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Aug 15, 2025
What is the Best Delete Kit for 6.7 Cummins?
If you own a 6.7 Cummins diesel truck, you may be considering a delete kit to unlock better performance, fuel efficiency, and engine longevity. Emissions systems like the DPF (Diesel Particulate Filter), EGR (Exhaust Gas Recirculation), and DEF (Diesel Exhaust Fluid) can restrict power and cause long-term reliability issues. A high-quality 6.7 Cummins delete kit removes these restrictions while optimizing your engine's performance.
But with so many options available, how do you choose the best delete kit for your 6.7 Cummins? In this guide, we'll break down the top-rated kits, key features to look for, and why a proven delete solution is worth the investment.
Why Consider a 6.7 Cummins Delete Kit?
Deleting your 6.7 Cummins offers several benefits:
- Increased Horsepower & Torque – Removing restrictive emissions components allows for better airflow and combustion efficiency.
- Improved Fuel Economy – Many users report 1-3 MPG gains after a proper delete.
- Reduced Maintenance Costs – No more clogged DPFs, failing EGR coolers, or costly DEF system repairs.
- Longer Engine Life – Eliminating soot buildup and excessive heat from the EGR system helps preserve your engine.
- Better Throttle Response & Smoother Performance – A tuned and deleted Cummins runs cleaner and stronger.
Top 5 Best Delete Kits for 6.7 Cummins
1. Full EGR & DPF Delete Kit with Tuning
🔹 Best for: Complete emissions removal with performance tuning
🔹 Includes:
- EGR delete pipe
- DPF delete pipe (or straight pipe)
- High-flow downpipe
- Custom tuning (via EFI Live, H&S, or similar)
✔ Why Choose It? A full delete with tuning ensures maximum power gains and smooth operation.
2. DPF & SCR (DEF) Delete Only Kit
🔹 Best for: Those who want to keep the EGR but eliminate DPF/DEF issues
🔹 Includes:
- DPF delete pipe
- SCR/DEF system bypass
- Optional muffler or straight pipe
✔ Why Choose It? A middle-ground option that still improves performance without a full EGR delete.
3. EGR Delete Only Kit
🔹 Best for: Reducing soot and heat without removing the DPF
🔹 Includes:
- Block-off plates
- Cooler bypass hose
- EGR valve delete
✔ Why Choose It? Helps with engine longevity while keeping emissions intact (for states with strict regulations).
4. High-Flow Downpipe & Exhaust System
🔹 Best for: Improved airflow without a full delete
🔹 Includes:
- 4" or 5" downpipe
- Mandrel-bent exhaust system
✔ Why Choose It? A good upgrade for those who want better flow but aren't ready for a full delete.
5. Race-Spec Full Delete Kit with Tuning
🔹 Best for: Maximum power (600+ HP builds)
🔹 Includes:
- Full exhaust system (no DPF/SCR)
- EGR block-off plates
- High-performance tuning files
✔ Why Choose It? Ideal for competition or extreme towing applications.
Key Features to Look for in a 6.7 Cummins Delete Kit
When shopping for a Cummins delete kit, consider:
- Material Quality – Stainless steel or aluminized steel for durability.
- Compatibility – Ensure it fits your exact 6.7 Cummins year model.
- Tuning Support – Some kits require custom tuning to avoid check engine lights.
- Reputation – Buy from trusted brands with proven results.
Where to Buy the Best 6.7 Cummins Delete Kits
For high-performance Cummins delete kits, check out DynoVox Parts. They offer proven delete kits, tuning solutions, and expert support to help you get the most out of your diesel truck.
Enjoy an Exclusive 10% Discount
As a valued reader, you can now enjoy a 10% discount on your order. Simply enter the promo code DYBL10 at checkout to unlock your savings. Whether you're upgrading your diesel performance or maintaining long-term reliability, now is the perfect time to invest in premium parts at a better price.
6.7 Cummins Delete Kit (Tuner Options Available)
Final Thoughts
The best delete kit for your 6.7 Cummins depends on your goals—whether you want maximum power, better fuel economy, or just reduced maintenance costs. A full EGR & DPF delete with tuning is the most popular choice, but partial deletes are also effective.
⚠ Note: Deleting emissions equipment may not be legal in all areas. Check local laws before proceeding.
Upgrade your 6.7 Cummins today and experience the difference a high-quality delete kit makes! 🚛💨
FAQS
1. What does a delete kit do for a 6.7 Cummins?
A delete kit removes factory emissions components such as the DPF, EGR, and DEF systems, reducing exhaust restriction, improving performance, and preventing common regeneration issues.
2. Is deleting a 6.7 Cummins worth it?
For off-road or competition use, a delete kit can increase horsepower, torque, and fuel efficiency while extending engine life by reducing soot buildup.
3. What is included in a complete 6.7 Cummins delete kit?
Most complete kits include a DPF delete pipe, EGR delete kit, block-off plates, and the required tuner for reprogramming the ECU.
4. Do I need a tuner after installing a 6.7 Cummins delete kit?
Yes, a tuner is essential to recalibrate your truck’s computer, prevent error codes, and unlock the full performance potential after deleting emissions systems.
5. How much horsepower can I gain from a 6.7 Cummins delete?
With proper tuning, gains can range from 50–100 HP and 100–200 lb-ft of torque, depending on your truck’s year and condition.
6. Will a delete kit improve fuel economy on a 6.7 Cummins?
Yes, most owners report 3–5 MPG improvements due to reduced exhaust restriction and optimized engine performance.
7. Are delete kits legal for street-driven 6.7 Cummins trucks?
No, delete kits are intended for off-road and race use only. Removing emissions equipment from a street-legal vehicle violates federal emissions regulations.
8. Which brand makes the best delete kit for 6.7 Cummins?
DynoVox is a leading choice for 6.7 Cummins delete kits, trusted for its precision engineering, high-quality materials, and exact fitment. Our kits are designed for maximum performance gains, long-term durability, and easy installation. While other brands exist, DynoVox consistently delivers superior results for serious diesel enthusiasts.
9. How long does it take to install a 6.7 Cummins delete kit?
Installation time varies from 4 to 8 hours depending on the kit type, tools available, and mechanical experience.
10. Can I install a 6.7 Cummins delete kit myself?
Yes, experienced DIY mechanics can install these kits with basic tools, but professional installation is recommended for proper fitment and tuning.
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