Can the throttle bypass of Haima 323 engine be adjusted at will?

Hello. You can't just tune it. When idling, the throttle valve is closed and air passes through the bypass channel. Idle speed control is realized by adjusting the amount of air flowing through the bypass channel through idle speed adjusting screws and idle air regulators. Idle air conditioner is generally controlled by ECU. When the engine warms up at a low temperature, the passage of the idle air conditioner is opened to provide the air needed for warming up the intake manifold. At this time, the engine speed is higher than the normal idle speed, which is called fast idle speed. With the increase of engine coolant temperature, the idle air regulator gradually reduces the opening of the bypass passage, the amount of bypass air and the engine speed to normal idle speed.