SOTF Tune without hardware 2017-2019 Duramax L5P for HP Tuners Apparel EFI Live Auto Cal or

EFI Live Auto Cal or Flash Scan

Improve the performance on your 2017

and enhance performance with the CDAL439 4" down pipe from P1 Race Products

5" OD Turn Down 5" inlet 14" length

SOTF Tune without hardware 2017-2019 Duramax L5P for HP Tuners Apparel EFI Live Auto Cal orTake performance to the next level on your 2017, 2018, or 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