HP Tuners GM E41 ECM Services (L5P) | 2017-2023 6.6L Duramax L5P

Prepare your 2017-2023 6.6L Duramax L5P for custom tuning with the HP Tuners GM E41 ECM Upgrade Service. Whether you need to purchase an upgraded ECM or have your factory ECM upgraded, HP Tuners offers a reliable solution that unlocks tuning capabilities for your truck.

For many 2018-2023 model-year applications, the ECM can be upgraded directly through the OBD-II port, eliminating the need to remove and ship the ECM. Earlier applications or certain configurations may require a send-in service.

HP Tuners performs all ECM upgrades to ensure compatibility with supported tuning software and hardware.

Features:

• Enables tuning for GM E41 ECM-equipped L5P Duramax trucks
• Available as a new upgraded ECM or an upgrade service for your existing ECM
• Many 2018-2023 models can be upgraded through the OBD-II port
• Professional upgrade performed by HP Tuners
• Designed for compatibility with HP Tuners tuning software

Important Notes:

• ECMs with damaged or broken locking tabs or electrical connectors will not be accepted for upgrade services.
• Send-in services require removal and shipment of the factory ECM unless your application supports OBD-II upgrading.