Where is the big dipper throttle?

The throttle valve is located behind the air filter element of the intake system and in front of the intake manifold.

Throttle is the throat of the engine, which can control the intake of the engine. When the driver presses the accelerator pedal, he actually controls the throttle opening instead of directly controlling the fuel injection quantity. When the throttle opening becomes larger and the sensor detects that the amount of air entering the engine increases, the ecu will command the fuel injection system to increase the fuel injection amount.