Best Turbo Upgrades for Towing With a 6.7 Cummins
If you tow heavy on a regular basis, you already know the factory turbo on a 6.7 Cummins can become a weak point over time. Heat, drive pressure, sticky vanes, and sluggish response under load all start to show up once the miles pile on or tuning gets more aggressive.
The good news is you do not need a massive competition turbo to improve towing performance. In fact, the best towing setup usually keeps the factory-style variable geometry design while improving airflow, reliability, and exhaust braking.
Two of the strongest options available right now come from Black Sheep Industries
These are purpose-built upgrades for truck owners who tow hard, daily drive their trucks, and want better reliability without sacrificing spool-up or exhaust brake performance.
Why Towing Trucks Need a Different Turbo Setup
A towing turbo has a completely different job than a race turbo.
For towing, you want:
- Fast spool-up at low RPM
- Strong mid-range torque
- Controlled exhaust gas temperatures (EGTs)
- Reliable exhaust brake performance
- Lower drive pressure under sustained load
- Better durability under heat and stress
Oversized fixed geometry turbos often hurt towing manners. They can feel lazy off the line, increase turbo lag, and reduce exhaust brake effectiveness.
That is why upgraded VGT-based turbos remain one of the best solutions for working Cummins trucks.
The Sweet Spot: 63mm Compressor Upgrades
A 63mm setup hits a great balance for towing applications.
Compared to a stock charger, a properly designed 63mm turbo can provide:
- Increased airflow without excessive lag
- Cooler EGTs while pulling heavy
- Better efficiency at highway towing RPM
- Stronger top-end power
- Improved durability over tired factory units
Most importantly, it still maintains the responsiveness needed for real-world towing.
2007.5-2018 6.7 Cummins HE300VG 63mm
This upgraded HE300VG is an ideal option for third and fourth gen Ram owners who tow regularly and want more reliability than the stock Holset can deliver.
Why It Works Well for Towing
The upgraded 63mm compressor provides improved airflow while still keeping excellent spool characteristics. That means:
- Faster recovery between shifts
- Better pulling power on grades
- Lower sustained EGTs
- Strong response with trailers attached
Because it retains the variable geometry design, you also keep strong exhaust braking performance, which matters when descending hills with weight behind the truck.
A Smart Upgrade for Tuned Trucks
Many stock HE300VG turbos begin struggling once tuning and heavier loads are introduced. Common issues include:
- Sticking vanes
- Excessive shaft play
- Overspeeding under load
- Higher drive pressure
The upgraded 63mm setup helps address those concerns while supporting significantly more airflow than stock.
For most towing-focused builds, this turbo lands in the perfect middle ground between reliability and usable power.
2019-2024 6.7 Cummins TNT HE300VG 63mm
Fifth gen Cummins trucks already tow extremely well from the factory, but the TNT HE300VG 63mm takes that capability even further.
Built for Modern Towing Demands
Newer Ram trucks are heavier, quieter, and more refined than earlier generations. Owners expect smooth drivability while still demanding serious pulling power.
This turbo upgrade improves airflow and efficiency without hurting daily driving manners.
Benefits include:
- Strong low-end response
- Improved airflow under load
- Better towing efficiency
- Cooler EGT control
- Excellent exhaust brake retention
For truck owners running larger tires, added weight, or custom tuning, the TNT 63mm offers additional headroom without sacrificing drivability.
Better Reliability Under Stress
Towing creates sustained heat, and heat is what kills turbos.
A stronger upgraded VGT setup helps reduce stress during long pulls, especially when towing in hot weather or mountainous terrain.
For owners who spend serious time hooked to a trailer, that added durability can make a major difference long term.
Which Turbo Is Best for Your Truck?
Choose the HE300VG 63mm If You Have:
- A 2007.5-2018 Ram Cummins
- Mild to moderate tuning
- Frequent towing duties
- A daily-driven work truck
- A need for reliable exhaust braking
Choose the TNT HE300VG 63mm If You Have:
- A 2019-2024 Ram Cummins
- Larger tires or added vehicle weight
- Custom tuning
- Heavy RV or equipment towing
- A newer truck that needs more airflow without losing factory manners
Final Thoughts
The best towing turbo is not always the biggest turbo.
For real-world towing, drivability and reliability matter far more than peak horsepower numbers. A properly matched 63mm VGT upgrade gives your 6.7 Cummins the airflow it needs while keeping the quick response and exhaust braking that towing trucks depend on.
Both of these upgraded HE300VG options from Black Sheep Industries strike that balance extremely well.
Whether you drive a third gen, fourth gen, or fifth gen Ram, upgrading to a well-built 63mm VGT turbo can make your truck tow cooler, pull harder, and last longer under heavy load.
What is the best turbo for towing with a 6.7 Cummins?
For most towing-focused trucks, a properly sized upgraded VGT turbo like a 63mm HE300VG offers an excellent balance of spool-up, towing performance, and EGT control.
Why is a VGT turbo good for towing?
Variable geometry turbos provide faster spool-up at low RPM, improved exhaust braking, and better throttle response, making them ideal for towing heavy trailers.
Will a bigger turbo hurt towing performance?
An oversized turbo can increase lag and reduce low-end responsiveness. Proper turbo sizing is important for maintaining towing drivability.
Can a towing turbo improve fuel economy?
In some cases, yes. Improved airflow efficiency and reduced engine strain may help improve fuel economy during towing and highway driving.
What size turbo is best for a daily driven tow rig?
For many 6.7 Cummins trucks, a 63mm upgraded VGT turbo is a popular choice because it maintains quick response while supporting additional airflow and lower EGTs.
Does an upgraded turbo help lower EGTs while towing?
Yes. More efficient airflow and reduced drive pressure can help control exhaust temperatures during heavy towing conditions.
Should I upgrade my turbo if I tow frequently?
If you regularly tow heavy loads, upgrading the turbo can improve drivability, reliability, towing confidence, and heat management compared to a worn stock unit.
Can I tow with tuning and an upgraded turbo safely?
Yes, provided the tuning is properly calibrated for the turbo and fueling system. Safe towing tunes are critical for managing EGTs and maintaining reliability.
For owners looking to improve towing performance and drivability, an 63mm HE300VG turbo can provide faster spool-up, improved exhaust braking, and lower EGTs on a 6.7 Cummins. Newer trucks may benefit from the 2019–2024 TNT HE300VG 63mm upgrade for enhanced airflow and towing reliability.
Best Turbo Characteristics for Towing a 6.7 Cummins
| Turbo Feature | Why It Matters for Towing |
|---|---|
| Fast Spool-Up | Improves low RPM response when pulling heavy loads |
| Variable Geometry Design | Enhances towing drivability and exhaust brake performance |
| Improved Airflow | Helps control EGTs during long pulls and towing |
| Efficient Compressor Design | Supports better throttle response and efficiency |
| Lower Drive Pressure | Reduces engine stress under heavy load |
| Durable Bearing System | Improves reliability during frequent towing use |
| Exhaust Brake Compatibility | Maintains downhill towing control and safety |
| Balanced Turbo Sizing | Prevents excessive lag while supporting added airflow |