Computerized Engine Control By the early 1980s, numerous vehicles were using electronics and onboard computers to control many of the engine’s systems, such as fuel and ignition. Vehicle manufacturers had to develop ways to diagnose problems generated by the new electronic hardware found under the hood. Thus, the first OBD systems were developed by auto manufacturers as electronic systems replaced mechanical systems. The engines in today’s vehicles are mostly controlled by electronics. Sensors and actuators sense the operation of specific components (e.g., the oxygen sensor) and actuate others (e.g., the fuel injectors) to maintain optimal engine control. An onboard computer, known sometimes as a "power train control module" or an "engine control unit," controls all of these systems. With proper computer software, the onboard computer is capable of monitoring all of the sensors and actuators to determine whether they are working as intended. It can detect a malfunction or deterioration, usually before the driver becomes aware of the problem through a loss in vehicle performance or drive ability. The sensors and actuators, along with the diagnostic computer software in the onboard computer, make up what is called "the OBD system." Wasabi Racing trained technicians, equipped with the newest diagnostic and repair equipment, can conduct OBD related service.