🏷️ Basic Information Identification Make: Subaru Model: Impreza Sub Models: WRX, STI, P1 Production Years Covered: 1993-2009 Codes Chassis Codes: GC, GF, GG, GD 👋 Introduction Market Position Segment: Compact performance sedan/hatchback (WRC homologation special) Competitive Analysis Key Competitors: Mitsubishi Lancer Evolution, Ford Focus RS, Honda Civic Type R (in later generations) Key Features Performance Orientation: Symmetrical All-Wheel Drive, turbocharged boxer engines, rally heritage Value Proposition Manual Purpose: Enables owners and technicians to perform diagnostics, maintenance, and repairs on a wide range of Impreza models and performance variants. 📋 Manual Details Coverage Areas Coverage Breakdown: 1993-1996 WRX, 1997-1998 Impreza, 1999-2000 Impreza (P1), 2001-2002 Impreza (STI), and subsequent models up to 2009 Page Count Estimated Total Pages: Thousands (estimated across multiple volumes) Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: Digital (likely PDF, potentially searchable) 📖 Manual Coverage Systems Covered Powertrain: Engine (EJ series), transmission (manual & automatic), drivetrain (AWD system, differentials), fuel system, exhaust system, cooling system, lubrication system Chassis: Suspension (front & rear), steering system, braking system (including ABS), wheels & tires Body And Interior: Body panels, interior trim, HVAC system, seats, airbags Electrical: Wiring diagrams, lighting, ignition system, starting & charging system, ECU, sensors, body control modules, infotainment systems Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, belt inspections/replacements, spark plug services Diagnostics And Troubleshooting: Diagnostic trouble codes (DTCs), symptom-based troubleshooting guides, electrical circuit diagnostics Repair And Overhaul: Engine component disassembly/reassembly, transmission overhaul, brake caliper/rotor replacement, suspension component replacement, body panel repair/replacement Technical Specifications: Torque specifications, clearances, timing procedures, component tolerances, fluid capacities and types Technical Depth Depth: Comprehensive (from basic maintenance to full engine and transmission rebuilds, including electrical system diagnostics) 📊 Manual Specifications File Format Digital Format: PDF (typically optimized for searchability and printing) Print Quality Printability: High resolution, suitable for printing individual pages or sections Binding Type Binding: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Family: Subaru EJ Series Boxer Engines Performance Displacement Range: 2.0L, 2.5L (turbocharged) Horsepower Range: Approx. 215 hp (WRX) to 300+ hp (STI, depending on generation and specific tune) Torque Range: Approx. 200 lb-ft to 300+ lb-ft (depending on generation and specific tune) Fuel System Induction: Turbocharged, Intercooled (Sequential twin-turbo in early GC generation WRX) Fuel Delivery: Electronic Fuel Injection (EFI) Engine Management ECM Type: ECU (Engine Control Unit) - various iterations throughout the years Engine Assembly Pistons And Rods: Forged components in STI and performance WRX models for enhanced durability 🔧 Transmission Standard Type Early Models: 5-Speed Manual Optional Type Later Models And Non-Sti: 4-Speed Automatic (less common on performance models) Features AWD System: Subaru Symmetrical All-Wheel Drive with various center differential types (e.g., viscous coupling, electronically controlled) Sti Dccd: Driver Controlled Center Differential (DCCD) on many STI models for adjustable torque distribution Gearing Gear Ratios: Varies by model and year, detailed in manual 📐 Dimensions Exterior Body Styles: Sedan, Coupe, Wagon Wheelbase Range: Approx. 2515mm - 2620mm (depending on generation) Weights Curb Weight Range: Approx. 1250kg - 1450kg (depending on model and trim) 🛡️ Safety Features Ratings Crash Test Information: Refer to specific year/model for NHTSA/IIHS ratings; early models may have limited data. Manual will cover SRS airbag system diagnostics. Active Features Braking System: 4-wheel disc brakes, ABS (Anti-lock Braking System) often standard or optional Traction Control: Available on later models and specific trims Passive Features Airbags: Driver and passenger front airbags (SRS) standard from early 2000s onwards Body Structure: Reinforced chassis for occupant protection 💡 Technology Features Infotainment Audio Systems: Factory head units often featured CD players, AM/FM radio. Later models may have touchscreen displays with navigation options. Manual covers unit removal and wiring. Driver Assistance ABS: Anti-lock Braking System (ABS) became increasingly common and standard on performance models. Connectivity Cruise Control: Standard on most trims and generations. Engine Management ECU Tuning Potential: These models are popular for ECU tuning to optimize performance. The manual provides baseline information essential for tuners. 🔧 Maintenance Service Intervals Oil Change Interval: Typically 3,000-7,500 miles (5,000-12,000 km) depending on driving conditions and oil type. Consult manual for exact recommendations. Timing Belt Replacement: Recommended every 60,000-105,000 miles (100,000-170,000 km) or 5-7 years, particularly for EJ20/EJ25 engines. Crucial for preventing catastrophic engine failure. Fluid Specifications Engine Oil: API SG/SH/SJ/SL/SM/SN, ILSAC GF-2/GF-3/GF-4/GF-5. Viscosity typically 5W-30 or 10W-30, with synthetic recommended for performance models. Refer to manual for precise specification. Coolant: Subaru Super Coolant (blue) or equivalent ethylene glycol-based coolant. Capacity around 7.0-8.0 liters. Consult manual for specific type and procedure. Transmission Fluid Manual: API GL-4 or GL-5 gear oil. Specific viscosity (e.g., 75W-90) and capacity (e.g., 1.7-2.0L) detailed in manual. Transmission Fluid Automatic: Subaru Genuine ATF HP or equivalent. Capacity around 3.0-4.0L for drain/fill. Consult manual for exact type and capacity. Brake Fluid: DOT 3 or DOT 4 brake fluid. Known...