2024-2025 L5P Duramax AMDP RTD4 Custom Tune Bundle

Fits

You must have the HP Tuners ECM Unlock Service done first. Click here for the service.

Upgrade your 2024-2025 L5P Duramax with these custom tune files. These are the custom calibrations you need to deliver serious power gains and a sharper, more responsive throttle. Designed for off-road and race applications, these tunes are built to give you a better-running truck with up to +150 HP.

Note: This package includes both the tunes and the device. Click here for just the tunes.

Part Number: 24-66D-HP-X

Power Levels

• 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.

• Five distinct power levels, from stock to +150 HP.

• Currently offers single-tune applications; SOTF functionality will be available in later releases.

• Provides smoother power, a sharper throttle response, and improved engine efficiency.

• Removes the factory speed limiter where permitted.

Requirements:

• The ECM must be unlocked by HP Tuners through their send-in service (service and unlock are NOT included in this package).