2024-2025 Duramax L5P AMDP RTD4 Custom Tune File

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 is tunes only. You’ll need an RTD4, click here for the device. MPVI2 and MPVI3 can’t be used on this truck. You will also need 8 tune credits, click here for credits.

Tuning is delivered through the HP Tuners TDN app. Your stock read goes to your tuner in the app and your tune file comes back the same way.

TDN Code: MNFS-4601

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).

• An HP Tuners RTD4 device and 8 credits are required (device and credits are NOT included).
  

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