ECU Bridge and RPM Bridge: these two systems are needed whenever engine data are to be visualized on a display or on a SmartyCam HD video, if no recording is required.
They are compatible with G-Dash and Formula Steering Wheel 2, and of course with the SmartyCam HD on-board cameras. ECU Bridge is to be used in case the Engine Control Unit transmits data in the following hardware protocols: OBDII, CAN or RS232.
AiM has developed hundreds of different protocols, to make compatibility with virtually all ECUs possible, either stock and after market ECUs. ECU Bridge has to be properly configured with Race Studio 2 software to communicate with the different visors/cameras on one side and ECUs on the other side.
More info can be found here