L5P Diesel Switch HP Tuners

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 as an option.  Download  the files to 3D print brackets for easy integration.
Switch on the Fly (SOTF)– GM L5P and Cummins CM2450 and CM2350 Applications
HP Tuners is proud to offer the world’s first integrated ECM map-switching solution for the GM E41 ECM and the Dodge Cummins CM2450 and CM2350 ECM.
This custom Operating System (OS) code modification is available for 2017+ Chevrolet/GMC trucks with the 6.6L L5P and the 2013-2018 CM2350 and 2019-2024 CM2450 Dodge Cummins trucks with the 6.7L turbo diesel. 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.
L5P SOTF USER GUIDE    CUMMINS SOTF USER GUIDE
GM L5P ECM Upgrade
Before you get started with SOTF and Diesel Switch for your L5P truck, an HP Tuners’ upgraded E41 ECM is required for use. The L5P ECM Service from HP Tuners gives you the power to tune your 2017+ Chevrolet Silverado and/or GMC Sierra 2500/3500 6.6L Duramax and utilize other HP Tuners hardware.
Take advantage of our upgrade service option to calibrate, log, and scan via your vehicle’s OBDII port. Your E41 ECM will then be compatible with your HP Tuners interface device and VCM Suite. For more information, please visit the  L5P ECM page
Cummins CM2350/CM2450 Smart Cable
To get started with SOTF and Diesel Switch for your 2018+ CUMMINS truck, an HP Tuners’ Dodge Smart Access Cable is required for use. The Smart Access Cable from HP Tuners gives you the power to tune your Dodge Cummins and utilize other HP Tuners hardware. For more information, please visit the  Dodge Smart Access Cable  page.