If you’ve been following the progress of Openpilot support on Rivian vehicles, you know how quickly things have evolved. In our latest video, we dive deep into where things stand now—with a focus on Lukas Loetkolben’s Longitudinal Upgrade Kit, the latest Sunnypilot fork, and how the Comma 3X performs on Gen 1 R1T and R1S models.
What’s in the Video
In this hands-on update, we cover:
- The current state of Openpilot on Rivian with and without the harness upgrade
- How the Longitudinal Upgrade Kit unlocks full acceleration and braking control
- Installing and running
sunnypilot/staging-c3-new - Fine-tuning recommended settings for the smoothest experience
- Limitations that still exist—like the 90-degree steering torque cutoff and tire-dependent handling
- A look ahead at angle-based steering and radar+vision fusion improvements