2019-2021 Cummins RTD4 & MPVI3 Tune Files

Northern Tuning is proud to release our all-new RTD4 and MPVI3 tune files for the 2019–2021 Cummins platform, delivering unmatched convenience, performance, and reliability. With the advanced HP Tuners TDN app network, you can now flash your truck directly from your phone—no laptop, no cables, no hassle.

Key Features:

• Flash Directly From Your Phone – No laptop or USB cables required. All tuning is done via Bluetooth through the HP Tuners TDN app.

• Seamless Switch on the Fly (SOTF) – Forget expensive $130 toggle switches; change tune levels instantly using your cruise control buttons.

• Wide Range of Dyno-Tested Calibrations – From maximum GVW tow tunes for safe, reliable hauling to maximum-effort performance tunes for peak power output.

Whether you’re looking to maximize towing efficiency or unleash full performance potential, Northern Tuning’s Cummins MPVI3 and RTD4 tunes deliver proven results with modern convenience.

Notes:  you will need a Cummins Bypass cable found here 

2019-2021 Model year Cummins require 6 Credits for flashing which can be found here