2017-2023 Duramax Peakside HP Tuners Single Tune File (PEAK-L5P-HPTUN-1723-SGL)

Note: THESE FILES NO LONGER NEED AN UNLOCK BOX TO FLASH 19+, USING AN MPVI3, YOU ARE NOW ABLE TO UNLOCK/FLASH YOUR ECM.

This includes a single custom tune file from Peakside Performance for your 2017-2023 L5P Duramax. Calibrations are delivered through the HP Tuners MPVI or RTD4 interface and are designed to maximize your truck's performance and fuel economy for the specific power level you select.

RTD4 Users: Once you’ve shared your stock read with your tuner in the TDN app, please email us. We’ll notify the tuning company and keep things moving.

Power Levels

• 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.

Part Number: PSP-17-23-DMAX-HP-SNG