🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX STi Model Code: GDB Year: 2006-2007 👋 Introduction Market Position Segment: Compact Performance Sedan/Hatchback Target Audience: Enthusiasts, DIY mechanics, professional workshops specializing in performance Subarus Competitive Analysis Key Competitors: Mitsubishi Lancer Evolution, Honda Civic Si, Volkswagen GTI Key Features Performance Focus: Designed for the high-performance WRX STi variant, detailing its unique systems Completeness: Offers comprehensive coverage for all major vehicle systems and components Diagnostic Value: Provides in-depth diagnostic procedures crucial for diagnosing complex performance issues 📋 Manual Details Coverage Areas Coverage Countries: Global (primary focus on North American specifications) Language: English Format: Digital Download (PDF) Page Count Estimated Page Count: 2000+ Manual Type Manual Type: Complete Workshop Service Repair Manual 📖 Manual Coverage Systems Covered Powertrain Engine: 2.5L Turbocharged EJ257 Boxer Engine Powertrain Transmission: 6-Speed Manual Transmission (TY856) Powertrain Drivetrain: All-Wheel Drive System (Symmetrical AWD) with DCCD (Driver's Control Centre Differential) Chassis Suspension: Front MacPherson Struts, Rear Multi-link Independent Suspension Chassis Steering: Power Rack and Pinion Steering Chassis Brakes: Front Brembo 4-Piston Calipers, Rear Brembo 2-Piston Calipers, ABS System Electrical System: Complete Electrical Schematics, ECUs, Lighting, Ignition, Charging System Body Exterior: Body Panel Removal/Installation, Doors, Hood, Trunk, Bumpers Body Interior: Dashboard, Seats, Upholstery, Trim Components HVAC: Heating, Ventilation, and Air Conditioning System Safety Systems: Airbag System, Seatbelt Pretensioners Procedures Included Routine Maintenance: Oil Changes, Filter Replacements, Fluid Checks, Spark Plug Replacement Engine Repair: Complete Engine Overhaul, Turbocharger Rebuild, Piston/Ring Replacement, Cylinder Head Service Transmission Repair: Clutch Replacement, Gearbox Disassembly/Reassembly, Differential Service Suspension And Steering: Strut Replacement, Bushing Replacement, Ball Joint Service, Wheel Alignment Procedures Brake System Service: Brake Pad/Rotor Replacement, Caliper Service, Brake Line Flush, ABS Bleeding Electrical Diagnostics: Wiring Harness Troubleshooting, Sensor Diagnosis, ECU Reprogramming (where applicable), Fault Code Interpretation Fuel System Repair: Fuel Injector Service, Fuel Pump Replacement, Fuel Filter Replacement Cooling System Service: Radiator Replacement, Water Pump Service, Thermostat Replacement, Coolant Flush Exhaust System Repair: Muffler/Catalytic Converter Replacement, Exhaust Manifold Service Body And Trim: Panel Alignment, Dent Repair Procedures, Interior Trim Installation/Removal Troubleshooting Guides: Comprehensive Diagnostic Flowcharts for Common and Uncommon Issues Technical Depth Depth Level: Comprehensive (from basic maintenance to full engine/transmission rebuilds) Diagnostic Capabilities: Detailed diagnostic procedures, including specific test values and troubleshooting logic Special Tool Requirements: Identification and usage of Subaru-specific and general automotive specialty tools 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text for quick information retrieval Printability: Printable pages for workshop use Print Quality Image Resolution: High-resolution diagrams and illustrations Binding Type Binding: N/A (Digital Product) Paper Type Paper: N/A (Digital Product) ⚙️ Engine Specifications Primary Engine Engine Code: EJ257 Engine Type: DOHC 16-Valve Turbocharged Boxer Displacement: 2457 cc (2.5 Liters) Bore X Stroke: 99.5 mm x 80.0 mm Compression Ratio: 8.2:1 Performance Horsepower Hp: 300 hp @ 6000 rpm (approx.) Torque Lb Ft: 300 lb-ft @ 4000 rpm (approx.) Fuel System Fuel Type: Unleaded Gasoline (91+ Octane Recommended) Fuel Delivery: Sequential Multi-Port Fuel Injection (MPI) Turbocharger: IHI VF39 Ball Bearing Turbocharger Intercooler: Top-Mount Air-to-Air Intercooler 🔧 Transmission Standard Type: 6-Speed Manual Code: TY856 Optional Availability: N/A (Only Manual Offered) Features Dccd: Driver's Control Centre Differential (Manual and Automatic Modes) Center Differential: Viscous coupling and electronically controlled mechanical LSD Rear Differential: Helical Limited Slip Differential (LSD) 📐 Dimensions Exterior Length: 4415 mm (173.8 in) Width: 1795 mm (70.7 in) Height: 1440 mm (56.7 in) Wheelbase: 2625 mm (103.3 in) Front Track: 1530 mm (60.2 in) Rear Track: 1525 mm (60.0 in) Weights Curb Weight: 1505 kg (3318 lbs) approx. Gross Vehicle Weight Rating: 1930 kg (4255 lbs) approx. 🛡️ Safety Features Ratings NHTSA Front Impact: 5-Star (Model Year 2006) IIHS Front Impact: Good (Model Year 2006) Active Features ABS: Yes (4-Wheel Anti-lock Braking System) Traction Control: Yes (Subaru Vehicle Dynamics Control - VDC) Brake Bias Control: Electronic Brake-force Distribution (EBD) Passive Features Airbags: Driver, Passenger, Side Curtain (Front and Rear, depending on trim) Seatbelts: 3-Point ELR Front and Rear, Pretensioners with Force Limiters Body Structure: Reinforced Safety Structure 💡 Technology Features Infotainment Audio System: Factory AM/FM/CD Player with optional subwoofer and amplifier (specifics vary by trim) Display: Basic LCD display for radio and climate information Driver Assistance Stability Control: Subaru Vehicle Dynamics Control (VDC) – integrates ABS, traction control, and active center differential Connectivity Aux Input: Available auxiliary audio input (depending on trim/head unit) Performance Tech Dccd: Driver's Control Centre Differential allows manual adjustment of front/rear torque split, enhancing traction and handling dynamics. Engine Management: Engine Control Unit (ECU) manages fuel injection, ignition timing, boost pressure, and VDC integration. Manual covers ECU diagnostics and pinouts. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 miles (5,000-8,000 km) or 6 months, especially under spirited driving conditions. Refer to manual for specific severe duty intervals. Engine Air Filter: Every 15,000 miles (24,000 km) or 12 months Spark Plugs: Iridium type: 60,000 miles...