🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX Year: 2005 Codes Chassis Code: GDB Engine Code Primary: EJ205 👋 Introduction Market Position Segment: Performance Compact Sedan/Wagon Target Audience: Enthusiasts, tuners, DIY mechanics, and professional workshops specializing in Subaru vehicles. Competitive Analysis Key Competitors: Mitsubishi Lancer Evolution, Honda Civic Si, Volkswagen GTI, Ford Focus RS (in spirit, though often higher class) Key Features Performance Focus: Designed for the performance-oriented WRX model, covering its turbocharged engine and AWD system. All Wheel Drive: Detailed information on Subaru's Symmetrical All-Wheel Drive system and its maintenance. Turbocharging: In-depth coverage of the EJ205 turbocharged engine's unique requirements and maintenance. 📋 Manual Details Coverage Areas General Coverage: Complete vehicle repair and service Specific Systems: Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, Electrical, HVAC, Body, Emissions Page Count Total Pages: 3000+ Manual Type Type: Workshop Service Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, disassembly, cylinder head, pistons, crankshaft, lubrication system, cooling system Engine Management: Fuel injection, ignition system, emissions control, ECU diagnosis, turbocharger system Transmission Drivetrain: Manual transmission (TY754), clutch, driveshafts, differentials (front, center, rear), AWD system Suspension Steering: Front and rear suspension components, struts, springs, bushings, power steering system Brakes: Brake system components, hydraulic lines, calipers, rotors, ABS system Electrical: Wiring diagrams, lighting, charging system, starting system, instrument cluster, accessories HVAC: Air conditioning, heating, ventilation systems Body Chassis: Body panels, interior trim, glass, doors, chassis maintenance Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug replacement, fluid checks and changes Diagnostics Troubleshooting: Diagnostic trouble codes (DTCs), symptom-based troubleshooting guides Repair Rebuild: Component removal, installation, overhaul, and rebuilding procedures Specification Data: Torque specifications, clearances, tolerances, diagnostic values Technical Depth Depth: Comprehensive: from basic maintenance to complete engine and transmission rebuilds, including advanced diagnostics and electrical schematics. 📊 Manual Specifications File Format Readability: High-resolution PDF, searchable text Printability: Printable pages for physical use Binding Type Binding: N/A (Digital PDF format) Paper Type Paper Type: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Type: Horizontally Opposed (Boxer), turbocharged, intercooled Displacement: 2.0 Liters (1994 cc) Bore X Stroke: 92.0 mm x 75.0 mm Compression Ratio: 8.5:1 Valve Train: DOHC, 16 valves Redline Rpm: 7000 RPM Performance Horsepower Hp: 227 hp @ 5600 rpm Torque Lb Ft: 250 lb-ft @ 3200 rpm Fuel System Type: Sequential Electronic Fuel Injection (Multi-point) Fuel Type: Unleaded gasoline, premium octane (91+ RON recommended) Ignition System: Distributorless Electronic Ignition (Coil-on-plug) 🔧 Transmission Standard Type: 5-speed Manual Transmission (TY754 series) Optional Type: None for WRX model Features Drivetrain Layout: Symmetrical All-Wheel Drive (AWD) Center Differential: Viscous coupling limited-slip center differential Front Differential: Open differential Rear Differential: Viscous coupling limited-slip rear differential 📐 Dimensions Exterior Length: 173.8 inches (4415 mm) Width: 68.1 inches (1730 mm) Height: 56.1 inches (1425 mm) Wheelbase: 100.1 inches (2540 mm) Front Track: 58.3 inches (1480 mm) Rear Track: 58.1 inches (1475 mm) Weights Curb Weight: 3131 lbs (1420 kg) - Sedan Gross Weight Rating: 4233 lbs (1920 kg) Towing Capacity: Not Recommended 🛡️ Safety Features Ratings NHTSA Front Crash Test: 4/5 Stars (Driver and Passenger) NHTSA Side Impact Front: 4/5 Stars (Front Passenger) IIHS Moderately Overlap Front: Good Active Features ABS: Standard Anti-lock Braking System (ABS) Traction Control: Standard All-Wheel Drive system enhances traction Brake Bias: Driver-adjustable front/rear brake bias (often via aftermarket) - manual covers stock setup. Passive Features Airbags: Dual front airbags, available side airbags Seatbelts: 3-point front and rear seatbelts, pretensioners Body Structure: Reinforced chassis with energy-absorbing crumple zones 💡 Technology Features Infotainment Audio System: Factory AM/FM/CD player, typically with 4 or 6 speakers. Manual covers wiring and speaker replacement. Navigation: Optional factory navigation system (rare on WRX models of this year). Manual may cover its integration. Driver Assistance Cruise Control: Standard cruise control system. Manual details its operation and components. Connectivity Power Accessories: Power windows, power locks, power mirrors. Manual includes detailed wiring diagrams. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,750 miles or 3.75 months, or 7,500 miles/7.5 months for synthetic oil (refer to manual for exact conditions). Air Filter Replacement: Every 15,000 miles or 15 months. Spark Plug Replacement: Every 30,000 miles (NGK PFR6B recommended). Timing Belt Replacement: Every 90,000 miles or 7.5 years. **Critical for EJ205 engine health.** Fluid Specifications Engine Oil: SAE 5W-30 Synthetic (API SG, SH, SJ, or SL). Capacity: 4.5 US qt (4.3 L) with filter. Coolant: Subaru Super Coolant (Blue) or equivalent silicate-free, extended-life coolant. 50/50 mix with distilled water. Capacity: ~7.7 US qt (7.3 L) Transmission Fluid: GL-4 Hypoid Gear Oil, SAE 75W-90. Capacity: ~2.1 US qt (2.0 L) Rear Differential Fluid: GL-5 Hypoid Gear Oil, SAE 75W-90. Capacity: ~0.8 US qt (0.75 L) Brake Fluid: DOT 3 or DOT 4 brake fluid. Known Issues Piston Ringland Failure: A known potential issue in EJ205 engines, particularly with aggressive tuning or...