🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX and STI Year: 2008 Codes Chassis Code: GE/GH (Standard Impreza), GR/GV (Hatchback/Sedan WRX/STI) Engine Codes: EJ255 (WRX), EJ257 (STI) 👋 Introduction Market Position Segment: Performance Compact/Sport Sedan/Hatchback Target Audience: Enthusiasts, DIY mechanics, professional automotive technicians working on Subaru Impreza WRX and STI models. Competitive Analysis Key Competitors: Mitsubishi Lancer Evolution, Volkswagen GTI, Ford Focus RS, Mazdaspeed3 Key Features Vehicle Selling Points: Symmetrical All-Wheel Drive, turbocharged Boxer engines, rally-bred performance, driver-focused cockpit, agile handling. Manual Value Proposition Benefits Of Manual: Enables cost savings on repairs and maintenance, improves understanding of vehicle systems, aids in proper troubleshooting and diagnosis. 📋 Manual Details Coverage Areas Primary Coverage: Subaru Impreza WRX and STI 2008 models Secondary Coverage: Standard Impreza models relevant to WRX/STI shared components Page Count Estimated Page Count: Approximately 2000-3000 pages (typical for comprehensive service manuals) Manual Type Manual Type: Service Workshop Manual / Repair Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine Systems: H4DOTC (WRX, likely twin-scroll turbo), H4SO (STI, likely twin-scroll turbo), fuel system, ignition system, cooling system, lubrication system, exhaust system, emission controls, turbocharger systems. Transmission Systems: Manual transmissions (likely 5-speed for WRX, 6-speed for STI), clutch system, drivetrain components (driveshafts, differentials). Chassis Systems: Suspension (front and rear), steering system, braking system (including ABS), wheel alignment, body structure, chassis components. Electrical Systems: Wiring diagrams, lighting, instrumentation, power distribution, starting and charging systems, engine control module (ECM), body control module (BCM), infotainment, safety systems. Body Systems: Interior and exterior trim, doors, windows, seats, HVAC, body repair procedures, collision repair, corrosion prevention. Procedures Included Diagnostic Procedures: Troubleshooting guides, diagnostic trouble codes (DTCs), inspection procedures, component testing. Maintenance Procedures: Scheduled maintenance, fluid changes (oil, coolant, brake fluid, transmission fluid, differential fluid), filter replacements, inspections. Repair Procedures: Detailed step-by-step instructions for component removal, installation, and overhaul of all major systems. Special Tools: Identification and usage of Subaru-specific special tools required for certain repairs. Technical Depth Depth Of Information: Comprehensive; covers basic maintenance to complete engine and transmission rebuilds, advanced diagnostics, and detailed electrical system analysis. 📊 Manual Specifications File Format File Type: PDF Searchability: Likely text-searchable PDF Print Quality Printability: Printable without restriction Binding Type Binding: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) Compatibility Operating Systems: Compatible with all versions of Windows & Mac Requirements Software Required: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Wrx Engine Code: EJ255 Wrx Engine Type: 2.5L Turbocharged Boxer 4-Cylinder (DOHC) Sti Engine Code: EJ257 Sti Engine Type: 2.5L Turbocharged Boxer 4-Cylinder (DOHC) Performance Wrx Horsepower: Approx. 265 hp @ 6000 rpm Wrx Torque: Approx. 244 lb-ft @ 4400 rpm Sti Horsepower: Approx. 305 hp @ 6000 rpm Sti Torque: Approx. 290 lb-ft @ 4000 rpm Fuel System Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) Induction: Sequential Multi-Point Fuel Injection (MPI), Turbocharged with Intercooler Engine Maintenance Timing Belt Replacement: Refer to manual for specific interval; typically around 105,000 miles or 7 years. Includes idlers and tensioner. Spark Plug Type: Refer to manual for specific PN and gap; often Iridium type 🔧 Transmission Standard Wrx Transmission: 5-speed Manual Sti Transmission: 6-speed Manual Optional Optional Transmission: None offered for WRX/STI performance variants in this year Features AWD System: Subaru Symmetrical All-Wheel Drive with front/rear differentials and center differential (STI includes Driver Controlled Center Differential - DCCD). Maintenance Manual Transmission Fluid Type: Refer to manual for specific Subaru specifications (e.g., Genuine Subaru Gear Oil API GL-5, SAE 75W-90) Differential Fluid Type: Refer to manual for specific Subaru specifications (e.g., Genuine Subaru Gear Oil API GL-5, SAE 75W-90) 📐 Dimensions Exterior Body Styles: 4-door Sedan, 5-door Hatchback Weights Curb Weight: Approx. 3200-3400 lbs (varies by body style and trim) 🛡️ Safety Features Ratings NHTSA Front Crash Rating: 5-Star (for applicable models/years) IIHS Rating: Good (for applicable tests/years) Active Features Braking System: 4-wheel Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Brake Assist. STI typically features Brembo brakes. Traction Control: Subaru Vehicle Dynamics Control (VDC) system (may have different modes for WRX/STI). Passive Features Airbags: Front, side, and curtain airbags. 💡 Technology Features Infotainment Audio System: Factory premium audio system with CD player, AM/FM radio, and auxiliary input. Optional navigation system available. Driver Assistance ABS Ebd: Standard Anti-lock Braking System and Electronic Brake-force Distribution. Vdc: Vehicle Dynamics Control (traction and stability control). Connectivity Bluetooth: May be available as an option or part of an upgraded audio package. 🔧 Maintenance Service Intervals Engine Oil Change: Refer to manual for specific mileage/time intervals (e.g., 3,750 miles or 6 months for severe service, 7,500 miles or 12 months for normal service). Cabin Air Filter Replacement: Refer to manual (typically every 12,000-15,000 miles or 12 months). Brake Fluid Replacement: Refer to manual (often every 2-3 years or 30,000 miles). Fluid Specifications Engine Oil Type: Refer...