2021 RAM 1500 TRX trucks pair a supercharged 6.2L Hemi V8 with a factory PCM that, like the rest of the RAM lineup, ships locked against reprogramming. The PCM-0R-939AA replaces it with a version HP Tuners has already modified to remove that restriction, enabling VCM Editor tuning on the TRX.

HP Tuners PCM-0R-939AA Installation Notes:

• Matched to the 2021 RAM 1500 TRX and its supercharged 6.2L Hemi V8.
• Installs in place of the factory-locked PCM to enable VCM Editor tuning.

Emissions Disclaimer

HP Tuners designs and manufactures software and hardware tools for vehicle diagnostics, scanning, logging, calibration, and data acquisition purposes. The authorized use of such tools is to bring a motor vehicle into emissions compliance and/or to maintain emissions compliance, as well as for use on competition/racing and other exempted vehicles. HP Tuners does not create or provide tunes or pre-made calibrations.

HP Tuners' Terms of Use, policies, and agreements mandate that users shall comply with all local, state, and federal laws. In using HP Tuners software and hardware tools, you are representing, warranting, and agreeing not to use, employ or allow any HP Tuners tools to operate as a defeat device or to violate emissions compliance in any manner whatsoever. You further represent warrant and agree that the HP Tuners tools shall only be used by manufacturers, calibration businesses, and professionals to develop emissions-compliant and/or exempted calibrations.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART