To remove

Undo the hose clip between the connecting hose and the turbo inlet pipe.

Fig 1: Illustration For Step 1-2-3-4-5
Courtesy of SAAB-SCANIA OF AMERICA, INC.
Unplug the connector from the mass air flow sensor.
Detach the mass air flow sensor cable from the cable clips on the top of the air collection box.
Remove the top of the air collection box by undoing the snap fasteners and the 4 screws.
Lift off the top of the air collection box.
Detach the hose from the mass air flow sensor by undoing the clip.

Fig 2: Illustration For Step 6-7
Courtesy of SAAB-SCANIA OF AMERICA, INC.
Remove the mass air flow sensor, 2 screws.