BOOST is used in both the automotive and nonautomotive industries for accurate engine simulation. It has been used for modeling a wide range of engine speeds and sizes, including two-stroke and four-stroke engines. In the BOOST engine model, numerical outputs (sensors) can provide values, such as pressure, temperature, air/fuel ratio, and many more, at measuring points in the simulation model. These can be used as input to a Simulink model of the engine control unit (ECU). Signals can be passed into BOOST (actuators) to control parameters such as throttle position or vane position for a variable geometry turbocharger.