Segment:
Performance Compact Sedan/Wagon
Target Audience:
Enthusiasts, performance drivers, rally sport fans, owners seeking to maintain or modify their vehicle.
Key Competitors:
Mitsubishi Lancer Evolution, Subaru WRX (standard model), Ford Focus RS, Volkswagen Golf GTI/R32.
Performance Focus:
All-wheel-drive (Symmetrical AWD), turbocharged engine, rally-bred performance heritage.
Handling Dynamics:
Driver-focused chassis, responsive steering, performance-tuned suspension.
Engine Mechanical:
Engine overhaul, assembly, disassembly, inspection, troubleshooting, repair of all internal components (pistons, rings, rods, crankshaft, camshafts, valves, timing belt/chain, etc.).
Engine Performance:
Turbocharger system, intercooler, intake and exhaust manifolds, fuel injection, ignition system, engine management system (ECU), emissions control.
Transmission:
Manual transmission (TY757) repair, clutch system, driveline, differentials (front, center, rear), propeller shaft, drive axles.
Brakes:
Hydraulic system, ABS, brake calipers, rotors, pads, master cylinder, brake lines, parking brake, bleeding procedures.
Suspension:
Front and rear suspension components (struts, springs, control arms, bushings, sway bars), alignment specifications, troubleshooting.
Steering:
Power steering system, steering rack, tie rods, steering column, troubleshooting.
Electrical System:
Battery, charging system (alternator), starting system (starter), lighting, fuses, relays, wiring diagrams, diagnostic connectors (OBD-II).
HVAC:
Heating, ventilation, and air conditioning system (compressor, condenser, evaporator, refrigerant handling, controls).
Body And Chassis:
Body panel removal and installation, doors, windows, interior trim, seats, bumpers, underbody, corrosion protection.
Interior:
Dashboard, instrument panel, seats, seat belts, airbags (SRS), interior trim components, audio system, switches.
Scheduled Maintenance:
Oil changes, filter replacements, fluid checks and changes, spark plug replacement, timing belt inspection/replacement (if applicable), brake service, tire rotation.
Troubleshooting:
Systematic diagnostic procedures for common and uncommon faults, symptom-based troubleshooting guides, fault code interpretation.
Repair Procedures:
Step-by-step instructions for component removal, repair, overhaul, and reinstallation for all major vehicle systems.
Diagnostic Procedures:
ECM diagnostic trouble codes (DTCs), sensor testing, actuator testing, fuel pressure testing, compression testing.
Diagnostic Tools:
Specifications for required diagnostic tools, scan tools, multimeters, pressure gauges, and specialized Subaru tools.
Torque Specifications:
Precise torque values for all critical fasteners, including engine components, suspension, brakes, and body panels.
Clearances And Tolerances:
Factory specifications for engine component clearances, bearing play, valve lash, and other critical tolerances.
Wiring Diagrams:
Comprehensive electrical system wiring diagrams for all circuits, including component locations and wire colors.
Oil Change Interval Est:
Every 3,000-5,000 miles or 3-6 months, depending on driving conditions (severe vs. normal).
Engine Oil Capacity Est:
5.8 US quarts (with filter) of 5W-30 synthetic oil.
Engine Oil Type:
SAE 5W-30 Synthetic API SG/SH/SJ/SL/SM certified
Transmission Fluid Type:
API GL-4 or GL-5, SAE 75W-90 (manual transmission)
Differential Fluid Type:
API GL-5, SAE 75W-90 (front and rear differentials)
Coolant Type:
Subaru Super Coolant (Blue) or equivalent ethylene glycol-based coolant with Subaru's additive package.
Piston Ring Land Failure:
Common issue in EJ257 engines, especially when modified or driven hard without proper maintenance. Manual will detail inspection and potential fixes.
Head Gasket Leaks:
While less prevalent than on some other Subaru models, it's a potential concern. Manual will cover diagnosis and replacement.
Clutch Wear:
High-performance nature can lead to faster clutch wear, particularly with aggressive driving. Manual covers inspection and replacement.
