How did Forrest remove the intake manifold?

How forest got into the intake manifold is as follows:

1. Open the lock nut of the fuel line on the high-pressure pump.

2. Unplug the vacuum hose on the intake valve control valve.

3. Unscrew the screw of the coolant pipe on the intake pipe and unplug the electric plug from the fuel pressure sensor.

4. Take out the air duct downward, and remove the throttle control unit and intake pipe bracket.

5. Remove the intake pipe with a wrench. The intake manifold refers to the intake pipe from the back of the carburetor or throttle body to the front of the intake port of the cylinder head.