The DPF Delete 6.7 Cummins diesel engine has been installed in Dodge and Ram heavy-duty trucks since 2007 and is known for its great towing capabilities, durability, and performance. However, as with all modern diesel engines, it is equipped with emissions control systems such as the Diesel Particulate Filter (DPF). Although the DPF is crucial in helping reduce soot emissions, some truck owners look at DPF delete options in an effort to make the engine run better and operate more efficiently. This article explores what a DPF delete is, its advantages, and considerations unique to the 6.7 Cummins.
Understanding the DPF on the 6.7 Cummins
DPF is an emission control device that traps and removes soot particles from the engine exhaust. It works by regeneration that burns off soot. That way, the harmful emission level is reduced. However, the DPF brings several constraints to the exhaust system. These can impact performance, fuel efficiency, and the maintenance requirements.
What is a DPF Delete?
A DPF delete removes the Diesel Particulate Filter and replaces it with a straight pipe or a high-flow exhaust system. Since the DPF is electronically integrated with the engine’s computer system, a delete requires an ECU tuner to disable sensors and ensure that the engine runs without throwing error codes.
Benefits of a DPF Delete for 6.7 Cummins
Better Performance
Removing the DPF reduces back pressure in the exhaust system, which makes the engine breathe more freely. It therefore offers substantial gains in horsepower and torque.
Improved turbo spool time and throttle response contribute to making the truck drive more powerfully and responding better.
Better Fuel Economy:
It will run much more efficiently because there is less backpressure and no regeneration cycles are needed. This usually means better fuel economy. Some drivers have reported gains of 1-3 MPG after doing a DPF delete.
Lower Maintenance Costs:
The DPF must be maintained regularly to operate correctly. This includes cleaning or replacing the filter. If the DPF becomes clogged or damaged, the repair costs can be costly. A DPF delete eliminates all these costs.
Better Exhaust Sound:
A DPF delete results in a louder, deeper, more aggressive exhaust note, which diesel enthusiasts find very attractive.
Considerations and Disadvantages
Legal Consequences
DPF deletes are banned from on-road vehicles in many states, including the U.S. under the Clean Air Act. Vehicles with removed emissions systems will fail inspections and be subject to heavy fines.
Such modifications are for off-road or competition use.
Environmental Impact:
Sacking the DPF increases soot and particulate matter into the air, which enhances air pollution.
Warranty Voided
Tampering or removal of emission devices may void the manufacturer’s warranty. The owner bears the repair cost.
Best DPF Delete Kits for 6.7 Cummins
Several manufacturers are offering quality DPF delete kits and exhaust solutions suitable for the
Flo~Pro: They are best known for their durable and efficient DPF delete pipes, providing options that are easy to install.
MBRP: Complete exhaust systems with a focus on performance and sound.
H&S Performance: Known best for their tuners and exhaust kits, H&S provides reliable solutions for tuning post-DPF delete.
Diamond Eye Performance: High-performance, cost-effective exhaust systems designed for Cummins trucks
Installation and Tuning
The DPF needs to be deleted, which is not a mere replacement of the filter. The reprogramming of the ECU of the engine must disable DPF-related sensors in order to avoid limp mode or error codes. EFI Live, RaceME, or H&S Mini Maxx are some of the known tuners for 6.7 Cummins owners. Professional installation is best to ensure optimal performance and avoid complications.
Conclusion
A DPF delete on the 6.7 Cummins can unlock tremendous performance gains, improved fuel efficiency, and reduced maintenance costs. This is why many off-road and competition diesel enthusiasts opt for this modification. However, legal and environmental considerations must be taken into account before taking this step. For those who choose to move forward, investing in a high-quality DPF delete kit and professional tuning ensures the best results while protecting the longevity of the engine. Always consult local laws and professionals before making modifications to your truck’s emissions system.
