Intake (induction) (sti Engine) Subaru Impreza WRX GD/GG рестайлинг 2

Identifying Air Cleaner Components. Scheme 467

Identifying Intake Duct Components. Scheme 468

Identifying Intercooler Components. Scheme 469

Identifying Turbocharger Components. Scheme 470

Identifying Intercooler Water Spray Components. Scheme 471

CAUTION

1. Wear work clothing, including a cap, protective goggles and protective shoes during operation.
2. Remove contamination including dirt and corrosion before removal, installation or disassembly.
3. Keep the disassembled parts in order and protect them from dust and dirt.
4. Before removal, installation or disassembly, be sure to clarify the failure. Avoid unnecessary removal, installation, disassembly and replacement.
5. Be careful not to burn your hands, because each part on the vehicle is hot after running.
6. Be sure to tighten fasteners including bolts and nuts to the specified torque.
7. Place shop jacks or rigid racks at the specified points.
8. Before disconnecting electrical connectors of sensor or units, be sure to disconnect the ground cable from battery.

Scheme 472

Scheme 473

1. Disconnect the ground cable from battery.
2. Disconnect the connector from mass air flow and intake air temperature sensor. (Scheme 472): Identifying Connector For Mass Air Flow And Intake Air Temperature Sensor
3. Loosen the clamp (A) which connects the air intake boot and intake duct.
4. Remove the clip (B) from air cleaner upper cover. (Scheme 473): Identifying Clip And Air Cleaner Upper Cover
5. Remove the air cleaner upper cover.
6. Remove the air cleaner element.

INSTALLATION

Install in the reverse order of removal.

Note. Before installing the air cleaner upper cover, align the holes with protruding portions of air cleaner lower case, then secure the upper cover to the lower case.

Securing Upper Cover To Lower Case. Scheme 474

INSPECTION

Replace it if excessively damaged or dirty.

Scheme 475

1. Disconnect the ground cable from battery.
2. Disconnect the connector from mass air flow and intake air temperature sensor. see scheme 9: Identifying Connector For Mass Air Flow And Intake Air Temperature Sensor
3. Loosen the clamp (A) which connects the air intake boot and intake duct.
4. Remove the clip (B) from air cleaner upper cover. see scheme 10: Identifying Air Cleaner Upper Cover Clip
5. Remove the air cleaner upper cover.
6. Remove the air cleaner element.
7. Remove the air cleaner lower case. (Scheme 475): Locating Air Cleaner Cover

Install in the reverse order of removal.

Tightening torque: 33 N.m (3.4 kgf-m, 24.6 ft-lb)

Note. Before installing the air cleaner upper cover, align the holes with protruding portions of air cleaner lower case, then secure the upper cover to the lower case.

Inspect for cracks and loose connections.

REMOVAL

Remove the bolts which install the air intake duct on front side of body.

Locating Bolts For Air Intake Duct. Scheme 476

Install in the reverse order of removal.

Tightening torque: 7.5 N.m (0.76 kgf-m, 5.5 ft-lb)

1. Inspect for cracks and loose connections.
2. Inspect that no foreign objects are mixed in air intake duct.

Scheme 477

1. Disconnect the ground cable from battery.
2. Remove the intake manifold. < Ref. to «REMOVAL»(/subaru/impreza-wrx/gdgg-2-2005-2007/remont/fuel-system/#fuel-injection-fuel-systems-sti), Intake Manifold. >
3. Remove the sensor, engine harness and fuel pipe attached to intake manifold. < Ref. to «DISASSEMBLY»(/subaru/impreza-wrx/gdgg-2-2005-2007/remont/fuel-system/#fuel-injection-fuel-systems-sti), Intake Manifold. >
4. Remove the intake duct from intake manifold. (Scheme 477): Locating Intake Duct For Intake Manifold

Install in the reverse order of removal.

Tightening torque: 19 N.m (1.9 kgf-m, 13.7 ft-lb)

Scheme 478

Scheme 479

Scheme 480

Scheme 481

Scheme 482

1. Disconnect the air by-pass hoses from intercooler. (Scheme 478): Locating Air By-Pass Hoses
2. Remove the air by-pass valve from intercooler. (Scheme 479): Locating Air By-Pass Valve
3. Remove the bolts which secure the intercooler to bracket. (Scheme 480): Locating Bolts For Intercooler Bracket (Scheme 481): Locating Bolts For Intercooler Bracket
4. Remove the intercooler air duct from turbocharger.
5. Remove the intercooler from throttle body. (Scheme 482): Locating Intercooler Air Duct

Install in the reverse order of removal.

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

DISASSEMBLY

Remove the intercooler ducts from intercooler.

Locating Intercooler Ducts. Scheme 483

ASSEMBLY

Assemble in the reverse order of disassembly.

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

Scheme 484

Scheme 485

Scheme 486

Scheme 487

Scheme 488

Scheme 489

1. Set the vehicle on a lift.
2. Disconnect the ground cable from battery.
3. Remove the center exhaust pipe. < Ref. to «REMOVAL»(/subaru/impreza-wrx/gdgg-2-2005-2007/remont/exhaust/#exhaust-h4dotc-engine), Center Exhaust Pipe. >
4. Lower the vehicle.
5. Disconnect the turbocharger joint pipe from turbo-charger. (Scheme 484): Locating Turbocharger Joint Pipe
6. Disconnect the engine coolant hose which is connected to coolant filler tank. (Scheme 485): Locating Engine Coolant Hose
7. Loosen the clamp which secures the turbocharger to intake duct. (Scheme 486): Locating Clamp
8. Loosen the flare joint of oil inlet pipe, and disconnect the flare joint.
9. Remove the oil inlet pipe from turbocharger. (Scheme 487): Locating Oil Inlet Pipe
10. Disconnect the engine coolant hose.
11. Remove the turbocharger bracket. (Scheme 488): Locating Turbocharger Bracket
12. Disconnect the oil outlet hose from pipe. (Scheme 489): Locating Oil Outlet Hose
13. Take out the turbocharger from engine compartment.

1. Connect the oil outlet hose to outlet pipe. see scheme 34: Locating Oil Outlet Hose
2. Install the turbocharger to intake duct.
3. Install the oil inlet pipe to turbocharger, and connect the flare joint. Tightening torque: Union bolt 16±1.5 N.m (1.6±0.15 kgf-m, 11.8±1.1 ft-lb) Flare joint 20±2.0 N.m (2.00.2 kgf-m, 14.8±1.5 ft-lb) see scheme 36: Locating Oil Inlet Pipe
4. Install the turbocharger joint pipe to turbocharger. NOTE: Replace the gasket with a new one. Tightening torque: 35 N.m (3.6 kgf-m, 25.8 ft-lb) see scheme 37: Locating Turbocharger Joint Pipe
5. Connect the engine coolant hose.
6. Install the turbocharger bracket. Tightening torque: 33 N.m (3.4 kgf-m, 24.6 ft-lb) see scheme 38: Locating Turbocharger Bracket
7. Connect the engine coolant hose which is connected to coolant filler tank. see scheme 39: Locating Engine Coolant Hose
8. Lift-up the vehicle.
9. Install the center exhaust pipe. < Ref. to «INSTALLATION»(/subaru/impreza-wrx/gdgg-2-2005-2007/remont/exhaust/#exhaust-h4dotc-engine), Center Exhaust Pipe. >

1. Remove the air by-pass valve from intercooler. see scheme 40: Locating Air By-Pass Valve
2. Disconnect the air by-pass hoses from air bypass valve.

Install in the reverse order of removal.

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

Locating Bypass Valve. Scheme 490

Scheme 491

1. Set the vehicle on a lift.
2. Remove the air intake duct. < Ref. to «REMOVAL»(/subaru/impreza-wrx/gdgg-2-2005-2007/remont/mechanical/#intake-induction-sti-engine), Air Intake Duct. >
3. Remove the air cleaner lower case. < Ref. to «REMOVAL»(/subaru/impreza-wrx/gdgg-2-2005-2007/remont/mechanical/#intake-induction-sti-engine), Air Cleaner Case. >
4. Remove the resonator chamber mounting nut on right side of engine compartment. (Scheme 491): Locating Resonator Chamber Mounting Nut
5. Lift-up the vehicle, and then remove the front wheel RH.
6. Remove the front mud guard RH.
7. Remove the resonator chamber from the inside front fender. see scheme 43: Locating Resonator Chamber

Install in the reverse order of removal.

Tightening torque: 7.5 N.m (0.76 kgf-m, 5.5 ft-lb)

1. Inspect for cracks and loose connections.
2. Inspect that no foreign objects are mixed in resonator chamber.

Locating Resonator Chamber. Scheme 492

Scheme 493

1. Disconnect the ground cable from battery.
2. Remove the trunk room trim. < Ref. to «REMOVAL»(/subaru/impreza-wrx/gdgg-2-2005-2007/remont/exteriorinterior-trim/#exteriorinterior-trim), Trunk Room Trim. >
3. Disconnect the water tank connector. (Scheme 493): Locating Water Tank Connector
4. Remove the two water tank installation bolts. (Scheme 494): Locating Water Tank Installation Bolts
5. Remove the hose between body and water tank, then remove the water tank.

Install in the reverse order of removal.

Tightening torque: 6.0 N.m (0.61 kgf-m, 4.4 ft-lb)

1. Make sure the hose is not deformed, damaged, cracked or clogged.
2. Make sure the water tank is not damaged or cracked.

Scheme 494

1. Open the front hood.
2. Disconnect the connecting part of hose.
3. Push the clip of nozzle upward with the clip pressed by fingers from inside of front hood. see scheme 48: Locating Nozzle Clip

Install in the reverse order of removal.

Make sure the hose and nozzle are not deformed, damaged, cracked or clogged.

See also:
• REMOVAL
• REMOVAL
• REMOVAL
• REMOVAL