🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX & STI Year: 2008 Codes Chassis Code: GD/GG (for 2008, this generation transitioned to GE/GH/GR/GV chassis) Engine Codes: H4DOTC (for WRX), H4SO (for STI - potentially referring to EJ257 variant) 👋 Introduction Market Position Market Position: Performance compact sedan/hatchback, known for its all-wheel-drive system and turbocharged engines, appealing to enthusiasts and rally sport fans. Competitive Analysis Competitive Analysis: Competes with vehicles like Mitsubishi Lancer Evolution, Volkswagen Golf GTI, and Ford Focus RS, offering a unique blend of rally-bred performance and everyday usability. Key Features Key Features: Symmetrical All-Wheel Drive, turbocharged boxer engines, driver-focused cockpit, performance-oriented suspension, iconic Subaru styling, rally heritage. Manual Value Proposition Manual Value Proposition: Provides authoritative, manufacturer-level repair and maintenance information, enabling owners and independent mechanics to perform accurate diagnostics and repairs, preserving vehicle integrity and performance. 📋 Manual Details Coverage Areas Coverage Areas: General Information, Engine (H4DOTC, H4SO), Body, Body Repair, Chassis, Mechanisms and Function, STI Specific Body, STI Specific Body Repair, STI Specific Chassis, STI Specific Engine, STI Specific General Information, STI Specific Transmission, STI Specific Wiring, Transmission, Wiring Page Count Page Count: Unknown (Typically extensive for FSMs, often 1000+ pages) Manual Type Manual Type: Factory Service Manual (FSM) / Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Systems Covered: Engine mechanical (H4DOTC, H4SO variants), Fuel system, Ignition system, Cooling system, Lubrication system, Exhaust system, Drivetrain (including AWD system and differentials), Manual and Automatic Transmissions, Clutch, Brakes (including ABS), Steering, Suspension, HVAC system, Body electrical systems, Exterior and Interior trim, Chassis components, Safety systems (SRS Airbags), Diagnostic procedures, Wiring diagrams Procedures Included Procedures Included: Disassembly and reassembly of all major components, Inspection and testing procedures, Component repair and rebuilding, Maintenance schedules and procedures, Troubleshooting diagnostic trees, Installation of parts, Torque specifications for critical fasteners, Electrical system diagnostics, Body panel repair and alignment, Fluid level checks and changes, Wheel alignment procedures, Brake service, Suspension component replacement Technical Depth Technical Depth: Comprehensive (from basic maintenance to complete engine and transmission rebuilds, including detailed diagnostics and electrical schematics) Torque Specifications: Detailed torque specifications for critical fasteners throughout the vehicle, ensuring proper assembly and preventing component damage. Diagnostic Tools Diagnostic Tools Covered: Procedures for using Subaru Select Monitor (SSM) or compatible OBD-II scanners for fault code retrieval and data analysis. Electrical Systems Wiring Diagrams: Comprehensive and detailed wiring diagrams for all electrical systems, including power distribution, lighting, engine control, chassis electronics, and comfort features. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High-resolution digital reproduction of original factory documentation, designed for clarity and readability of diagrams and text. Binding Type Binding Type: Not Applicable (Digital PDF Download) Paper Type Paper Type: Not Applicable (Digital PDF Download) Software Requirements Software Requirements: Adobe PDF Reader, WinRAR (for unzipping) Compatibility Compatibility: All Versions of Windows & Mac Searchability Searchability: PDF format allows for keyword searching of text content, facilitating quick access to specific information. ⚙️ Engine Specifications Primary Engine Wrx Engine Type: 2.5L Turbocharged Boxer (EJ255) Horsepower Wrx: Approx. 265 hp @ 5600 rpm Torque Wrx: Approx. 244 lb-ft @ 4000 rpm Primary Engine Sti Engine Type: 2.5L Turbocharged Boxer (EJ257) Horsepower Sti: Approx. 305 hp @ 6000 rpm Torque Sti: Approx. 290 lb-ft @ 4000 rpm Fuel System Fuel System: Multi-point Fuel Injection (MPI) with Electronic Throttle Control Engine Management Engine Management: ECU controlled, Subaru Select Monitor diagnostic capabilities Coolant Type Coolant Type: Subaru Super Coolant (Blue) or equivalent P-OAT coolant (typically 50/50 mix with distilled water) Engine Cooling Cooling System: Pressurized liquid cooling system with thermostat and radiator fan control. 🔧 Transmission Transmission Wrx Standard Transmission: 5-speed Manual Transmission Sti Standard Transmission: 6-speed Manual Optional Transmission: None offered for 2008 STI Drivetrain Drivetrain: Symmetrical All-Wheel Drive with Driver Controlled Center Differential (DCCD) on STI Transmission Fluid Wrx Transmission Fluid Type: Subaru Extra-GL5 75W-90 or equivalent Transmission Fluid Sti Transmission Fluid Type: Subaru Extra-GL5 75W-90 or equivalent (Front/Rear Diff Fluid also typically 75W-90) 📐 Dimensions Exterior Length Exterior Length: Approx. 174.6 inches (Hatchback), 180.3 inches (Sedan) Exterior Width Exterior Width: Approx. 70.1 inches Exterior Height Exterior Height: Approx. 57.7 inches (Hatchback), 58.1 inches (Sedan) Wheelbase Wheelbase: Approx. 103.0 inches Curb Weight Curb Weight: Approx. 3200-3400 lbs (Varies by trim and body style) 🛡️ Safety Features Ratings NHTSA Ratings: Generally good for its era, with 4 or 5 star ratings in frontal and side impact tests depending on specific configuration. Refer to NHTSA archives for precise scores. Active Features Active Features: ABS, Traction Control System (TCS), Electronic Stability Control (VDC - Vehicle Dynamics Control) Passive Features Passive Features: Frontal airbags, Side-impact airbags, Curtain airbags (depending on trim), Three-point seatbelts with pretensioners, Whiplash-reducing front headrests 💡 Technology Features Infotainment Infotainment System: Basic AM/FM/CD audio system, optional navigation system. Audio controls often mounted on the steering...