HP Tuners ECM Upgrade Kit (ECM-00-L5P-K) provides a fast, in-garage solution to unlock tuning and diagnostics for 2017–2023 Chevy Silverado and GMC Sierra 2500/3500 6.6L Duramax (L5P) trucks. Designed for DIY enthusiasts and professionals, this E41 ECM upgrade requires no ECM removal, no reprogramming, and no relearns, minimizing risk and downtime. Complete the upgrade in about 20 minutes, then gain full access to HP Tuners VCM Suite for industry-leading scanning, data logging, and calibration, with ~6-minute write times when paired with an MPVI2+ (Pro) or MPVI3.
Key Features
Fits 2017–2023 6.6L Duramax L5P (E41 ECM)
No ECM removal, relearns, or reprogramming
~20-minute in-vehicle upgrade
Full VCM Suite scan, log, read, edit & write
Requires MPVI2+ Pro or MPVI3
1 to 2 Business Days
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