Opcom |link| Free4all — Must Read

While "Opcom Free4all" isn't a standard industry term, if you are looking to prepare a "useful feature" for an —popularly used for Opel and Vauxhall vehicles—the most valuable addition would be a dynamic live-data logging preset .

: Monitors real-time sensor parameters, such as engine RPM, coolant temperature, and fuel trim. Opcom Free4all