Vehicle Speed Sensor
Most late model automobiles are factory equipped with a Vehicle Speed Sensor (VSS) and the On-Board Dyno™ can often use this sensor. The speed transducer of an existing on-board data acquisition system can often be used as well. In either case, there will be no need to purchase a separate speed sensor.
Vehicles with mechanical speedometers will require the installation of a speed sensor in series with the speedometer cable. Vehicles that do not have a speedometer but use stock type OEM transmissions will require the speed sensor to be installed directly on the transmission. Vehicles that use transmissions that do not provide for any type of speed pick-up will require a special speed transducer. This special transducer may be in the form of a sensor that monitors the passing reflective tape on the drive shaft or the passing of metal parts on a wheel or brake rotor.
To determine which speed sensor is suitable for your car, review the above Vehicle Speed Sensor Selection Guide and select a model that is appropriate for your vehicle and speedometer system. DynoLab® can provide recommendations for special applications.