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Home >> Subaru >> 2018 >> WRX Base >> Repair and Diagnosis >> Engine Mechanical >> Exhaust System (Except For STI) >> Center Exhaust Pipe >> Installation

Center Exhaust Pipe: Installation

  1. Set the center exhaust pipe (front) together with turbocharger upper stay (A), and install stud bolts (3 places) to the turbocharger by using the TORX. socket E10.
    NOTE: Use a new gasket.

    Tightening Torque:

    14.7 N.m (1.5 kgf-m, 10.8 ft-lb)

    G09480711
  2. Temporarily tighten the nuts (3 places) which secure the center exhaust pipe (front) to the turbocharger together with the turbocharger upper stay (A).
    NOTE: Use a new self-locking nut.
    G09480713
  3. Using ST, install the nut (1 place) which secures the center exhaust pipe (front) to the turbocharger.
    NOTE: Use a new self-locking nut.

    ST 18283AA010

    WRENCH ADAPTER

    Tightening Torque:

    CALCULATION FORMULA
    T = L/(120 mm (4.72 in) + L) x 42.5 N.m (4.3 kgf-m, 31.3 ft-lb)
    T: Tightening torque
    L: Effective length of torque wrench
    NOTE: If the effective length of the torque wrench used is unknown, consult the manufacturer of the torque wrench.
    G09480714
    G09480715
  4. Temporarily tighten the nuts (3 places) which secure the center exhaust pipe (front) to the turbocharger together with the turbocharger stay (A).

    Tightening Torque:

    42.5 N.m (4.3 kgf-m, 31.3 ft-lb)

    G09480713
  5. Install the bolt which secures the turbocharger stay, and install the exhaust pipe cover (A) to the center exhaust pipe (front).

    Tightening Torque:

    T1: 7.5 N.m (0.8 kgf-m, 5.5 ft-lb)

    T2: 33 N.m (3.4 kgf-m, 24.3 ft-lb)

    G09480717
  6. Install the center exhaust pipe (rear) and temporarily tighten the bolt which holds center exhaust pipe (rear) to the hanger bracket.
    • CVT model
      G09480666
    • MT model
      G10267120
  7. Install the bolts, springs, and nuts which secure the rear exhaust pipe to the center exhaust pipe (rear).
    NOTE: Use a new gasket.

    Tightening Torque:

    18 N.m (1.8 kgf-m, 13.3 ft-lb)

    G09480665
  8. Install the nuts which secure the center exhaust pipe (front) to the center exhaust pipe (rear).
    NOTE: Use a new gasket.

    Tightening Torque:

    42.5 N.m (4.3 kgf-m, 31.3 ft-lb)

    G10267117
  9. Tighten the bolts which hold center exhaust pipe (rear) to the hanger bracket.

    Tightening Torque:

    35 N.m (3.6 kgf-m, 25.8 ft-lb)

    • CVT model
      G09480683
    • MT model
      G10267139
  10. Lower the vehicle.
  11. Install the exhaust pipe stay (B) and water pump pulley cover (A) to the turbocharger stay and water pump, and install the bolts which secure the water pump pulley cover (A) and exhaust pipe stay (B) to the turbocharger stay.

    Tightening Torque:

    T1: 19 N.m (1.9 kgf-m, 14.0 ft-lb)

    T2: 33 N.m (3.4 kgf-m, 24.3 ft-lb)

    G09480722
  12. Lift up the vehicle.
  13. Connect the connector on the rear oxygen sensor to the engine wiring harness, and connect the ground cable to the exhaust pipe cover.

    Tightening Torque:

    7.5 N.m (0.8 kgf-m, 5.5 ft-lb)

    G10267114
  14. Secure the front oxygen (A/F) sensor harness to the water pump pulley cover with the clip (A), and connect the front oxygen (A/F) sensor connector to the engine wiring harness.
    G09480660
  15. Install the under cover. Ref. to EXTERIOR/INTERIOR TRIM>Front Under Cover>INSTALLATION .
  16. Lower the vehicle.
  17. Connect the ground terminal to battery sensor. Ref. to NOTE>NOTE>BATTERY .
  18. Install the collector cover. Ref. to INTAKE (INDUCTION) (EXCEPT FOR STI)>Collector Cover>INSTALLATION .