🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX STI Model Variant: GD chassis (Third Generation) Model Year: 2002 Codes Chassis Code: GDB 👋 Introduction Market Position Segment: Compact performance sedan/hatchback Target Audience: Enthusiast drivers, rally sport fans, performance car owners Competitive Analysis Key Competitors: Mitsubishi Lancer Evolution, Ford Focus RS, Honda Civic Type R Key Features Performance Focus: Tuned for high performance and rally-inspired driving dynamics All Wheel Drive: Symmetrical All-Wheel Drive system with Driver Controlled Center Differential (DCCD) Turbocharged Engine: Powerful EJ207 Boxer engine known for its responsiveness and tuning potential 📋 Manual Details Coverage Areas Coverage Scope: Comprehensive repair and service procedures Page Count Estimated Page Count: 1500-2000 (typical for Subaru factory service manuals) Manual Type Type: Factory Service Manual (FSM) / Workshop Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: 2.0L EJ207 Turbocharged Boxer Engine Engine Management: ECU, ignition, fuel injection, emissions control, sensors, actuators Transmission: 6-speed manual transmission (TY757VWAAA) Drivetrain: All-Wheel Drive (AWD) system, center differential, front and rear differentials Suspension: Front (MacPherson strut, unequal length, trailing link), Rear (multi-link), sway bars, bushings Brakes: Front Brembo 4-piston calipers, Rear Brembo 2-piston calipers, ABS, EBD Steering: Hydraulic power steering system, steering column, rack and pinion Electrical: Battery, charging system, starting system, lighting, instrument cluster, comfort/convenience systems Body: Body structure, panels, doors, glass, interior trim, bumpers HVAC: Heating, Ventilation, and Air Conditioning (HVAC) system Safety Systems: Airbags, seat belts, pre-tensioners Procedures Included Maintenance: Routine scheduled maintenance, oil changes, filter replacements, inspections Diagnostics: Troubleshooting guides, DTC (Diagnostic Trouble Code) interpretation, component testing Repair: Component removal, installation, adjustment, overhaul Disassembly: Engine, transmission, drivetrain components, suspension, brakes Reassembly: Detailed reassembly instructions with torque specifications Wiring Diagrams: Complete electrical wiring schematics for all systems Special Tools: Identification and usage of specialized tools required for specific repairs Technical Depth Depth: In-depth, dealership-level technical information Accuracy: Factory-verified technical data and procedures 📊 Manual Specifications File Format File Type: Searchable PDF Printability: Printable pages Resolution: High-resolution images and diagrams Binding Type Binding: N/A (Digital PDF format) Paper Type Paper: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Engine Code: EJ207 Configuration: Horizontally-opposed (Boxer), 4-cylinder, turbocharged and intercooled Displacement: 1994 cc (2.0 Liters) Bore X Stroke: 92.0 mm x 75.0 mm Compression Ratio: 8.0:1 Performance Horsepower: 280 PS (276 hp) @ 6400 rpm (JDM spec, often higher in reality) Torque: 333 Nm (246 lb-ft) @ 4400 rpm (JDM spec) Fuel System Fuel Delivery: Multi-point fuel injection (MPI) with twin scroll turbocharger Fuel Type: Unleaded gasoline, premium octane (98 RON recommended) Ignition System: Electronic ignition, coil-on-plug Engine Management ECU Type: Denso ECU (e.g., 22611AD710, 22611AD800 for specific markets) 🔧 Transmission Standard Type: 6-speed manual transmission Model Code: TY757VWAAA (typical for STI) Optional Availability: No automatic transmission offered on STI model for 2002 Features Dccd: Driver Controlled Center Differential (DCCD) with automatic and manual modes Gear Ratios: Specific gear ratios for all 6 forward gears and reverse (detailed in manual) Fluid Specifications Transmission Fluid Type: GL-5, SAE 75W-90 (Subaru Genuine Gear Oil or equivalent) 📐 Dimensions Exterior Length: 4415 mm (173.8 in) Width: 1770 mm (69.7 in) Height: 1410 mm (55.5 in) Wheelbase: 2625 mm (103.3 in) Front Track: 1500 mm (59.1 in) Rear Track: 1495 mm (58.9 in) Weights Curb Weight: Approximately 1470 kg (3240 lbs) Gross Vehicle Weight Rating: 1800 kg (3968 lbs) Wheel Tire Wheel Size: 17 x 7.5 inches Bolt Pattern: 5x100mm Tire Size: 225/45R17 🛡️ Safety Features Ratings NHTSA Front Impact: 4 Stars (Driver), 4 Stars (Passenger) - for 2002 model year IIHS Front Impact: Good Active Features ABS: Standard Anti-lock Braking System Ebd: Standard Electronic Brake-force Distribution AWD: Symmetrical All-Wheel Drive with DCCD Passive Features Airbags: Front dual-stage airbags, front side airbags Seatbelts: 3-point front seatbelts with pre-tensioners and load limiters, 3-point rear seatbelts 💡 Technology Features Infotainment Head Unit: Factory AM/FM/CD player with optional premium sound system Driver Assistance Dccd: Driver Controlled Center Differential allowing manual adjustment of front/rear torque split Connectivity Prewiring: Pre-wired for optional accessories and audio upgrades 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,750 miles or 6 months, whichever comes first (severe duty/performance driving) Engine Air Filter: Replace every 15,000 miles or 12 months Cabin Air Filter: Replace every 15,000 miles or 12 months Spark Plugs: Replace every 30,000 miles (iridium type) Coolant Change: Flush and replace every 30,000 miles or 24 months Fluid Specifications Engine Oil Type: 5W-30 Synthetic (API SG or higher) Engine Oil Capacity: 4.5 Liters (4.8 US Quarts) with filter change Coolant Type: Subaru Super Coolant (Blue) or equivalent (50/50 mix with distilled water) Brake Fluid Type: DOT 3 or DOT 4 Power Steering Fluid: Subaru Automatic Transmission Fluid (ATF-HP) or Dexron III/Mercon equivalent Known Issues Engine Reliability: Head gasket failures (less common on EJ207 than EJ25, but still possible), ringland failure under high boost/poor...