TCM Tuning to match this ECM tuning can be ordered by clicking HERE
NWT 3 single tune package for 24-25 L5P Duramax. These are single tunes, the E46 ECM does not support SOTF.
Choose three power levels (single tunes, you must re-load the tune to change power levels):
- 50HP TOW
- 80HP LIGHT TOW
- 120HP STREET
- 200HP RACE / MAX EFFORT
Requirements:
- ECM must be unlocked by HP Tuners through their send-in service
- Windows-based computer + wifi connection for tune installation and management.
- 8 HPTuners Credits
- HP Tuners MPVI3/4 Device
- You must email your stock read file, and MPVI serial number to sales@dieselpartdeals.com - if you are ordering the MPVI from us, you will need to wait to do this step once your new device arrives.
ECM Unlock Service is required to tune the 2024+ L5P Duramax ECM.
Spare ECMs will NOT BE ACCEPTED, no exceptions. Only the original ECM from your vehicle is acceptable for this service.
Shipping address for send-in services: HP Tuners [ATT: GM E42 ECM Service (L5P, Global B)], 700 Eastwood Ln, Buffalo Grove, IL 60089
ECMs with broken “LOCKING” tabs or connectors WILL NOT be accepted for upgrades.
THE ECM DOES NOT RETURN TUNED, ONLY UNLOCKED. YOU STILL NEED TO TUNE THE TRUCK WITH YOUR MPVI DEVICE.