🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX Year: 2011 Codes Chassis Code: GRF/GVF (Narrowbody & Widebody) Engine Code: EJ257 👋 Introduction Market Position Segment: Performance Compact/Sport Sedan/Hatchback Target Audience: Enthusiasts, performance drivers, tuners, professional mechanics Competitive Analysis Key Competitors: Mitsubishi Lancer Evolution, Volkswagen GTI, Ford Focus RS (region dependent) Key Features Performance Focus: Symmetrical All-Wheel Drive, turbocharged boxer engine, sporty handling Manual Utility: Provides in-depth technical guidance for maintenance and repair of a high-performance vehicle 📋 Manual Details Coverage Areas Primary Coverage: Mechanical, Electrical, Body, Diagnostics, Troubleshooting Secondary Coverage: Scheduled Maintenance, Specifications, Wiring Diagrams Page Count Estimated Pages: 2500+ Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: 2.5L Turbocharged EJ257 (incl. assembly, disassembly, timing, cooling, lubrication) Transmission: 6-Speed Manual (TY856WB1CA) - repair, overhaul, clutch system Drivetrain: All-Wheel Drive (Symmetrical AWD), differentials (front, rear, center), driveshafts, CV joints Suspension: Front struts (inverted), rear multi-link, bushings, alignment specifications Brakes: Front: 4-piston Brembo, Rear: 2-piston Brembo, ABS, EBD, brake fluid specifications Steering: Power assisted rack and pinion, steering column, alignment Electrical: Battery, charging system, ignition system, starter, lighting, audio, power windows/locks, fuses, relays, wiring diagrams HVAC: Air conditioning system, heater, climate control Bodywork: Body panels, doors, hood, trunk, interior trim, glass, bumpers, chassis structure Diagnostics: OBD-II (On-Board Diagnostics), fault codes (DTCs), sensor testing, ECU diagnostics Procedures Included Maintenance: Oil changes, filter replacements, spark plug replacement, fluid checks and changes, belt inspections Repair: Engine overhaul, turbocharger replacement, transmission rebuild, suspension component replacement, brake caliper overhaul, electrical component repair Troubleshooting: Step-by-step diagnostic procedures for common and uncommon issues, symptoms analysis Installation: Component installation and removal procedures (e.g., turbo, injectors, suspension parts) Specifications: Torque specifications, clearance measurements, alignment angles, fluid capacities Technical Depth Depth: Comprehensive, suitable for professional technicians and advanced DIY enthusiasts Detail Level: Detailed step-by-step instructions with illustrations/diagrams (assumed from typical workshop manuals) 📊 Manual Specifications File Format File Type: PDF Searchability: Likely text-searchable (standard for professional PDFs) Print Quality: High resolution, suitable for printing individual pages or sections Binding Type Binding: N/A (Digital PDF) Paper Type Paper: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Horizontally Opposed (Boxer) 4-Cylinder, turbocharged and intercooled Displacement: 2.5 Liters (2457 cc) Bore X Stroke: 99.5 mm x 80.0 mm Compression Ratio: 8.2:1 Valve Train: DOHC (Dual Overhead Camshafts), 4 valves per cylinder, Subaru 'Variable Valve Lift and Timing' (VVL-i) on exhaust side Fuel Delivery: Multi-point Fuel Injection (MPI) with Top Feed Injectors Ignition System: Coil-on-plug, Distributorless Ignition System (DIS) Performance Horsepower: 305 hp @ 6000 rpm Torque: 290 lb-ft (393 Nm) @ 4000 rpm Turbocharger: Twin-scroll turbocharger (e.g., IHI VF48 or similar, depending on market) Fuel System Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) 🔧 Transmission Standard Type: 6-Speed Manual (TY856WB1CA) Drivetrain: Symmetrical All-Wheel Drive with viscous coupling center differential and Torsen rear differential Optional Type: N/A (WRX models typically only offered manual) Features Clutch Type: Hydraulically operated, single dry plate 📐 Dimensions Exterior Length: 179.3 in (4555 mm) Width: 70.1 in (1780 mm) Height: 58.1 in (1475 mm) Wheelbase: 103.1 in (2619 mm) Weights Curb Weight: Approx. 3350-3450 lbs (1520-1565 kg) 🛡️ Safety Features Ratings IIHS Front Crash Rating: Good (for 2011 model year chassis generation) NHTSA Overall Rating: 4 Stars (for 2011 model year chassis generation) Active Features Traction Control: Yes (Subaru VDC - Vehicle Dynamics Control) Stability Control: Yes (Subaru VDC - Vehicle Dynamics Control) ABS: Yes (Anti-lock Braking System) Ebd: Yes (Electronic Brake-force Distribution) Passive Features Airbags: Front airbags, front side-impact airbags, front and rear side-curtain airbags Seatbelts: 3-point height-adjustable front seatbelts with pretensioners and load limiters, rear 3-point seatbelts 💡 Technology Features Infotainment Head Unit: Standard factory AM/FM/CD/MP3 audio system with auxiliary input. Optional navigation system available. Speakers: Typically 6-speaker system. Driver Assistance Cruise Control: Standard Hill Start Assist: Not typically equipped on this model year WRX. Connectivity Bluetooth: Available on some trim levels/optional upgrades, but not standard across all 2011 WRX models. 🔧 Maintenance Service Intervals Oil Change Interval: Typically 3,750 miles or 6 months (severe duty) or 7,500 miles or 12 months (normal duty) - refer to manual for specifics Engine Air Filter: Inspect every 15,000 miles, replace as needed (more frequently in dusty conditions) Cabin Air Filter: Replace every 15,000 miles or 12 months Spark Plugs: Replace at 60,000 miles (Iridium type recommended) Timing Belt: Not applicable; uses a timing chain (check manual for inspection intervals if applicable, typically lifetime but requires inspection) Fluid Specifications Engine Oil: SAE 5W-30 Synthetic (API SN or ILSAC GF-5 compliant), Capacity: 5.8 US quarts (5.5 liters) with filter change Coolant: Subaru Super Coolant (Blue) or equivalent, 50/50 mix with distilled water. Capacity: Approx. 7.0 US quarts (6.6 liters) Transmission Fluid: Subaru Genuine Gear Oil API GL-5, SAE 75W-90. Capacity: Approx. 3.4 US quarts (3.2 liters)...