Contents
Contents
- Why Do 2018 Ram 2500/3500 Owners Consider Deletes?
- 2018 6.7L Cummins Delete Kit Types Explained
- Special Requirement for 2018 Models: Bypass Cable
- Recommended Product: Suncent 2013-2018 6.7L Cummins All-in-One Kit
- Best Delete Kit for 2018 6.7 Cummins: What to Look For
- Legal and Warranty Risks for 2018 Ram 2500 Delete Kit
- Conclusion
The 6.7L Cummins diesel engine equipped in the 2018 Ram 2500 and Ram 3500 is widely recognized in the North American market as a high-performance and durable diesel powertrain. With strong torque and stable operating performance, it has become a preferred choice for heavy-duty hauling and off-road modification owners. However, frequent DPF regeneration, power loss caused by EGR clogging, and DEF system failures are all "common problems" with this engine. Many owners choose a Delete Kit to completely solve these issues.
This article will give you a full breakdown of the 2018 Ram 2500 delete kit - including DPF, EGR, and DEF deletes - to help you understand the kit types, the special technical requirements of the 2018 model year, key buying points, and the legal risks that must be taken seriously.
Why Do 2018 Ram 2500/3500 Owners Consider Deletes?
1. Completely Solve Frequent DPF Regeneration and Failure Issues
The DPF (Diesel Particulate Filter) is designed to capture carbon particles in the exhaust, but the problem is that it needs forced regeneration every 300–700 miles—raising exhaust temperatures extremely high to burn off soot buildup. Each regeneration consumes extra fuel, which seriously affects fuel economy over time.
Replacing a new DPF can cost as much as $800–$1,200. Cleaning services are cheaper ($200–$400), but they only treat the symptoms, not the root cause. With a delete pipe and proper tuning, the DPF can be completely removed and the regeneration program disabled, eliminating the "regeneration in progress, do not turn off engine" frustration for good.
2. Eliminate EGR System Carbon Buildup and Fault Codes
The EGR (Exhaust Gas Recirculation) system reintroduces part of the exhaust gas back into the intake manifold to lower combustion temperatures and reduce NOx emissions. However, the soot and heat carried by these exhaust gases enter the intake system, causing carbon buildup on the EGR valve and coolant leaks inside the EGR cooler. Replacing an EGR cooler can cost as much as $3,000–$5,000. After installing an EGR delete kit, the exhaust gas circulation is completely cut off, the intake system stays clean, the engine breathes more smoothly, and power output becomes more stable.
3. Avoid DEF Urea System Failures and Maintenance Costs
After 2013, the 6.7L Cummins added an SCR system that requires regular DEF refilling. However, DEF lines and nozzles are prone to crystallization, while heater failures and sensor failures can trigger Limp Mode, leaving you unable to drive normally. DEF itself is also an ongoing expense (about $2–3 per gallon), and improper refilling can accelerate system damage. After the delete, you no longer need to buy DEF, worry about crystallization or speed limitation, and the engine is completely freed from emissions system restrictions.
4. Improve Throttle Response and Fuel Economy
The emissions system essentially "chokes" the engine. After a delete, the released potential is easy to see:
- Throttle response improves directly: Without DPF backpressure and EGR dilution, the turbo spools earlier, and takeoff and mid-range acceleration feel noticeably lighter.
- Horsepower and torque increase significantly: With professional tuning, it is easy to gain 60–120 HP and 150–200 lb-ft of torque, while aggressive tuning can even exceed 150–250 HP.
- Fuel economy improves noticeably: Real-world results show that after eliminating DPF regeneration fuel consumption, mixed driving can improve by 3–5+ MPG, and long highway driving can reach more than 6 MPG.
- Exhaust Gas Temperature (EGT) drops: Under load, EGT can drop by 200–300°F, effectively protecting the turbocharger and piston components and extending engine life.
2018 6.7L Cummins Delete Kit Types Explained
1. DPF Delete Kit
Removes the restrictive Diesel Particulate Filter (DPF) and catalytic converter, replacing them with a straight-through exhaust pipe. This can significantly improve exhaust flow and reduce backpressure. It must be used with a tuner to disable regeneration and prevent the check engine light from coming on.
2. EGR Delete Kit
Removes the EGR valve and EGR cooler, preventing soot-filled exhaust gases from re-entering the intake system. The kit usually includes CNC-machined block-off plates and coolant reroute hardware to seal the system.
3. DEF/SCR Delete
Eliminates the SCR system and the need to refill DEF. All 6.7L Cummins engines after 2013 are equipped with a DEF system, and the delete kit removes the SCR catalytic converter and related components.
4. CCV Delete/Reroute
Reroutes crankcase ventilation away from the intake manifold, preventing oil vapor from entering the turbo and intercooler and keeping the intake tract clean.
5. Full Delete Kit
Solves all of the above emissions system issues at the same time and is the ultimate solution for maximum performance and reliability (off-road/race use only). It removes the DPF, EGR, and DEF/SCR at the same time. Some full delete kits also include a CCV reroute, but a full delete must be paired with a custom tune to avoid engine fault codes.
Special Requirement for 2018 Models: Bypass Cable
The 2018 Ram is equipped with a Security Gateway Module (SGW/Security Gateway Module), which prevents programming and tuning the vehicle ECU through the OBD port. Therefore, for 2018+ Cummins applications, a Bypass Cable must be used during tuning.
The function of the Bypass Cable is to temporarily bypass the security gateway module, allowing your tuning device (such as EFI Live, EZ Lynk, etc.) to communicate with the ECU and write tune files. Without this cable, you simply cannot complete the tuning—and after installing delete hardware without tuning, the vehicle will immediately trigger a check engine light and enter Limp Mode.
When purchasing, be sure to confirm whether the kit includes a Bypass Cable, or purchase a bypass cable compatible with 2018+ Ram separately.
Removing the DPF + EGR + DEF/SCR systems at the same time is the ultimate solution for maximum performance (off-road/race use only). Some full kits also include a CCV (Crankcase Ventilation) reroute. A full delete requires a custom tune to avoid engine fault codes.
Recommended Product: Suncent 2013-2018 6.7L Cummins All-in-One Kit
For owners who want a one-step solution, the Suncent 2013-2018 6.7L Cummins Dodge/Ram All-in-One Kit is recommended. This full kit includes:
| Component | Description |
| EGR Delete Kit | Includes EGR valve and cooler delete hardware |
| DPF Delete Exhaust Pipe | 4-inch Race Pipe, no muffler |
| PCV/CCV Reroute Kit | Crankcase ventilation reroute |
| Mini Maxx V2 Tuner | Preloaded delete tune files |
The kit uses stainless steel and precision-machined aluminum alloy materials, making it durable and easy to install. It fits 2013-2018 Ram 2500/3500 6.7L Cummins.
⚠️ 2018 Model Special Reminder: For 2018 and newer Cummins models, an SGM bypass cable must be used during tuning. It is not included in the standard kit and must be purchased separately.
Recommended pairing: 2018-2024 6.7L Cummins SGM Bypass Cable
This bypass cable is compatible with multiple tuning platforms. It is plug-and-play and requires no cutting or splicing. It fits 2018-2024 Ram 2500/3500/4500/5500 6.7L Cummins.
Best Delete Kit for 2018 6.7 Cummins: What to Look For
When choosing the best delete kit for your 2018 Ram 2500/3500, you need to consider the following factors:
1. Kit Completeness
A good full delete kit should include:
- DPF/DEF delete exhaust pipe
- EGR delete kit
- CCV reroute kit
- Tuner (the tuner is an essential core component of a delete kit.)
2. Exhaust System Material
Choose T-409 or T-304 stainless steel exhaust pipes for better corrosion resistance and longer service life. A 5-inch turbo-back exhaust pipe can provide maximum airflow and works best with a delete kit.
3. Brand and Reputation
Choose a brand with good user reviews and after-sales support. DynoVox, iFJF, SPELAB, BC Diesel, Tuner Depot, and others are common brands in the market. Reading real feedback from other owners can help you make a better decision.
4. Confirm 2018-Specific Components
A Bypass Cable must be included or purchased separately—this is a hard requirement for tuning 2018 models.
Confirm that the tuner is compatible with your PCM version—provide your VIN to the seller before purchasing for verification.
Legal and Warranty Risks for 2018 Ram 2500 Delete Kit
Federal Law (EPA)
Deleting emissions equipment is illegal in the United States. Under the Clean Air Act, tampering with emissions control devices is explicitly prohibited.
State Emissions Testing
Strict states (delete will definitely fail): California, Colorado, New York, Pennsylvania, and other states with strict emissions testing.
No-testing states (relatively safer): Florida, Ohio, Michigan, and many other states without emissions testing.
Owners in states such as Virginia have reported that dealers refused to accept deleted vehicles, and that deleted vehicles cannot pass state inspection.
Warranty and Resale Impact
Deleting will void the powertrain warranty, and dealers may refuse CPO certification. Resale value may also drop significantly—many buyers avoid vehicles with deleted emissions systems.
Disclaimer
The information in this article is for educational reference only. Delete kits are for off-road/race use only. Be sure to check local laws before modifying.
Conclusion
A delete kit for the 2018 Ram 2500 6.7L Cummins can significantly improve performance, fuel economy, and engine reliability—DPF/EGR/DEF deletes paired with professional tuning can completely solve the headaches caused by the emissions system. However, the 2018 model has its own special requirements: a Bypass Cable is essential, and PCM version compatibility must be confirmed in advance.
Before deciding to modify, be sure to carefully consider:
- Does your state require emissions testing?
- Is your vehicle still under warranty?
For off-road/race use, a SuncentAuto full delete kit paired with EZ Lynk tuning can deliver the best performance improvement. For daily street driving, think twice before proceeding.
