2020-2022 Duramax Emissions Off Power Package
The MPVI3 is the industry standard for tuning your 6.6L L5P. If you're looking for our recommendation for tuning your truck, this is it.
Please be sure to input your VIN and Modifications at the bottom of the page so we can have the custom tuning written as soon as possible.
CSS Tuning Package
- Stock Delete
AMDP Tuning Package
Unlock your L5P's true potential with AMDP Custom Tuning. These tune files will range from Stock Delete up to 150HP Race tunes.
- HPTuners MPVI3
- 8 Credits
- 5 Custom Tune Files
- Canbus Harness (NOX Plugs)