This calibrated controller kit from Chevrolet Performance enables quicker and easier adaptation of the Chevrolet Performance LS7 Crate Engine for countless hot rod projects. It is specially programmed for retrofit installations, with features that make getting the vehicle running easier than if a production controller were used. The kit also includes hardware and components that does not typically come with a used or salvage yard engine, such as the wiring harness, mass airflow meter and electronic throttle pedal assembly, eliminating the need to source them separately! This controller system is a true stand-alone system for use in older vehicles, as all that's needed to get a vehicle running with it are power and ground sources, a 58-psi (400 kPa) fuel pump and an electric cooling fan.