🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX STI Year: 2005 Generation Generation Code: GD/GG Generation Designation: Second Generation (GDB/GGB for STI) 👋 Introduction Market Position Segment: Performance Compact Sedan/Wagon Target Audience: Enthusiasts, performance car owners, DIY mechanics, professional technicians Competitive Analysis Competitors: Mitsubishi Lancer Evolution, Subaru WRX (base model), Mitsubishi Eclipse GT, Ford Focus SVT Key Features Differentiating Features: Symmetrical All-Wheel Drive, turbocharged Boxer engine, rally heritage, Driver Controlled Centre Differential (DCCD) on STI models Value Proposition Manual Value: Provides authoritative, factory-level repair and maintenance information for accurate and efficient servicing of the 2005 Impreza WRX STI. 📋 Manual Details Coverage Areas Model Variants Covered: RS, WRX STi, WRX Sport, Hatchback Engine Variants Covered: 2.5L H4 (EJ257 for STI), 2.0L H4 (EJ205 for WRX) Page Count Estimated Page Count: Approximately 3000+ pages (typical for comprehensive factory service manuals) Manual Type Type: Factory Service Repair Manual (Digital) Language Language: English Format Format: Digital (likely PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, disassembly, overhaul, cylinder head, piston, crankshaft, camshafts, timing belt/chain, lubrication system, cooling system Engine Performance: Fuel injection, ignition system, turbocharging, intercooler system, emission control systems Transmission Drivetrain: Manual transmission (TY757 for STI, TY756 for WRX), clutch system, all-wheel drive system (DCCD for STI), driveshafts, differentials Suspension: Front suspension (MacPherson strut), rear suspension (Multi-link), steering system, shock absorbers, springs Brakes: Brake system components (calipers, rotors, master cylinder, ABS), hydraulic system, parking brake Electrical: Wiring diagrams, battery, alternator, starter, lighting system, audio system, power windows, security system Body Exterior: Body panel removal/installation, doors, hood, trunk, bumpers, glass, trim Body Interior: Dashboard, seats, interior trim, HVAC system, airbags Dccd System: Specific procedures for diagnosing and servicing the Driver Controlled Centre Differential (DCCD) system on STI models. Turbocharger System: Detailed inspection, repair, and replacement procedures for the turbocharger and associated plumbing. HVAC System: Diagnosis and repair of the heating, ventilation, and air conditioning system, including refrigerant handling and component replacement. Fuel System Diagnostics: Procedures for testing fuel pump pressure, injector flow rates, and diagnosing fuel delivery issues. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks and top-offs, tune-ups Troubleshooting: Diagnostic procedures, symptom charts, fault code interpretation, common problems and solutions Repair: Detailed step-by-step repair instructions for all major systems and components Diagnostics: OBD-II system diagnostics, sensor testing, actuator testing Specifications: Torque specifications, clearances, fluid capacities, electrical resistance values Wiring Diagrams: Detailed electrical wiring schematics for all vehicle systems, aiding in diagnostic and repair of electrical faults. Torque Specifications: Precise torque values for all critical fasteners, ensuring proper assembly and preventing component damage. Wheel Alignment: Specifications and procedures for performing wheel alignment adjustments. Body And Frame: Information on body repairs, frame alignment, and corrosion prevention. Technical Depth Depth: Comprehensive, from basic maintenance to complete engine and transmission rebuilds, advanced diagnostics Diagnostic Tools: Information on using Subaru's diagnostic tools (e.g., Subaru Select Monitor) and common scan tools. Rebuild Procedures: Step-by-step instructions for complete engine and transmission rebuilds, including part specifications and assembly sequences. 📊 Manual Specifications File Format File Type: PDF (Portable Document Format) Searchability: Searchable text for quick information retrieval Print Quality Print Readability: High-resolution, clear diagrams and text suitable for printing Binding Type Binding: Not Applicable (Digital Format) Paper Type Paper Quality: Not Applicable (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Code Sti: EJ257 Engine Type Sti: 2.5L turbocharged horizontally-opposed (Boxer) 4-cylinder Engine Code Wrx: EJ205 Engine Type Wrx: 2.0L turbocharged horizontally-opposed (Boxer) 4-cylinder Performance Sti Horsepower Sti: 300 hp @ 6000 rpm (SAE Net) Torque Sti: 300 lb-ft @ 4000 rpm (SAE Net) Performance Wrx Horsepower Wrx: 227 hp @ 5600 rpm (SAE Net) Torque Wrx: 251 lb-ft @ 3200 rpm (SAE Net) Fuel System Fuel Delivery: Sequential Multi-Port Fuel Injection (MPI) Fuel Type: Unleaded gasoline, premium (91 octane or higher recommended) 🔧 Transmission Standard Transmission Type: 6-speed manual transmission Transmission Code Sti: TY757 Transmission Code Wrx: TY756 Optional Transmission Type Optional: None (STI and WRX were manual only for this generation) Features All Wheel Drive System: Symmetrical All-Wheel Drive with Driver Controlled Centre Differential (DCCD) on STI models Clutch Type: Hydraulically operated, single dry plate clutch 📐 Dimensions Exterior Length: Approximately 173.8 inches (4415 mm) Width: Approximately 69.7 inches (1770 mm) Height: Approximately 56.1 inches (1425 mm) Weights Curb Weight Sti: Approximately 3240 lbs (1470 kg) Curb Weight Wrx: Approximately 3150 lbs (1430 kg) Wheelbase: Approximately 104.9 inches (2665 mm) 🛡️ Safety Features Ratings NHTSA Front Impact Driver: Not Available (specific rating for 2005 model year might vary) NHTSA Front Impact Passenger: Not Available (specific rating for 2005 model year might vary) IIHS Front Offset Small Overlap: Not Available (IIHS testing protocols evolved) Active Features ABS: Standard Anti-lock Braking System Traction Control: Standard Traction Control System (TCS) Electronic Stability Control: Optional (VDC - Vehicle Dynamics Control on some trims/models) Passive Features Airbags Front:...