If you are running RealDash on same computer with the game, see this post first:
Localhost connections on Windows 10/11 - General / Bugs and troubleshooting - RealDash Forum
- Find your RealDash device’s IP address.
- Open file “C:\Users<YOUR USER NAME>\Documents\My Games\GRID 2\hardwaresettings\hardware_settings_config.xml” with notepad.
- Find line “”
- Edit it to something like this “”
- Save the file.
After setting the correct source in RealDash using same port number the game should send you car data when the race starts.