Engine Management SMP Engine Management divisions manufacture and distribute a full line of engine management related products, including ignition and emission parts, on-board computers, ignition wires, battery cables and fuel system parts Late model vehicles are highly computer controlled to reduce emissions, maximize fuel economy and improve consumer comfort. The various control systems in vehicles are interrelated and controlled by multiple computers that constantly monitor vehicle performance through a myriad of sensors located throughout the vehicle. Based on information received, the computers adjust the vehicle performance through a series of valves, switches and motors. SMP manufactures nearly all the high technology critical components for late model vehicles, including distributorless ignition system (DIS) control modules; oxygen sensors; exhaust gas recirculation (EGR) valves; high energy and coil-on-plug coils; fuel injectors and pressure regulators; a wide range of anti-lock brake, temperature, camshaft, crankshaft, knock, MAP and throttle position sensors; along remanufactured on-board computers and mass air flow sensors.