BMW’s fly-by-wire, EML throttle control was introduced in 1988 with the 750iL BMW and its 12-cylinder M70 B50 engine. The same engine is found in 850 models, also with EML (electronic throttle control). Although simple in concept – open throttle to speed up engine, or close throttle to slow down engine – electronic throttle control is in reality quite complex. It is linked to various controls units which interact with the EML computer to control throttle angle. These control units are: DME, EML, ABS/ASC+T, and EGS. The instrument cluster is also connected to the EML because it supplies a vehicle-speed signal. Integration of these control units provides total vehicle control during driving.