DIESELR Tune Files – Precision Tuning for Serious Diesel Owners

DIESELR’s tune files deliver real power, stronger throttle response, and refined drivability for Cummins, Duramax, and Powerstroke trucks. Whether you need daily driving efficiency, heavy-duty towing performance, or max horsepower, these files are built for real-world results.

✔ Tested and proven tuning for 5.9L & 6.7L Cummins, all Duramax engines, and 6.0L, 6.4L, 6.7L Powerstroke
✔ ECM and TCM tuning for optimized engine and transmission performance
✔ Shift-on-the-fly tuning available for instant power adjustments

Custom DIESELR Tune Files for Every Diesel Truck

Get the right tuning for your build—optimized for power, efficiency, and reliability.

Single tune or full power level packs available
Designed for daily driving, towing, or max performance applications
Instant throttle response, better fuel control, and improved shift patterns

Shift-on-the-Fly (SOTF) Tuning Files

Fine-tune your truck’s power levels on the go with SOTF tuning.

No need to reflash—switch power levels instantly
Built for towing, performance, and fuel efficiency modes
Works with EZ Lynk, GDP Commander, HP Tuners, and MM3

DIESELR ECM & TCM Tuning Files

Full engine and transmission tuning for a smoother, more efficient, and powerful ride.

ECM tuning: Increased power, throttle response, and fuel control
TCM tuning: Optimized shift patterns and torque management
Tuning available for all major diesel platforms

Country/region

Country/region

DIESELR Commander T87A Transmission Tune File (2017-2019 Duramax L5P 6.6L)

DIESELR Commander T87A Transmission Tune File (2017-2019 Duramax L5P 6.6L)