Waste Gate Actuator

Remove the collector cover.
Remove the front exhaust pipe. Refer to FRONT EXHAUST PIPE .
Remove the exhaust pipe cover.

Fig 1: Locating Exhaust Pipe Cover Mounting Bolts
Courtesy of SUBARU OF AMERICA, INC.
Remove the boost hose (B) from the waste gate actuator (A) of the turbocharger, and connect the Mighty Vac to the waste gate actuator (A).

Fig 2: Identifying Turbocharger Boost Hose And Waste Gate Actuator
Courtesy of SUBARU OF AMERICA, INC.
Pressurize slowly with the Mighty Vac, and check the pressure when the control rod stroke (D) becomes 2 mm (0.08 in). If it is not within the standard, replace the turbocharger assembly.
CAUTION: Do not pressurize over 85.2 kPa (0.87 kgf/cm² , 12.35 psi) to prevent damaging the waste gate actuator.

Operating pressure (control rod stroke 2 mm (0.08 in)):

Standard

70.8 - 76.7 kPa (0.72 - 0.78 kgf/cm ² , 10.27 - 11.12 psi)
After inspection, install the related parts in the reverse order of removal.
Tightening torque:

6.4 N.m (0.7 kgf-m, 4.7 ft-lb)

Fig 3: Locating Exhaust Pipe Cover Mounting Bolts
Courtesy of SUBARU OF AMERICA, INC.