Introduction: Should You Consider an EGR Delete?
If you're running a 6.7L Cummins engine—especially in a Ram 2500 or 3500—you’ve likely heard about EGR removal more than once. Whether it’s performance forums, diesel shops, or industry buddies, EGR delete kits are one of the most talked-about upgrades.
Why? Because the factory Exhaust Gas Recirculation (EGR) system, while designed to reduce emissions, often causes more headaches than it's worth. It leads to soot buildup, higher intake temps, reduced throttle response, and long-term reliability concerns.
For off-roaders, heavy haulers, and serious diesel owners, deleting the EGR system becomes more than just a tweak—it’s a strategic performance upgrade. Especially for older 6.7 Cummins models with higher mileage, removing the EGR is a move toward cleaner, more efficient combustion.
But let’s be clear: EGR removal isn’t a one-size-fits-all solution. It's also not street-legal in most regions due to EPA regulations. That’s why this guide exists—to help you make an informed, responsible decision.
Whether you're seeking more power, improved fuel efficiency, or simply fewer trips to the mechanic, this guide will walk you through everything you need to know about EGR removal for your 6.7 Cummins.
What Is an EGR Delete—and What Does It Mean for Your 6.7 Cummins?
Understanding the EGR System
The EGR (Exhaust Gas Recirculation) system is designed to reduce nitrogen oxide (NOx) emissions by recirculating a portion of exhaust gases back into the intake. In theory, this lowers combustion temps and emissions.
But in the real world—especially for diesel trucks like the 6.7L Cummins—it often becomes a liability.
The system introduces soot and carbon back into the intake path. Over time, that gunk builds up on the intake valves and EGR cooler, restricting airflow and reducing engine performance. It’s a slow killer of power and efficiency.
What Happens When You Remove It?
An EGR delete kit lets you block off or fully remove the EGR cooler and valve. This prevents dirty exhaust gases from re-entering your intake, keeping the combustion cycle cleaner and more efficient.
In a 6.7 Cummins, that means:
l Cooler intake temps
l Reduced soot buildup
l Better throttle response
l Less regen frequency (if paired with a DPF delete)
Some users also report improved fuel economy and a smoother idle, although this varies depending on the tuning and driving style.
The Catch
While the benefits are clear for off-road use or vehicles operated in non-EPA-regulated environments, it's essential to note that this mod is not legal for on-road use in most U.S. states or Canada. That’s why EGR deletes are sold for “off-road use only.”
You’ll also need proper ECU tuning to prevent check engine lights and ensure the system doesn’t throw error codes after the hardware is removed.
In short: EGR removal on a 6.7 Cummins is about optimizing performance—but it comes with responsibility.
Pros and Cons of EGR Removal on a 6.7 Cummins
✅ The Benefits
1. Improved Engine Efficiency
By eliminating hot exhaust gases from the intake, the engine breathes cooler, cleaner air. This helps combustion run more efficiently, especially under heavy load or towing.
2. Reduced Soot Buildup
No more recycled soot means your intake, valves, and turbo components stay much cleaner. In the long term, this can prevent performance losses and carbon-related issues.
3. Enhanced Throttle Response
With better airflow and less restriction, you’ll notice quicker pedal response, particularly useful in towing or high-load scenarios.
4. Fewer Regens (if paired with a DPF delete)
Less soot = fewer regenerations of the diesel particulate filter (DPF). This reduces fuel waste and downtime during forced regens.
5. Lower Exhaust Temps
Some users report slightly cooler EGTs post-delete, which contributes to engine longevity under extreme conditions.
The Risks & Downsides
1. EPA Violation
Let’s not sugarcoat it—removing your EGR system is illegal on public roads in most regions. The EPA enforces steep fines for tampering with emissions. Use off-road trails only, or be aware of the risks.
2. Warranty Issues
Dealers will void your powertrain warranty if they detect an EGR delete. If your truck’s still under coverage, think carefully.
3. CEL & Fault Codes Without Tuning
If you don’t pair the delete with proper ECU tuning, expect check engine lights, limp mode, and persistent fault codes.
4. Inspection Trouble
Annual emissions testing or visual inspections (in states like California and New York) will flag the missing EGR and result in a failed inspection for your truck.
Deleting the EGR system on your 6.7 Cummins is a high-reward mod—but it’s not a free lunch. Know your state laws and ensure you’re using the truck in compliance.
What You’ll Need: EGR Delete Kits and Tools for the 6.7 Cummins
Recommended EGR Delete Kits
When shopping for an EGR delete kit for your 6.7L Cummins, ensure it’s specifically designed for your exact model year. The engine layout has changed slightly over the years, and compatibility is a key consideration.
Top brands diesel techs trust:
SPETUNER – Budget-friendly, solid fitment, widely available.
DPF/DEF/EGR Delete for Ram 2019-2021 6.7 Cummins All-in-One Kit
6.7 cummins delete kit
$1399.00
Buy Now
Tools You’ll Need in the Shop
A typical EGR delete job takes 2–4 hours with standard shop tools. Here's what you’ll want on hand:
Socket and wrench sets (preferably metric and SAE)
Torque wrench
Pliers and hose clamp tools
Coolant drain pan (you’ll lose some coolant during removal)
Gasket scraper and brake cleaner
Shop towels and gloves
Flashlight or shop light (some areas are tight)
l Optional: ECU tuner or monitor (to reprogram and monitor post-delete)
Pro Tip
Have replacement coolant and possibly a new thermostat ready. It’s a good time to refresh these while the system is open, especially on higher-mileage trucks.
And don't forget—always disconnect your batteries before you begin. Safety first.
Legal Disclaimer and Environmental Responsibility
Know the Law Before You Delete
Let’s be direct—EGR delete is illegal for street-driven vehicles in the U.S. and Canada under EPA and provincial regulations. The Clean Air Act prohibits tampering with emission control systems, and penalties can be steep.
Many states conduct annual emissions tests, OBD scans, or even visual inspections. If your EGR system is removed or disabled, you could fail inspection, receive fines, or face registration issues.
This guide and the products referenced are intended strictly for:
l Off-road
l Track-only
l Farm or industrial equipment
l Non-registered vehicles
We don't condone or recommend bypassing emissions systems for road use. Compliance is your responsibility.
The Environmental Side
EGR systems reduce NOx emissions, a key contributor to smog and respiratory issues. Deleting the system increases those emissions, especially if paired with DPF removal.
While many diesel owners delete for reliability and performance reasons, it’s still important to understand the environmental trade-offs. If you're operating in rural areas, on private land, or off-road, the impact may be minimal, but it's not zero.
✅ Responsible Delete
If you go down this route, do it right:
l Use high-quality components
l Pair with proper tuning
l Keep the vehicle off public roads
l Be honest about your setup when selling or servicing the vehicle
Doing it responsibly protects your engine, the industry’s reputation, and keeps enforcement off your back.
Final Thoughts: Should You Delete the EGR on Your 6.7 Cummins?
EGR removal isn’t just a performance upgrade—it’s a decision that affects how your truck runs, how it's maintained, and how it’s used.
For off-road, towing, or work applications, deleting the EGR on a 6.7 Cummins can offer:
l Better throttle response
l Reduced soot buildup
l Lower exhaust temps
l Improved reliability over time
But it's not a no-brainer. You’ll need:
l A quality delete kit
l ECU tuning to keep everything running right
l Awareness of legal limitations
If you're still under warranty or live in a state with strict emissions enforcement, weigh your options carefully. The gains are real, but so are the risks.
Ready to Take the Next Step?
✅ Shop EGR Delete Kits for your exact model year [https://spetuner.com/collections/egr-delete-kit]
✅ Browse Tuners that support EGR and DPF deletes [https://spetuner.com/collections/tuner]
✅ Download Our Free Installation Checklist to make the process easier [https://spetuner.com/pages/spetuner-instruction-guide]
Want a smoother, cleaner-running Cummins that does what you ask without fighting you? This might be your answer—just be sure you’re doing it for the right reasons and in the right setting.
