Chaos Custom Tuning MPVi4 Transmission Tune File (2020+ Duramax L5P 6.6L)
A standalone transmission calibration for the 2020-and-newer L5P Duramax, built for HP Tuners MPVI4 flashing. Revised shift points, line pressure s...
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Product Description
A standalone transmission calibration for the 2020-and-newer L5P Duramax, built for HP Tuners MPVI4 flashing. Revised shift points, line pressure strategy, and torque management matched to a tuned engine — because an extra 100+ horsepower means nothing if the transmission can't deliver it cleanly.
TCM file only. Flashed via TDN with your MPVI4.
- Fitment: 2020+ GM 6.6L Duramax L5P
- Includes: Transmission (TCM) tune file, delivered electronically
- Required: HP Tuners MPVI4 (sold separately)
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