Abstract: A central controller and modular device is provided, a central controller and modular device comprising one or more internal components from the group consisting of a data converter, a central controller, an engine performance controller, and a module replacement controller and a plurality of connection ports and connection lines along an exterior of the central controller and modular device wherein the connection ports and connection lines from the group consisting of one or more power connection ports and ground connection ports for powering one or more of the internal components, one or more data communication ports, data communication lines and engine output ports.