Check if this fits your vehicle
5-inch turbo-back design: improves exhaust flow after the turbocharger and reduces drag.
Reduced back pressure: helps improve throttle response and power output efficiency.
T409 stainless steel: more heat-resistant, corrosion-resistant, and wear-resistant than the original aluminized steel tubing.
Muffler-less design: provides a deeper, more aggressive exhaust note for off-road modifications.
Reduced maintenance: eliminates DPF-related clogging and regeneration issues, reducing long-term maintenance burden.
Check if this fits your vehicle
Will not fit on 2500 with air-ride
The original exhaust path is approximately:
After installing a 5-inch Turbo-Back system, it becomes:
This means that a standard "Turbo-Back" DPF delete pipe, which starts behind the turbo, completely replaces the entire section of the factory exhaust system from the turbo outlet all the way to the rear of the vehicle. It primarily removes the following factory exhaust aftertreatment components:
Used to oxidize carbon monoxide and unburned hydrocarbons in the exhaust gases.
Used to capture soot particles in the exhaust gases. This is the main component being removed.
A catalytic unit that works with Diesel Exhaust Fluid (DEF) to reduce nitrogen oxide (NOx) emissions.
It usually becomes a completely straight-through system unless you choose the version with a muffler.
Installing this type of DPF Delete pipe requires a dedicated ECU tuning program and Tuner, such as EZ Lynk, to disable the emissions monitoring functions in the vehicle's computer. Otherwise, the vehicle will immediately display warning lights and enter reduced-speed mode.
This product targets several major pain points experienced by 6.7L Cummins owners:
The DPF gradually becomes clogged with soot. Once the blockage becomes severe, the vehicle may enter "limp mode" and restrict power, while replacing the DPF can be extremely expensive.
To clean the DPF, the system performs “regeneration,” which involves injecting additional fuel to generate high temperatures and burn away particulate matter. This wastes fuel and increases the load on the engine.
The exhaust back pressure created by the DPF can restrict engine performance, resulting in noticeable turbo lag, sluggish throttle response, and reduced fuel economy.
The Exhaust Gas Recirculation (EGR) system can easily become clogged with carbon deposits, or its cooler may crack. This is also a common problem with this engine.
Models produced after 2013 added a Diesel Exhaust Fluid (DEF) system. Sensor failures or crystallization blockages in this system can also cause the vehicle to reduce speed or enter limp mode.
The 6.7 Cummins 5 inch turbo back exhaust has a larger cross-sectional area than the factory system or a 4-inch system, significantly increasing exhaust flow. Combined with the DPF delete design, exhaust gases can flow unobstructed from the turbocharger outlet to the rear of the vehicle. For modified vehicles, tow vehicles, or heavy-duty trucks, greater exhaust flow is one of the main reasons to upgrade to a 5-inch system.
Removing the Diesel Particulate Filter (DPF) itself significantly reduces exhaust restriction, while the 5-inch diameter further lowers back pressure. Smoother exhaust flow results in faster turbo response and significantly improved horsepower and torque output.
This large-diameter, straight-through exhaust pipe without a Diesel Particulate Filter (DPF) or muffler delivers a direct and pure sound experience. Your Dodge Ram 2500 or 3500 will produce a deeper and fuller sound at idle, a powerful and aggressive exhaust note during acceleration, and a more clearly audible turbo blow-off sound.
This is not a simple "mild upgrade" replacement part. It is hardware specifically designed for high-performance modifications. This 5-inch turbo-back exhaust system for the 6.7L Cummins engine provides exceptional exhaust flow capability to meet the demands of truly hardcore users.
The system is manufactured from T-409 stainless steel, which offers better resistance to high temperatures and corrosion than the original aluminized steel. Whether exposed to sustained high temperatures caused by heavy towing or road salt during winter, the system can maintain its structural integrity and ensure long-term, rust-resistant, reliable operation.
We provide a 45-day return policy and a professional customer service team offering both pre-sale and after-sale support. From fitment confirmation to installation guidance, we help ensure a smooth purchasing and ownership experience.
Swipe horizontally to view the full table on mobile.
| Comparison Item | With Muffler | Without Muffler |
|---|---|---|
| Sound | Deep but not too loud | Extremely loud and attention-grabbing |
| Highway Driving | Comfortable without excessive drone | Resonance can be loud enough to cause headaches |
| Performance | More than sufficient | Slightly better, but difficult to notice |
| Risk of Being Inspected | Relatively low | High |
Conclusion: For daily driving, choose the version with a muffler—you cannot go wrong. Only choose the version without a muffler if the vehicle is purely for enthusiast use and you are not concerned about noise or being inspected.
Muffler version: https://www.suncentauto.com/product/kax-2013-2018-dodge-ram-2500-3500-cummins-6-7-diesel-5-dpf-delete-pipe-w-muffler
Removing only the DPF without removing the EGR is like cleaning the living room without blocking the source of the dust—the problem is only half solved. The EGR system recirculates soot-filled exhaust gases back into the engine and is the main cause of carbon buildup in the intake system, turbocharger, and other components. Removing both systems is necessary to achieve complete improvements in performance and reliability.
The EGR is the source of engine carbon buildup. Only after it is removed can the intake system remain truly clean.
The EGR valve and cooler are common failure points. Removing them saves trouble and money.
When combined with DPF removal and tuning, horsepower and torque can be increased to another level.
If your truck is used heavily, such as for heavy towing, off-roading, or extended idling, or if you are pursuing maximum performance and reliability, removing the EGR at the same time is the more thorough and better option.
IMPORTANT NOTICE
This product is intended for off-road, racing, or competition use only and is not legal for public road use or for vehicles subject to emissions regulations in the United States. Vehicles equipped with this product may fail emissions or state inspections.
Customers are responsible for ensuring compliance with all applicable local, state, and federal laws. Installation of aftermarket parts may also affect your vehicle warranty—please consult your manufacturer for warranty coverage.
International legality may vary; users should confirm local laws before installation.
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