🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX STI RS Production Year: 2005 Generation Generation: Second Generation (GD/GG) Codes Chassis Code: GDB (WRX STI), GDA (WRX) Engine Code Primary: EJ257 (WRX STI), EJ205 (WRX - North America) 👋 Introduction Market Position Market Segment: Performance Compact Sedan/Wagon (Gravel Rally Homologation Special) Competitive Analysis Key Competitors: Mitsubishi Lancer Evolution, Subaru WRX (non-STI), Mitsubishi Lancer Ralliart, Ford Focus SVT, Volkswagen GTI. Key Features Performance Focus: Engineered for rally performance, featuring a powerful turbocharged engine, advanced All-Wheel Drive system, and robust chassis. Rally Heritage: Direct lineage from Subaru's World Rally Championship (WRC) success, offering an authentic rally-bred driving experience. Driver Engagement: Emphasis on driver control and feedback, with a responsive steering system and well-tuned suspension. 📋 Manual Details Coverage Areas Covered Models: All Subaru Impreza WRX STI RS models for 2005 Covered Engines: 2.5L Turbocharged Boxer (EJ257 - WRX STI), 2.0L Turbocharged Boxer (EJ205 - WRX) Page Count Estimated Page Count: Extensive (typically 1000+ pages for a complete service manual) Manual Type Manual Type: Official Factory Service and Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Complete engine overhaul, disassembly, assembly, cylinder head, piston, crankshaft, connecting rod, camshaft, timing belt/chain, lubrication system, cooling system. Engine Performance: Fuel injection system, ignition system, turbocharger system, emission control systems (EVAP, EGR), engine diagnostics, ECU mapping. Transmission Drivetrain: Manual Transmission (TY757), All-Wheel Drive (AWD) system, differentials (front, center, rear), driveshafts, clutch system, torque specifications. Suspension Steering: Front and rear suspension (MacPherson struts front, multi-link rear), anti-roll bars, bushings, steering rack, power steering system, wheel alignment specifications. Brakes: Front Brembo 4-piston calipers, rear 2-piston calipers, ABS system, brake fluid specifications, bleeding procedures, parking brake. Electrical System: Battery, charging system (alternator), starting system, lighting (headlights, taillights, interior), horn, wipers, power windows, power locks, fuses, relays, wiring diagrams. Body Interior: Body panels, doors, windows, mirrors, seats, dashboard, HVAC system, interior trim, sound deadening, exterior trim, spoilers, body kits. Diagnostic Troubleshooting: Diagnostic trouble codes (DTCs), fault finding procedures, symptom-based troubleshooting, wiring harness testing. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug replacement, fluid level checks, tire rotation, brake pad replacement, air filter replacement. Major Repairs: Engine rebuilds, transmission rebuilds, clutch replacement, turbocharger replacement, suspension component replacement, brake caliper overhaul. Diagnostics: Step-by-step diagnostic procedures for all major systems, including electrical, fuel, ignition, and emission controls. Electrical Repair: Component testing, wiring harness repair, sensor diagnosis, ECU diagnosis, using multimeter and oscilloscope. Troubleshooting Guides: Detailed guides to diagnose and resolve common and uncommon vehicle issues. Technical Depth Depth Of Coverage: Comprehensive. Covers everything from basic maintenance to complete engine and transmission rebuilds, including detailed specifications and diagnostic procedures. 📊 Manual Specifications File Format File Format: PDF (Portable Document Format) Print Quality Print Quality: High-resolution, suitable for printing individual pages or the entire manual. Binding Type Binding Type: N/A (Digital PDF format) Paper Type Paper Type: N/A (Digital PDF format) Searchability Text Searchability: Searchable text within the PDF for quick information retrieval. ⚙️ Engine Specifications Primary Engine Engine Type Sti: 2.5L DOHC Turbocharged Boxer 4-Cylinder (EJ257) Engine Type Wrx: 2.0L DOHC Turbocharged Boxer 4-Cylinder (EJ205 - North America) Performance Horsepower Sti: 300 hp @ 6000 rpm (approx.) Torque Sti: 300 lb-ft @ 4000 rpm (approx.) Horsepower Wrx: 227 hp @ 5600 rpm (approx. for EJ205) Torque Wrx: 217 lb-ft @ 4000 rpm (approx. for EJ205) Fuel System Fuel Delivery: Multi-point Fuel Injection (MPI) Fuel Type: Premium Unleaded Gasoline (91 Octane or higher recommended) Engine Management ECU Type: Engine Control Unit (ECU) with specific tuning for STI performance 🔧 Transmission Standard Transmission Type: 6-Speed Manual Transmission (TY757) Optional Optional Transmission: N/A (STI models typically only offered with manual) Features Dccd: Driver Controlled Center Differential (DCCD) for adjustable AWD bias (STI) Clutch Type: Hydraulically actuated, twin-plate dry clutch (STI) Fluid Specs Transmission Fluid Spec: Refer to manual for specific API GL-4/GL-5 gear oil recommendations (e.g., Subaru Extra-S, MOTUL Gear 300). 📐 Dimensions Exterior Wheelbase: 104.3 inches (2649 mm) Length: 173.8 inches (4415 mm) Width: 69.7 inches (1770 mm) Height: 57.1 inches (1450 mm) Weights Curb Weight: Approximately 3200-3300 lbs (1450-1500 kg), varies by trim and options. 🛡️ Safety Features Ratings NHTSA Front Impact: 5-Star (for driver and passenger) NHTSA Side Impact: 4-Star (for front and rear passengers) Active Features ABS: Standard Anti-lock Braking System (ABS) with Electronic Brakeforce Distribution (EBD) AWD: Subaru Symmetrical All-Wheel Drive (AWD) with Driver Controlled Center Differential (DCCD) on STI Passive Features Airbags: Driver and passenger front airbags, front side-impact airbags. Seatbelts: Three-point seatbelts with pretensioners and load limiters. Chassis Design: Reinforced chassis with crumple zones for improved impact energy absorption. 💡 Technology Features Infotainment Head Unit: Factory CD player with AM/FM radio. Optional premium audio systems may be present. Driver Assistance Cruise Control: Standard cruise control system. Connectivity Audio Inputs: Auxiliary audio input...