HP Tuners L5P Unlocked E41 ECM

Get your 2017+ Chevrolet Silverado and GMC Sierra 2500/3500 6.6L Duramax ready for tuning! Choose one of two options to upgrade your L5P E41 ECM for tuning: Purchase or Upgrade.

**ECM may not have any broken tabs, broken plastic, & must be in good working order or it will be returned.**

Optimize your GM L5P Truck Performance with HP Tuners Unlock the potential of your 2017+ Chevrolet Silverado and GMC Sierra 2500/3500 6.6L Duramax with the L5P ECM Service by HP Tuners.

This service grants you the capability to fine-tune your vehicle’s performance.

Choose from two calibration, logging, and scanning methods through your vehicle’s OBDII port: Upgrade or Purchase. Both options provide an E41 ECM compatible with and preparable for tuning using the MPVI2 or a newer device along with the VCM Suite (BETA).

Upgrade Service
Opt for this send-in upgrade service to modify your existing or additional E41 ECM for integration with the latest version of VCM Suite. You're required to remove your ECM, send it to HP Tuners, and receive it back ready for tuning with VCM Suite (BETA). Viewing HP Tuners' removal tutorial is advised.

Benefits of the L5P ECM Upgrade Service include:

• Elimination of the need for IMMO relearn*
• Elimination of the need for crank relearn*
• Elimination of the “Replace ECM” function*

*Provided the ECM is reinstalled in the original vehicle. For spare ECMs, follow all provided reprogramming and relearning instructions. Please note a service window of 1-3 business days, excluding shipping durations.

Be aware that this option necessitates sending your ECM to HP Tuners for the upgrade.

New ECM Purchase
Need an upgraded E41 ECM without delay? Purchase a new, already upgraded E41 ECM to avoid the wait associated with sending in your original controller. This option suits those looking to quickly get their vehicles tuned and on the road.

Installation of the new E41 ECM follows specific instructions provided on HP Tuners website.

To tune your GM E41 ECM (L5P) vehicle with HP Tuners, follow these steps:

1. Choose either the Upgrade or Purchase option.
2. Download the most recent VCM Suite BETA at no cost.
3. Post-upgrade, acquire (8) Universal Credits to license your ECM.
4. Ensure you possess an MPVI2, MPVI2+, or MPVI3 interface.