Custom tune package for 24-25 L5P Duramax. These are single tunes, the E46 ECM does not support SOTF.
Select from five power levels, ranging from stock to an impressive 150 horsepower gain, tailored for everything from daily driving to heavy-duty tasks.
- Level 1: 30 HP over stock – Ideal for improved fuel efficiency and light towing.
- Level 2: 60 HP over stock – Enhanced power for moderate towing and daily performance.
- Level 3: 90 HP over stock – Balanced for aggressive driving and light towing.
- Level 4: 120 HP over stock – High-performance tune for demanding street driving.
- Level 5: 150 HP over stock – Maximum power for extreme performance and racing applications.
Requirements:
- ECM must be unlocked by HP Tuners through their send-in service
- Windows-based computer and a smartphone for tune installation and management.
- 8 HPTuners Credits
- HP Tuners RTD4 device for tune delivery and application
ECM Unlock Service is required to tune the 2024-2025 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 RTD DEVICE.