2017+ GM Duramax L5P HP Tuners SOTF Switch

Hardware 6-position rotary switch for HP Tuners’ L5P Switch on The Fly OS

Change maps at the turn of a switch.

Diesel Switch by HP Tuners lets you power up from a stock calibration to one of five custom maps with the turn of a switch. Pair with HP Tuners’ Switch on the Fly OS for complete control and performance of your diesel.

Diesel Switch features:

• 5’ OBDII pass-through cable.
• Knurled aluminum switch knob and position dial.
• Six-position rotary switch.

There are many possible mounting solutions for the Diesel Switch in your truck’s cabin.  HP Tuners offers two OBDII port mounting brackets, the files can be downloaded from HP Tuners to 3D print brackets for easy integration

Switch on the Fly (SOTF)– GM L5P Applications

HP Tuners is proud to offer the world’s first integrated ECM map-switching solution for the GM E41 ECM.

This custom Operating System (OS) code modification is available for 2017+ Chevrolet/GMC trucks with the 6.6L L5P and L5D. SOTF can store the stock calibration plus five additional maps simultaneously. Keep your hands on the wheel and select your map with the OEM cruise-control buttons. Change maps on the fly without stopping to re-flash your ECM.