I think what you are referring to is the device that connects to the OBD II data connector (like the Davis CarChip E/X with Alarm) and stores data on parameters like speed, etc so you can dnld it to your PC. The 94 Civic is pre-OBD II therefore you would have to get an OBD I compatible device, but I can't tell you if that is available. If it is, it should work. My cursory search did not reveal any.