Impreza GT F4-2.5L Turbo (2009)
10) Lift up the vehicle.
11) Remove the lower side nuts (two places) that hold the center exhaust pipe on the turbocharger.
12) Disconnect the connector from the rear oxygen sensor, and remove the clip (A) holding the rear oxygen sensor harness.
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AT MODEL
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MT MODEL
13) Remove the rear exhaust pipe from center exhaust pipe.