Manifold Absolute Pressure Sensor: Removal

Remove the collector cover.
Disconnect the ground cable from battery.
Disconnect the manifold pressure sensor connector.

Fig 1: Identifying Manifold Pressure Sensor Connector
Courtesy of SUBARU OF AMERICA, INC.
Remove the manifold pressure sensor and the filter and hose from intake manifold.

Fig 2: Locating Manifold Pressure Sensor Mounting Bolt
Courtesy of SUBARU OF AMERICA, INC.