What's a 6.7 Cummins Delete Pipe?
A 6.7 Cummins Delete Pipe is a high-flow, straight-through exhaust component engineered to physically replace the restrictive factory emissions assembly found on RAM 2500 and 3500 trucks (2007.5–2026).
Key Benefits of Installing a 6.7 Cummins Delete Pipe
- Reliability: Eliminate limp mode and see dealer errors for total peace of mind.
- Fuel Efficiency: End fuel-heavy regen cycles to maximize your miles per gallon.
- Engine Longevity: Stop raw diesel from diluting your oil and washing cylinder walls.
- Better Cooling: Lower EGTs by removing the restrictive DPF and SCR bottlenecks.
- Lower Maintenance: Say goodbye to DEF refills and expensive sensor replacements.
- Performance: Experience faster turbo spooling and much sharper throttle response.
6.7 Cummins Delete Pipe: Deleted vs. Stock
| Dimension |
Stock (Factory) |
Deleted (Upgraded) |
| Horsepower |
Limited by backpressure (~350–420 HP); power is often pulled back by the ECM to manage heat. |
Increased; Safe gains of 50–150+ HP are common; high-performance builds can exceed 600+ HP. |
| Fuel Economy |
Average; Significant fuel is wasted during "Active Regen" to burn soot out of the DPF. |
Improved; Most owners report a gain of 3–5 MPG by eliminating regens and exhaust restriction. |
| Maintenance Cost |
High; Requires regular DEF refills and frequent sensor repairs (NOx/EGT); DPF cleanings are costly. |
Minimal; Permanently removes the need for DEF and the service of complex, failure-prone exhaust filters. |
| Reliability |
Moderate; DEF pump failures and "See Dealer" codes are the leading cause of roadside Limp Mode. |
Significantly Enhanced; Removes the primary electronic failure points and prevents oil dilution. |
| Exhaust Gas Temp |
High; The DPF acts as a "cork," trapping heat at the turbo; EGTs spike dangerously during regeneration. |
Lower EGTs; High-flow pipes drop operating temperatures by 150–200°F, extending turbo life. |
| Legal Status |
Street Legal; EPA compliant. |
Off-Road / Competition Use Only. |
| Backpressure |
High; The dense DPF substrate creates a massive bottleneck for the single turbocharger. |
Minimal; A straight pipe allows for nearly zero resistance, improving low-end throttle response. |
| Sound |
Silent; The DPF/SCR assembly acts as a massive primary muffler, masking all engine sound. |
Aggressive; Unlocks the signature "Big Rig" straight-six roar and a loud, crisp turbo whistle. |
6.7 Cummins Delete Pipe Models Year Fitment Guide
Choose the perfect 6.7 Cummins Delete Pipe by year to guarantee seamless fitment and performance. We offer delete pipes tailored to the exhaust configurations of the 3.0L EcoDiesel platform.
| Delete Pipe |
Model Year |
Emissions Systems Equipped |
Common Issues |
Recommended Delete Pipe Setup |
| 6.7 Cummins Delete Pipe |
2007.5–2009 |
EGR, DPF (No DEF) |
Frequent regen cycles, DPF clogging, power loss |
DPF Delete Pipe with supported tuning |
| 2010–2012 |
EGR, DPF |
Limp mode, sensor failures, excessive exhaust heat |
DPF Delete Pipe with compatible tuning |
| 2013–2018 |
EGR, DPF, DEF (SCR) |
DEF system faults, regen downtime, warning lights |
DPF + SCR Delete Pipe with supported tuning |
| 2019–2021 |
Advanced EGR, DPF, DEF (Updated ECM) |
Stricter ECM control, limited tuning availability |
Year-Specific Delete Pipe (supported applications only) |
| 2022–2025 |
Next-Gen Emissions & Enhanced ECM Security |
Very limited compatibility |
Vetted Delete Pipes for Supported Models Only |
Below is a guide to our specialized EcoDiesel delete solutions. You can select the corresponding product below to view full specifications and compatibility details:
Note: Every one of these pipes requires a DPF-delete capable tuner (like EZ Lynk or SCT) to prevent your Cummins from throwing codes or entering Limp Mode.
How to Install a 6.7 Cummins Delete Pipe
Installing a 6.7L Cummins delete pipe (2007.5–present) replaces the factory emissions exhaust components with a high-flow pipe designed to reduce exhaust restriction, lower exhaust gas temperatures (EGTs), and improve overall drivability.
Installation Steps
- ECM Preparation & Tuning: The installation process begins with ECM calibration using a supported tuning platform. This step disables emissions-related diagnostics and prepares the engine management system for hardware removal.
- Factory Emissions Exhaust Removal: The factory exhaust section containing the DPF and, where equipped, SCR (DEF) components is unbolted and removed. Sensors such as EGT and NOx are disconnected or electronically disabled according to the tuning configuration.
- Delete Pipe Installation: The 6.7 Cummins delete pipe is installed in place of the factory emissions exhaust. These pipes are designed to align with factory hangers and provide proper clearance around the frame, transmission crossmember, and driveline.
- Sensor & Connection Verification: Any required sensor fittings or plugs are installed, and all clamps and connections are aligned and tightened to ensure a secure, leak-free exhaust system.
- System Check & Final Verification: After installation, the engine is started and inspected for exhaust leaks. The tuner is used to clear any remaining diagnostic codes and verify proper operation during a short test drive.
Note: Every EngineGo kit includes a comprehensive, model-specific guide to ensure your installation is seamless and your fitment is guaranteed. For technical deep-dives, step-by-step photos, and specific torque specs, you can find detailed information under the "Installation Guide" tab on every product page.
Why Choose EngineGo for 6.7 Cummins Delete Pipe
Choosing EngineGo means partnering with diesel performance experts. We back every build with technical support, ensuring your truck moves from the shop to the street with peak power and reliability.
15+ Years of Expert Support
In-House Specialists: Our team has over 15 years of hands-on experience in Ford Powerstroke, Cummins, and Duramax platforms..
Expert Guidance: We provide comprehensive support, from initial fitment questions to final tuning advice.
High-Performance Reliability
Built to Last: We pride ourselves on offering parts designed for maximum durability and long-term reliability.
Expertly Vetted: Every product is backed by our deep understanding of diesel engines.
A Seamless Shopping Experience
Free Shipping: Many of our kits include free shipping to get your project started without extra costs.
Money-Back Guarantee: Shop with confidence knowing your purchase is protected if you aren't satisfied.
Off-Road Use Disclaimer
Diesel delete kits are intended for off-road and competition-use vehicles only. These products are not legal for use on public roads and are sold strictly for non-emissions-controlled applications.
Always verify and comply with local, state, and federal regulations before purchase or installation.
FAQ
What exactly is deleted with a 6.7 Cummins delete pipe?
A delete pipe refers to a straight-through exhaust section that physically replaces the heavy factory canisters under the truck. This typically includes the Diesel Particulate Filter (DPF) and the Selective Catalytic Reduction (SCR) catalyst. Most owners pair this with an EGR delete to stop soot from recirculating into the intake manifold.
Do I need a tuner for a 6.7 Cummins delete pipe?
Yes. No exceptions. If you install the pipe without a specialized Delete Tune, the truck’s ECM will immediately detect that the pressure and temperature sensors are missing. This will trigger a Service Exhaust System warning and put the truck into a 5 MPH Limp Mode within miles.
Why are 2019–2026 RAM models more expensive to delete?
Starting in 2019, RAM implemented high-level Bosch encryption on their ECMs. Unlike the 2007–2018 models that could be tuned via the OBDII port, the newer trucks require:
- ECM Unlock/Swap: The factory computer must be sent out to be "unlocked" or swapped for a pre-configured unit.
- Security Bypass Cable: A specialized cable is required to bridge the security gateway in the dashboard to allow communication with the tuner.
Will my fuel economy actually improve?
Yes. By eliminating the "Active Regeneration" process—where the engine sprays raw diesel into the exhaust to burn off soot—most owners see a gain of 2–5 MPG. The truck also breathes easier without the backpressure of the dense ceramic DPF substrate.
