2017-2023 GM Duramax L5P HP Tuners MPVI Custom Tuning

HP Tuners exclusively presents our L5P Modified ECM Purchase, giving you the power to tune your 2017+ Chevrolet Silverado / GMC Sierra 2500/3500 6.6L Duramax. You now also have the option to either purchase an HP Tuners Modified ECM or send us your original ECM and we will exchange it for a HP Tuners modified one. Both options give you full access to calibrate, log and scan via the OBD2 port with your MPVI3 and VCM Suite!

L5P/L5D Modified ECM Purchase
This option allows you to purchase an already Modified ECM from us, and you keep your original ECM. Remember, do NOT send us your ECM.

• ECM (E41) License: 6 Universal Credits

L5P/L5D Other Controllers
In addition to our L5P E41 ECM support, you can also license the following

• TCM (T87A) License: 4 Universal Credits

Currently ECM files are as follows

0hp, 45hp, 75hp, 90hp, 120hp, 150hp, 180hp