Mounted on turbocharger module for increased output of gasoline engine. 

When the vehicle accelerates, the turbine of the turbocharger rotates at a high speed and strong compressed air flows into the engine, and then when the vehicle decelerates, the compressed air is suddenly cut off and the turbine of the turbocharger is overloaded. At this time, the valve of this product is opened and the compressed air is recirculated to function as turbo charger.