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Home >> Subaru >> 2021 >> WRX Base >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Engine Intake System (Induction) And Turbocharger (2.0L) >> Intake Duct >> Installation >> Intake Duct No. 2

Intake Duct No. 2

  1. Set the air by-pass valve to the intake duct No. 1, and install the intake duct No. 2 to the intake manifold.
    G10266553Courtesy of SUBARU OF AMERICA, INC.
  2. Install the bolt which secures the intake duct No. 2 to the turbocharger.
    NOTE:
    • Use new O-rings.
    • Be careful not to pinch the O-ring.
    • Check that the air by-pass valve is firmly inserted into the intake duct No. 1.

    Tightening torque: 

    16 N.m (1.6 kgf-m, 11.8 ft-lb)

    G11266618Courtesy of SUBARU OF AMERICA, INC.
  3. Lift up the vehicle.
  4. Engage the clip which secures the air by-pass valve to the intake duct No. 1.
    G11266617Courtesy of SUBARU OF AMERICA, INC.
  5. Connect the vacuum hose (A) to the intake duct No. 1, and connect the vacuum hose (B) to the air by-pass valve.
    G11266616Courtesy of SUBARU OF AMERICA, INC.
  6. Connect the PCV pipe assembly to the intake duct No. 1.
    NOTE: Make sure that the blow-by diagnosis connector is connected securely.
    G11266610Courtesy of SUBARU OF AMERICA, INC.
  7. Install the under cover. Refer to EXTERIOR/INTERIOR TRIM>FRONT UNDER COVER>INSTALLATION .
  8. Lower the vehicle.
  9. Install the radiator sub fan and fan motor. Refer to COOLING (W/O STI)>RADIATOR SUB FAN AND FAN MOTOR>INSTALLATION .
  10. Install the intercooler. Refer to INTAKE (INDUCTION) (W/O STI)>INTERCOOLER>INSTALLATION .
  11. Install the air intake duct. Refer to INTAKE (INDUCTION) (W/O STI)>AIR INTAKE DUCT>INSTALLATION .
  12. Connect the ground terminal to battery sensor. Refer to NOTE>NOTE>BATTERY .
  13. Install the collector cover. Refer to INTAKE (INDUCTION) (W/O STI)>COLLECTOR COVER>INSTALLATION .
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