MPVI3 Tune Files (2017-2019 Duramax L5P 6.6L)

For 2017-2019 Duramax L5P 6.6L owners looking for stronger torque, better throttle response, and serious pulling power, MPVI3 Duramax L5P 6.6L Tune Files (2017-2019) deliver real-world performance gains. Whether you're towing, daily driving, or pushing for maximum power, these tunes ensure your truck performs at its peak.

We offer:

• Single Tune – Designed for a specific power level, delivering optimized fuel efficiency, throttle response, and towing performance.

• SOTF 5 Tunes – Switch-on-the-fly between five different power levels, adjusting performance on demand based on driving conditions.

• Full Support Pack – Ongoing tuning support, allowing adjustments to match future upgrades or modifications.

Each MPVI3 Duramax L5P 6.6L Tune File (2017-2019) is built to remove weak factory limits and provide more horsepower, better shift quality, and enhanced fuel economy. These tunes allow for precise control over fueling, shifting, and torque output, giving your truck the power and efficiency it deserves.

Why Choose MPVI3 Tune Files?

✔ Maximized power and torque for 2017-2019 Duramax L5P 6.6L ✔ Refined shift points for better drivability under load ✔ Custom tuning for towing, daily driving, and performance ✔ Reliable, proven tuning with real-world results

No weak calibrations—just real performance for serious Duramax owners.

TUNING DEVICE NOT INCLUDED