🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX STI Year: 2008 Codes Chassis Code: GR/GV Engine Code: EJ257 👋 Introduction Market Position Vehicle Segment: Compact sports sedan/hatchback Target Audience: Enthusiasts, performance-oriented drivers, rally-inspired vehicle owners Competitive Analysis Key Competitors: Mitsubishi Lancer Evolution, Subaru WRX (non-STI variants), Volkswagen Golf R, Ford Focus RS Key Features Performance Orientation: Symmetrical All-Wheel Drive (AWD), turbocharged Boxer engine, performance-tuned suspension Rally Heritage: Direct lineage from Subaru's successful World Rally Championship (WRC) cars 📋 Manual Details Coverage Areas Manual Scope: Comprehensive service, repair, and diagnostic information Page Count Estimated Page Count: Over 2000 pages (typical for comprehensive factory service manuals) Manual Type Manual Format Type: Factory Service Manual / Workshop Manual / Repair Manual Language Language: English Format Delivery Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine System: Engine mechanical, lubrication, cooling, fuel, ignition, emissions, starting, charging Transmission System: Manual transmission (TY856), clutch system, drivetrain components (driveshafts, differentials) Braking System: Front and rear brakes (Brembo calipers), ABS, brake fluid, parking brake Suspension System: Front and rear suspension (MacPherson struts front, double wishbone rear), alignment, steering components Electrical System: Wiring diagrams, lighting, instruments, audio system, power accessories, fuses, relays, battery, starter, alternator Body And Chassis: Body construction, interior trim, exterior trim, doors, windows, glass, safety systems (airbags), frame and structure HVAC System: Heating, ventilation, and air conditioning system diagnosis and repair ECU And Sensors: Engine Control Unit (ECU) diagnosis, sensor readings, wiring, diagnostic trouble codes (DTCs) Procedures Included Maintenance Procedures: Oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection/replacement Repair Procedures: Engine overhaul, transmission rebuild, brake caliper replacement, suspension component replacement, turbocharger service Troubleshooting Procedures: Step-by-step diagnostic guides for common and complex issues, electrical troubleshooting charts Diagnostic Procedures: On-Board Diagnostics (OBD-II) system usage, reading DTCs, data stream interpretation Special Tools: Identification and usage of specialized tools required for specific repairs Technical Depth Diagnostic Capability: Advanced diagnostics including sensor data interpretation, ECU programming (if applicable/covered) Repair Complexity: Covers everything from routine maintenance to complete engine and transmission overhauls Wiring Diagrams: Detailed, section-specific electrical wiring diagrams 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text for quick information retrieval Compatibility: Compatible with all PDF readers on PC, Mac, tablet, and smartphone. Print Quality Image Resolution: High-resolution images and diagrams for clarity Binding Type Binding: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: EJ257 Flat-4 (Boxer) Displacement: 2.5 Liters (2457 cc) Aspiration: Turbocharged and Intercooled Performance Horsepower: 305 hp @ 6000 rpm Torque: 290 lb-ft @ 4000 rpm Redline: 7000 rpm Fuel System Fuel Delivery: Multi-point Fuel Injection (MPI) Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) Compression Ratio: 8.4:1 🔧 Transmission Standard Transmission Type: 6-speed Manual Transmission (TY856) Optional Optional Transmission: N/A (STI models exclusively featured manual transmission) Features Drivetrain: Symmetrical All-Wheel Drive (AWD) with Driver Controlled Center Differential (DCCD) Clutch Type: Hydraulically actuated, multi-plate clutch Differentials: Front Helical Limited-Slip Differential (LSD), Rear Mechanical Limited-Slip Differential (LSD) 📐 Dimensions Exterior Length: 174.2 inches (Hatchback), 179.7 inches (Sedan) Width: 70.9 inches Height: 57.7 inches (Hatchback), 57.3 inches (Sedan) Wheelbase: 103.0 inches Weights Curb Weight: Approx. 3300-3350 lbs (depending on body style) Gross Vehicle Weight Rating: Approx. 4500 lbs Cargo Cargo Volume Hatchback: Approx. 19.0 cu ft (rear seats up) Cargo Volume Sedan: Approx. 11.3 cu ft 🛡️ Safety Features Ratings NHTSA Front Crash Test: 5-star NHTSA Side Crash Test: 5-star IIHS Top Safety Pick: Yes (for models with specific features) Active Features Traction Control: Standard Electronic Stability Control: Standard (Vehicle Dynamics Control - VDC) Antilock Braking System: Standard (ABS) Passive Features Airbags: Driver and front passenger airbags, front side-impact airbags, side-curtain airbags Seat Belts: 3-point height-adjustable front seat belts with pre-tensioners and force limiters 💡 Technology Features Infotainment Audio System: Standard AM/FM/CD with MP3 capability, SiriusXM Satellite Radio compatibility, auxiliary input. Optional navigation system. Display: Multi-function display in dashboard for climate control and audio information. Driver Assistance All Wheel Drive System: Subaru's Symmetrical AWD with Driver Controlled Center Differential (DCCD) offering manual adjustment of torque split. Performance Modes: SI-DRIVE (Subaru Intelligent Drive) system offering three modes: Intelligent, Sport, and Sport Sharp. Connectivity Usb Port: Auxiliary input standard, USB may vary by trim/options. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,750 miles or 3 months (severe duty/enthusiast driving), 7,500 miles or 6 months (normal driving) Air Filter Replacement: Every 15,000 miles or 12 months Spark Plug Replacement: Every 30,000 miles (specific iridium type) Fluid Specifications Engine Oil Type: SAE 5W-30 Synthetic (API SN or ILSAC GF-5 certified) Engine Oil Capacity: Approx. 4.7 US quarts (with filter) Coolant Type: Subaru Super Coolant (Blue) or equivalent Transmission Fluid Type: Subaru ExtraS (or equivalent) for 6MT, or API GL-4 SAE 75W-90 Gear Oil Brake Fluid Type: DOT 3 or DOT 4 Brake Fluid Known...