How to Remove Your 6.7 Cummins DPF and EGR?

As a heavy-duty enthusiast with a passion for automotive performance, I understand the appeal of improving automotive performance. One common modification among diesel enthusiasts is the removal of the diesel particulate filter (DPF) and exhaust gas recirculation (EGR) system. These modifications can increase engine power, fuel efficiency and longevity.

Be forewarned that these parts are intended to reduce emissions and their removal may be illegal in some areas. Always check local regulations and consider the environmental impact before making any modifications.

Understanding the DPF and EGR Systems

What is a DPF?

The Diesel Particulate Filter (DPF) is an emission control device designed to trap and store soot (particulate matter) from the exhaust gases of a diesel engine. Over time, the DPF needs to be cleaned or "regenerated" to remove the accumulated soot. This system helps reduce the amount of particulate matter released into the atmosphere, contributing to cleaner air.

What is an EGR?

The Exhaust Gas Recirculation (EGR) system reduces nitrogen oxide (NOx) emissions by recirculating a portion of the engine's exhaust gases back into the combustion chamber. This process lowers the combustion temperature, thus reducing NOx formation. While beneficial for emissions control, the EGR system can lead to carbon build-up and other issues that may impact engine performance over time.

Why Remove the DPF and EGR?

Many diesel enthusiasts choose to remove the DPF and EGR systems to achieve several benefits:

1. Increased Power and Torque: The removal of these systems can reduce exhaust backpressure, allowing the engine to breathe more freely and produce more power.
2. Improved Fuel Efficiency: With less restriction in the exhaust system, the engine can operate more efficiently, leading to better fuel economy.
3. Reduced Maintenance Costs: DPF and EGR systems can be prone to issues like clogging and carbon build-up, which can be costly to fix. Removing these components can reduce the need for frequent maintenance.
4. Longer Engine Life: By eliminating the EGR system, you reduce the amount of soot and carbon reintroduced into the engine, potentially extending the engine's lifespan.

Tools and Equipment Needed

Before you start, gather the necessary tools and equipment:

1. Basic Hand Tools: Wrenches, sockets, screwdrivers, etc.
2. Jack and Jack Stands: For safely lifting and supporting the vehicle.
3. Exhaust Pipe Cutter or Sawzall: For cutting the exhaust pipe.
4. DPF Delete Pipe: We recommend the DPF Delete Race Pipe for 2019-2022 Dodge Ram 2500/3500 Cummins from DynoVox Parts. This high-quality pipe is designed to replace the stock DPF, providing a straight-through exhaust path.
5. EGR Delete Kit: Includes block-off plates and necessary hardware.
6. Tuner/Programmer: To disable the DPF and EGR systems in the engine's computer.

Step-by-Step Guide

1. Preparing the Vehicle

Safety First: Ensure the vehicle is parked on a flat surface. Use jack stands to secure the vehicle after lifting it with a jack.
Disconnect the Battery: To avoid any electrical issues, disconnect the negative terminal of the battery.

2. Removing the DPF

Locate the DPF: The DPF is located in the exhaust system under the vehicle, typically near the rear of the engine.
Disconnect Sensors: Carefully disconnect the sensors attached to the DPF. These sensors are crucial for monitoring the system and must be handled with care.
Remove the DPF: Use the exhaust pipe cutter or Sawzall to cut the exhaust pipe before and after the DPF. Remove any clamps or bolts securing the DPF in place.
Install the DPF Delete Pipe: Install the DPF Delete Pipe in place of the removed DPF. The DynoVox Parts DPF Delete Race Pipe is designed for a precise fit and easy installation. Secure it with the provided clamps and hardware.

3. Removing the EGR System

Locate the EGR Components: The EGR system consists of the EGR valve, EGR cooler, and associated piping.
Remove the EGR Valve and Cooler: Disconnect the electrical connections and coolant lines. Remove the bolts securing the EGR valve and cooler.
Install the EGR Delete Kit: Install the block-off plates included in the EGR delete kit. These plates prevent exhaust gases from re-entering the intake system.

4. Reprogramming the ECU

Install the Tuner/Programmer: To avoid engine lights and ensure optimal performance, you need to reprogram the Engine Control Unit (ECU). Use a tuner or programmer compatible with your vehicle's make and model to disable the DPF and EGR systems.
Follow the Instructions: Each tuner will have specific instructions. Ensure you follow them closely to avoid issues.

5. Finishing Up

Double-Check Everything: Ensure all components are securely fastened, and there are no loose connections or leaks.
Reconnect the Battery: Reconnect the negative terminal of the battery.
Start the Engine: Start the vehicle and check for any error codes or unusual noises. A test drive is recommended to ensure everything functions correctly.

Conclusion

Removing the DPF and EGR systems from your 6.7 Cummins engine can significantly enhance performance, fuel efficiency, and reliability. However, it's essential to consider the legal and environmental implications of these modifications. Always comply with local regulations and be mindful of the potential impact on air quality.

If you decide to proceed with these modifications, we highly recommend the DPF Delete Race Pipe for 2019-2022 Dodge Ram 2500/3500 Cummins from DynoVox Parts. This high-quality product ensures a seamless installation and optimal performance, allowing your Cummins engine to reach its full potential.

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