There are two eyes on the engine under two boxes of carnival intake pipes.

Both gas pipes are connected to the outlet connector behind the oil baffle of the valve chamber. The connector is directly connected to the air inlet hose through the air pipe. The mixed exhaust gas of engine oil and fuel discharged by reducing the crankcase pressure is sucked into the cylinder and burned together with atomized gasoline. The faster the rotating speed, the more crankcase exhaust gas will be discharged. The more exhaust gas enters the throttle. The pressure has increased. The other pipe connected to the valve cover is connected to the upper wastegate valve (one-way ventilation valve) and the other pipe is connected to the intake manifold. Only when the vacuum pressure in the manifold is high, the mixture in the crankcase can smoothly enter the manifold through the valve and be used, while when the vacuum pressure in the manifold is low, the intake will be less, but it cannot be sucked back.