6.7 Powerstroke Supporting Mods for Towing & Power
A turbo upgrade adds airflow. It does not add fuel, tuning, cooling or transmission capacity, and on a 2017–2019 6.7 Powerstroke the gains come from all of them working together. This is what typically needs attention alongside a turbo upgrade, in the order most builds tackle it.
Quick answer: Tuning matched to the turbo comes first, followed by fuel supply, intake and charge piping, transmission tuning and gauges to monitor EGT and boost. For heavy towing, cooling and monitoring matter as much as peak power.
1. Tuning Matched to the Turbo
Tuning is required to reach an upgraded turbo's rated power. On a VGT truck it also controls how the vanes are positioned at every load and speed, which decides spool, drive pressure and EGTs. A tune written for the factory turbo will not get the best from a larger one. Make sure your tuner knows exactly which turbo is on the truck.
2. Fuel Supply
More fuel needs a supply system that keeps up. A lift pump or supply upgrade keeps the high-pressure pump fed under sustained load, and good filtration protects the injection system. Address fuel supply before adding significant fuelling.
3. Intake and Charge Piping
- Intake: a free-flowing intake reduces restriction ahead of the larger compressor.
- Charge piping: upgraded intercooler piping holds higher boost without ballooning or blowing off couplers.
- Intercooler system: the 6.7 Powerstroke uses an air-to-water intercooler on its own cooling loop. Keep that system healthy, especially for towing in summer heat.
4. Transmission Tuning
The 6R140 handles a lot from the factory, but more torque calls for shift points, line pressure and converter lockup tuned to match. Transmission tuning is part of making a turbo upgrade drive well under load.
5. Monitoring
An EGT gauge and a boost gauge are cheap insurance. On a long grade with a trailer, they tell you what the truck is doing before something gets hot enough to cause damage.
Priorities by Build
| Build | Priorities |
|---|---|
| Daily driver, light towing | Tuning, intake, gauges |
| Heavy towing (fifth wheel, gooseneck) | Tuning, gauges, fuel supply, transmission tuning, intercooler system health |
| Tuned street truck | Tuning, fuel supply, charge piping, transmission tuning |
| Off-road competition | All of the above, sized for the power target |
Habits That Protect the Turbo
- Cool down after towing. A minute or two of idle after a hard pull lets turbo temperatures fall before shutdown.
- Change oil on schedule. On 2011–2019 trucks engine oil also moves the turbo's vanes.
- Use the truck under load. Regular loaded driving and the exhaust brake keep the vanes moving and carbon from building up.
The Turbo
The TNT 63.5/62 drop-in for 2017–2019 F-250 to F-550 trucks is rated to 650 HP with factory emissions equipment in place and up to 750 HP in off-road competition builds, both with tuning and the supporting modifications above. See the 6.7 Powerstroke Turbo Upgrades guide for how it compares with the factory turbo, and 6.7 Powerstroke Turbo Power Limits for when the stock turbo runs out.
Frequently Asked Questions
What mods do I need with a 6.7 Powerstroke turbo upgrade?
At minimum, tuning matched to the turbo. Most builds also add a fuel supply upgrade, a free-flowing intake, upgraded charge piping, transmission tuning and EGT and boost gauges.
Do I need a lift pump with an upgraded turbo?
Not for the turbo itself, but once fuelling goes up to use the extra airflow, a lift pump or supply upgrade keeps the injection system fed under sustained load.
What are the most important mods for towing?
Tuning, EGT and boost monitoring, fuel supply, transmission tuning and a healthy intercooler cooling system. Sustained load is harder on a truck than short bursts of peak power.
Should I let my truck idle after towing?
Yes. A minute or two of idle after a hard pull lets the turbo cool before shutdown, which protects the bearings and the vane mechanism.
Power ratings on this page are quoted in crank horsepower (HP). Figures previously published in wheel horsepower (WHP) have been restated using our in-house tested conversion — the hardware and its capability are unchanged.