🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX STi Model Generation: GD/GG Model Variant: WRX STi Codes Chassis Code: GDB Engine Codes: EJ207 👋 Introduction Market Position Market Segment: Performance Compact Sedan/Wagon, Rally-inspired homologation special Competitive Analysis Key Competitors Era: Mitsubishi Lancer Evolution, Ford Focus RS, Volkswagen Golf GTI Key Features Performance Focus: All-Wheel Drive, turbocharged engine, driver-focused chassis tuning Rally Heritage: Direct descendant of Subaru's World Rally Championship (WRC) cars Manual Value Proposition Diy Support: Empowers owners to perform maintenance, diagnostics, and repairs, saving on labor costs Accuracy Reliability: Provides manufacturer-approved procedures and specifications for optimal results 📋 Manual Details Coverage Areas Applicable Years: 2003, 2004 Global Coverage: Yes Regional Variants Covered: JDM, USDM, EUDM (primarily JDM/USDM focus) Page Count Estimated Page Count: Over 2000 pages (typical for complete workshop manuals) Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Powertrain: Engine, Transmission, Drivetrain, Fuel System, Exhaust System Chassis: Suspension, Steering, Brakes, Wheels, Tires Electrical: Wiring Diagrams, Lighting, Instruments, Audio System, ECUs, Sensors Body And Interior: Body Panels, Doors, Seats, HVAC, Safety Systems (Airbags) Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, inspections Diagnostics: Troubleshooting guides, DTC (Diagnostic Trouble Code) interpretation, symptom-based diagnostics Repair: Component removal and installation, major overhauls, system repairs Adjustments: Wheel alignment, clutch adjustment, idle speed adjustment Special Tools: Identification and usage of specialized Subaru tools Technical Depth Depth: Comprehensive, covering everything from basic checks to complete engine and transmission rebuilds Detail Level: Detailed step-by-step instructions, torque specifications, diagrams, and schematics 📊 Manual Specifications File Format File Format: PDF (Portable Document Format) Searchability: Likely text-searchable, allowing for quick navigation of topics Print Quality Print Quality: High-resolution scans/digital originals, suitable for printing Binding Type Binding Type: N/A (Digital) Paper Type Paper Type: N/A (Digital) ⚙️ Engine Specifications Primary Engine Engine Type: Horizontally-opposed (Boxer) 4-Cylinder, turbocharged, intercooled Engine Code: EJ207 (DOHC, AVCS) Displacement: 1994 cc (2.0 Liters) Performance Horsepower Ps: 280 PS @ 6400 RPM (JDM spec; may vary slightly by region) Torque Nm: 352 Nm @ 4400 RPM (JDM spec; may vary slightly by region) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) with sequential multi-port injection Fuel Type: Unleaded gasoline, premium (95 RON or higher recommended) Cooling System Coolant Type: Subaru Super Coolant (Blue) or equivalent silicate-free ethylene glycol coolant 🔧 Transmission Standard Transmission Type: 6-speed Manual Transmission (STI-specific 'Dog-leg' or close-ratio gearbox) Optional Optional Transmission: None (Manual only for STi) Features Drivetrain Configuration: Symmetrical All-Wheel Drive (AWD) with Driver Controlled Center Differential (DCCD) Fluid Specifications Manual Transmission Fluid Spec: Subaru Extra S (Hypoid Gear Oil API GL-5, SAE 75W-90) Front Differential Fluid Spec: Subaru Extra S (Hypoid Gear Oil API GL-5, SAE 75W-90) Rear Differential Fluid Spec: Subaru Extra S (Hypoid Gear Oil API GL-5, SAE 75W-90) 📐 Dimensions Exterior Body Styles: 4-door Sedan, 5-door Wagon Wheelbase Mm: 2525 mm Length Mm: 4405 mm (Sedan) / 4465 mm (Wagon) Width Mm: 1770 mm Height Mm: 1440 mm (Sedan) / 1490 mm (Wagon) Weights Curb Weight Kg: Approx. 1430 kg (Sedan) / 1470 kg (Wagon) Wheels Tires Standard Wheel Size: 17 x 7.5 inches Optional Wheel Size: 17 x 8.0 inches (STi specific) Wheel Bolt Pattern: 5 x 100 mm Standard Tire Size: 225/45 R17 Brake Rotor Size Front Mm: 315 mm (Ventilated Discs) Brake Rotor Size Rear Mm: 300 mm (Ventilated Discs) 🛡️ Safety Features Ratings NHTSA Ratings Usdm Era: 4-star frontal driver, 5-star frontal passenger (typical for this era, specific ratings may vary) Active Features AWD System: Symmetrical All-Wheel Drive with DCCD (Driver Controlled Center Differential) Limited Slip Differentials: Front helical LSD, Rear viscous LSD (STi specific) Braking System: Four-wheel disc brakes, ABS (Anti-lock Braking System), Electronic Brake-force Distribution (EBD) Passive Features Airbags: Driver and passenger front airbags, side airbags (optional/regional) Seatbelts: Pretensioner and force-limiting seatbelts 💡 Technology Features Infotainment Audio System: Factory CD player with AM/FM radio, usually 4 or 6 speakers Instrument Cluster: Tachometer, speedometer, fuel gauge, coolant temperature gauge, various warning lights, boost gauge (STi specific) Driver Assistance Traction Control: Standard ABS, but limited electronic traction control beyond AWD and LSDs Connectivity Original Connectivity: Basic, no modern Bluetooth or USB connectivity from factory 🔧 Maintenance Service Intervals Oil Change Interval Km: 5,000 - 7,500 km or 6 months, whichever comes first (severe use) Air Filter Replacement Km: 15,000 - 30,000 km Spark Plug Replacement Km: Approx. 80,000 - 100,000 km (iridium plugs) Timing Belt Replacement Km: Not applicable (uses a timing chain) Fluid Specifications Engine Oil Capacity Liters: 4.5 Liters (with filter change) Engine Oil Type: SAE 5W-30 or 10W-30 synthetic API SJ, SL, or SM, ILSAC GF-3 or GF-4 Coolant Capacity Liters: Approx. 7.0 Liters Brake Fluid Type: DOT 3 or DOT 4 Known Issues Engine Oil Consumption: Some EJ207 engines can exhibit oil consumption; regular...