🏷️ Basic Information Identification Make: Subaru Model: Impreza Year: 2007 Trim Levels Covered: WRX, STI Codes Chassis Code: GD, GG 👋 Introduction Market Position Vehicle Segment: Compact Performance Sedan/Wagon Target Audience: Enthusiasts, DIY mechanics, performance tuners Competitive Analysis Key Competitors: Mitsubishi Lancer Evolution, Volkswagen Golf GTI, Ford Focus RS Key Features Performance Focus: Emphasizes the performance aspects of the WRX and STI models All Wheel Drive: Details on Subaru's Symmetrical All-Wheel Drive system Turbocharged Engine: In-depth coverage of the EJ25 engine and its components Diy Emphasis: Written with the do-it-yourself mechanic in mind 📋 Manual Details Coverage Areas Coverage Scope: Complete factory service and repair Page Count Estimated Pages: Over 2000 Manual Type Type: Service Repair Workshop Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Yes (including disassembly, inspection, assembly) Engine Management ECU: Yes (including sensor diagnosis, fuel control, ignition timing) Fuel System: Yes (including fuel pump, injectors, pressure regulator) Cooling System: Yes (radiator, thermostat, water pump, fan) Exhaust System: Yes (including catalytic converter, mufflers) Forced Induction Turbocharger: Yes (including turbocharger, intercooler, wastegate, blow-off valve) Transmission Manual: Yes (including clutch, gearbox, linkages) Transmission Automatic: Not applicable for WRX/STI performance variants Drivetrain AWD: Yes (including center differential, viscous coupling, rear differential) Suspension Front: Yes (struts, control arms, bushings) Suspension Rear: Yes (multi-link, trailing arms, bushings) Steering System: Yes (rack and pinion, power steering pump) Brake System Front: Yes (calipers, rotors, pads, ABS components) Brake System Rear: Yes (calipers, rotors, pads, ABS components) Wheels And Tires: Yes (specifications, mounting) Body Structure: Yes (frame, chassis components) Body Panels And Trim: Yes (doors, hood, fenders, bumpers, interior trim) Glass And Mirrors: Yes (windshield, side glass, mirrors) HVAC System: Yes (heating, ventilation, air conditioning) Electrical System Charging: Yes (alternator, battery, wiring) Electrical System Starting: Yes (starter motor, ignition switch) Lighting System: Yes (headlights, taillights, interior lighting) Instrumentation And Gauges: Yes (speedometer, tachometer, warning lights) Infotainment Audio: Yes (radio, speakers, amplifier) Safety Restraints Airbags: Yes (airbag system diagnosis and replacement) ABS And Traction Control: Yes (component testing, diagnostic procedures) Diagnostic Troubleshooting: Yes (OBD-II codes, symptom-based diagnostics) Procedures Included Routine Maintenance: Yes (oil changes, filter replacements, fluid checks) Engine Rebuilds: Yes (detailed disassembly and reassembly steps) Transmission Repair: Yes (clutch replacement, gearbox overhauls) Brake Service: Yes (pad/rotor replacement, caliper service, bleeding) Suspension Replacement: Yes (strut/shock replacement, control arm bushings) Electrical Component Testing: Yes (using multimeter, oscilloscope) Body Panel Replacement: Yes (adjustment, mounting, alignment) HVAC Diagnosis And Repair: Yes (leak detection, component replacement) Troubleshooting Flowcharts: Yes (for common drivability and electrical issues) Torque Specifications: Yes (for critical engine, chassis, and drivetrain fasteners) Technical Depth Depth: Comprehensive (from basic maintenance to complete engine and transmission rebuilds) Diagnostic Capability: Advanced (including specific fault codes and repair strategies) 📊 Manual Specifications File Format Searchability: Yes, fully searchable text Printable: Yes, printable pages Print Quality Diagram Resolution: High-quality, clear diagrams Text Clarity: Easy-to-read text sections Binding Type Binding Type: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Code: EJ25 Engine Type: 2.5L Turbocharged Boxer-4 Displacement: 2457 cc Bore X Stroke: 99.5 mm x 79.0 mm Compression Ratio: 8.4:1 Valvetrain: DOHC, 16 valves, Subaru's Variable Valve Lift and Timing (VVL) for STI Performance Horsepower Wrx: 230 hp @ 5200 rpm Torque Wrx: 235 lb-ft @ 3000 rpm Horsepower Sti: 305 hp @ 6000 rpm Torque Sti: 290 lb-ft @ 4000 rpm Fuel System Fuel Delivery: Sequential Electronic Fuel Injection (Multi-point) Fuel Type: Premium Unleaded Gasoline (91+ Octane Recommended) Turbocharger: Twin-scroll TD04 (WRX), IHI VF43 (STI) Intercooler: Top-mounted air-to-air 🔧 Transmission Standard Type Wrx: 5-speed Manual Type Sti: 6-speed Manual Features Drivetrain Configuration: Symmetrical All-Wheel Drive (AWD) Center Differential: Viscous coupling (WRX), Driver Controlled Center Differential (DCCD) (STI) Rear Differential: Limited Slip Differential (LSD) (WRX), Helical LSD (STI) Fluid Type Manual Transmission Fluid: API GL-5, SAE 75W-90 (Refer to manual for specific part numbers/brands) 📐 Dimensions Exterior Length: 4415 mm (Sedan), 4485 mm (Wagon) Width: 1740 mm Height: 1445 mm (Sedan), 1485 mm (Wagon) Wheelbase: 2625 mm Track Width Front: 1490 mm Track Width Rear: 1490 mm Weights Curb Weight Wrx: ~1460 kg (Sedan), ~1500 kg (Wagon) Curb Weight Sti: ~1505 kg (Sedan) Gross Vehicle Weight Rating: Refer to vehicle placard Wheel Bolt Pattern: 5 x 100 mm Wheel Size: 17x8 (WRX), 18x8.5 (STI) Tire Size Wrx: 205/50R17 or 215/45R17 Tire Size Sti: 225/40R18 🛡️ Safety Features Ratings NHTSA Front Impact: 4 Stars NHTSA Side Impact: 5 Stars IIHS Front Offset Crash Test: Good Active Features ABS: Yes (4-wheel ABS) Traction Control: Yes (Active Traction Control) Electronic Stability Control: Yes (Vehicle Dynamics Control - VDC) Brake Assist: Yes Passive Features Airbags Front: Driver and Passenger Frontal Airbags Airbags Side: Front Side-Impact Airbags Airbags Curtain: Front and Rear Side-Curtain Airbags (Optional/Standard depending on trim) Seatbelts: 3-point front and rear seatbelts...