🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX STI Model Generation: Third Generation (GR/GH/GE) Model Years Covered: 2008, 2009 Chassis Code: GR/GH/GE Codes Engine Code Primary: EJ257 👋 Introduction Market Position Vehicle Segment: Performance Compact Sedan/Hatchback (WRC Homologation Special) Competitive Analysis Key Competitors: Mitsubishi Lancer Evolution, Subaru WRX (non-STI variants), Volkswagen Golf GTI, Mazdaspeed3 Key Features Performance Focus: All-wheel drive, turbocharged Boxer engine, performance-tuned suspension and braking systems Manual Value Proposition Benefit: Enables DIY repairs and maintenance, saving significant costs compared to dealership services 📋 Manual Details Coverage Areas Primary Coverage: Complete Service, Repair, and Diagnostics Supplemental Coverage: All applicable supplement manuals included Page Count Estimated Page Count: Likely over 2000 pages (typical for a complete factory service manual) Manual Type Type: Factory Service Manual / Repair Shop Manual Language Language: English Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Engine: General Information, Maintenance, Adjustments, Engine Mechanical, Engine Lubrication, Engine Cooling, Engine Fuel System, Engine Electrical, Engine Control System (ECU/ECM), Emissions Control Transmission: Manual Transmission (TY856), Clutch System, Transmission Fluid Drivetrain: Driveshaft, Rear Differential, AWD System, Front Axle, Rear Axle Chassis: Suspension System (Front & Rear), Steering System, Wheel Alignment, Chassis Lubrication Brakes: Brake System (Hydraulic & Mechanical), ABS, Brake Fluid, Parking Brake Electrical: Battery, Charging System, Starting System, Ignition System, Lighting System, Instrumentation, Wipers and Washers, Audio System, Power Windows, Power Locks, HVAC Controls, Cruise Control, SRS (Airbag) System, Body Control Module (BCM) Wiring Diagrams: Comprehensive, detailed wiring diagrams for all electrical systems Body: Body Exterior, Interior Trim, Bumpers, Doors, Hood, Trunk/Hatch Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection and replacement Repairs: Engine component overhaul, transmission rebuild, suspension component replacement, brake caliper and rotor service, electrical component diagnosis and replacement, body panel repair Diagnostics: Troubleshooting charts, diagnostic trouble codes (DTCs), symptom-based diagnostics, electrical circuit testing Adjustments: Clutch adjustment, throttle cable adjustment, parking brake adjustment Aftermarket Projects: Information and specifications suitable for supporting aftermarket modifications and upgrades Technical Depth Depth: Complete teardown and rebuild coverage, detailed step-by-step instructions, torque specifications, special tool requirements, diagnostic procedures 📊 Manual Specifications File Format Compatibility: Windows, macOS, Linux, Tablets, Smartphones Print Quality Features: Fully printable, zoom in/out capability, viewable on all digital devices Binding Type Type: N/A (Digital Download) Paper Type Type: N/A (Digital Download) Searchability Feature: Likely searchable text content within the PDF for quick information retrieval ⚙️ Engine Specifications Primary Engine Engine Type: Horizontally Opposed (Boxer), Turbocharged, Intercooled Displacement: 2.5 Liters (2457 cc) Performance Horsepower: Approx. 305 hp @ 6000 rpm (US Spec) Torque: Approx. 290 lb-ft @ 3500 rpm (US Spec) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Recommended Fuel: Premium Unleaded (91 Octane or higher) Engine Management ECU Type: Subaru Engine Control Module (ECM) 🔧 Transmission Standard Type: 6-Speed Manual Transmission Optional Type: N/A for STI model Features Dccd: Driver Controlled Center Differential (DCCD) Gear Ratios: Specific gear ratios detailed in manual (e.g., 1st: 3.636, 2nd: 2.250, 3rd: 1.593, 4th: 1.181, 5th: 0.916, 6th: 0.774) Fluid Specifications Manual Transmission Fluid: Subaru Extra-S Gear Oil (or equivalent API GL-5 rated 75W-90 synthetic gear oil) 📐 Dimensions Exterior Length: Approx. 179.1 inches (GR Hatchback) Width: Approx. 70.1 inches Height: Approx. 57.1 inches (GR Hatchback) Wheelbase Wheelbase: Approx. 103.1 inches Weights Curb Weight: Approx. 3417 lbs (GR Hatchback) 🛡️ Safety Features Ratings NHTSA Front Impact: 5-Star (for 2008 model year) IIHS Top Safety Pick: Not rated or rated 'Good' in various categories depending on test year Active Features AWD: Subaru Symmetrical All-Wheel Drive ABS: Anti-lock Braking System (ABS) Vcs: Vehicle Stability Control (VSC) / Traction Control System (TCS) Passive Features Airbags: Front airbags, front side-impact airbags, side curtain airbags Seatbelts: 3-point front and rear seatbelts with pretensioners and force limiters 💡 Technology Features Infotainment Audio System: Standard AM/FM/CD player with auxiliary input, optional navigation system Driver Assistance Cruise Control: Standard cruise control Connectivity Auxiliary Input: Standard 3.5mm auxiliary audio input jack 🔧 Maintenance Service Intervals Oil Change: Every 3,750 miles or 6 months (severe driving conditions) / 7,500 miles or 12 months (normal driving conditions) Engine Oil Filter: Replace with every oil change Engine Air Filter: Inspect every 15,000 miles, replace as needed Cabin Air Filter: Replace every 15,000 miles Spark Plugs: Replace at 60,000 miles Transmission Fluid: Change every 30,000 miles Coolant Flush: First flush at 60,000 miles, then every 30,000 miles thereafter Fluid Specifications Engine Oil: SAE 5W-30, API SG or higher, ILSAC GF-3 or higher (check manual for exact spec and capacity) Brake Fluid: DOT 3 or DOT 4 Coolant: Subaru Super Coolant (Blue) or equivalent silicate-free, long-life ethylene glycol coolant Known Issues Engine Knock: Potential for engine knock/detonation under heavy load or with sub-optimal fuel, especially if engine management is modified. Manual details proper fuel use and potential causes. Clutch Wear: Can experience faster...