2017-2023 Duramax L5P Peakside HP Tuners SOTF Tune Package

This is the SOTF Tune Package. If you want the Single Tune Package, please click here.

This package includes the HP Tuners MPVI4, 4 universal HP Tuners credits and the Peakside Performance tune files. Already own an HP Tuners device? Order the tune files on their own instead.

Note: THESE FILES NO LONGER NEED AN UNLOCK BOX TO FLASH 19+, USING AN MPVI3 OR NEWER (THE INCLUDED MPVI4 WORKS), YOU ARE NOW ABLE TO UNLOCK/FLASH YOUR ECM.

Get the ultimate flexibility with Shift-on-the-Fly (SOTF) custom tuning from Peakside Performance for your 2017-2023 Duramax. These SOTF files are delivered through the HP Tuners MPVI or RTD4 interface, allowing you to switch between multiple power levels instantly to match your driving conditions. SOTF tuning is designed to maximise your truck's performance and fuel economy.

RTD4 Users: Your stock read goes to your tuner in the TDN app and your tune file comes back the same way.

Part Number: MPV-PEAK-L5P-HPTUN-1723-SOTF

• HP Tuners MPVI4 Blank Device (M04-000-00)
• 4 Universal HP Tuners Credits
• Peakside Performance SOTF Tune custom tune files (PEAK-L5P-HPTUN-1723-SOTF)

• Modified Stock
• +45 HP
• +75 HP
• +90 HP
• +120 HP

Note: Higher Power levels can be written with the proper supporting modifications. Please state the desired HP level and all supporting modifications when submitting your request.

• Default Access: SOTF tuning automatically defaults to the Cruise Control Method, accessed via your steering wheel controls. (Read the User Guide Here)
• Toggle Switch Option: If you prefer a manual toggle switch for SOTF control, the toggle switch is sold separately and listed under Add-Ons.

• SOTF functionality for instant switching between 5 power levels.
• MPVI interface allows for direct ECM unlock/flash (no separate unlock box required).
• Multiple performance levels to match your driving needs and modifications.
• HP Tuners MPVI4 device and credits included
  • Compatible with MPVI2, MPVI3, & MPVI4 Devices
• Stock reads and INFO logs required before files are built
• Designed for superior driveability and fuel economy.

• Credits Required: 4 Universal HP Tuners Credits are Required to Flash (included in this package).
• MPVI Users: We require a stock FICM read with HP Tuners if using an MPVI.

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