SOTF Tune 2017-2019 Duramax L5P for HP Tuners race This new option for tuning

This new option for tuning the 2019 - 2023 L5P & L5D Duramax simplifies the tuning process

From Towing up to GVWR to all out performance

Smoother running engine & power delivery

Instantly switch between 5 power levels while driving

75 in W x 5

SOTF Tune 2017-2019 Duramax L5P for HP Tuners race This new option for tuningTake performance to the next level on your 2017, 2018, 2019 Chevy Silverado or GMC Sierra with our Switch on the Fly Tuning for the L5P Duramax. Our tunes are purpose built and the switch on the fly (SOTF) option gives you the power to select from five different power levels on the fly using your factory steering wheel controls or the HP Tuners Diesel Switch. Gone are the days of spending 10 minutes changing your tune when you need to tow. The switch