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An electronic control unit (ECU), also known as an electronic control module (ECM), is an embedded system in automotive electronics that controls one or more of the electrical systems or subsystems in a car or other motor vehicle.
2016 - Holley HP EFI engine control unit (ECU) became standard equipment used on all cars in the NHRA's Pro Stock class, the world premier class for naturally aspirated drag cars. [29] 2018 - Holley HP EFI engine control unit (ECU) became standard equipment on the optional NT1 engine which is legal for use in NASCAR Truck Series racing.