleted 6.7L Cummins involves regular monitoring of fuel filters, coolant levels, and oil condition to support the diesel engine’s enhanced performance. Diagnostic scans remain useful for tracking system health despite removed emissions parts, and periodic tuner updates can refine performance or address software refinements. Keeping an eye on engine temperature and responding quickly to any anomalies will extend engine life after delete installation.
Final Thoughts: Is a 6.7L Cummins Delete Kit Right for You?
Choosing a 6.7L Cummins delete kit depends on priorities like improved horsepower, reduced downtime, and long-term reliability balanced against legal restrictions and installation commitment. For off-road diesel truck owners intent on maximum performance and lower maintenance, these kits provide compelling benefits. Evaluating your truck’s model year, intended use, and local regulations helps ensure the right solution is selected. Always pair a delete kit with professional tuning and careful installation to unlock the full potential of your Cummins engine.