🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX STI Year: 2011 Codes Chassis Code: GV / GR Engine Code: EJ257 👋 Introduction Market Position Segment: Performance Compact Sedan/Hatchback Target Audience: Enthusiasts, rally fans, performance driving community Competitive Analysis Key Rivals: Mitsubishi Lancer Evolution, Ford Focus RS, Volkswagen Golf GTI/R Key Features Performance Drivetrain: Turbocharged Boxer engine, Symmetrical All-Wheel Drive Suspension Tuning: Performance-tuned suspension for agile handling Chassis Stiffness: Reinforced chassis for rally-bred performance Braking System: Performance braking system, often Brembo equipped 📋 Manual Details Coverage Areas Manual Type: Workshop Service Repair Manual Language: English Format: Digital Download (Printable) Page Count Estimated Pages: 1000+ 📖 Manual Coverage Systems Covered Engine Mechanical: Complete overhaul, component testing, torque specifications Engine Management System: ECU diagnosis, sensor testing, fuel injection, ignition timing Transmission Manual: Clutch system, gearbox overhaul, gear ratios, shift linkage Transmission Automatic: Not applicable for WRX STI model Drivetrain: Symmetrical All-Wheel Drive system, differentials, driveshafts, prop shaft Suspension: Front/rear suspension components, alignment specifications, damper service Brakes: ABS system, brake fluid specifications, caliper/rotor service, parking brake Steering: Power steering system, steering rack, column components Electrical System: Wiring diagrams, battery, alternator, starter, lighting, fuses, relays Climate Control: HVAC system diagnosis, refrigerant, compressor service Body And Chassis: Body panel removal/installation, chassis components, collision repair basics Interior: Seating, dashboard, trim panel removal, airbags Procedures Included Routine Maintenance: Oil changes, filter replacements, fluid checks, spark plug replacement Troubleshooting: Diagnostic procedures for common faults, symptom-based diagnostics Component Repair: Step-by-step instructions for removing, repairing, and reinstalling major components Overhaul Procedures: Complete engine and transmission rebuild procedures Wiring Diagrams: Detailed electrical schematics for all systems Specifications Data: Torque values, clearances, fluid capacities, electrical specifications Diagnostic Trouble Codes: Listing and interpretation of OBD-II codes Technical Depth Depth Level: Comprehensive Factory Level Diagnostics: Advanced diagnostics, scan tool usage, sensor data interpretation Rebuilding: Full rebuild procedures for engine, transmission, differentials 📊 Manual Specifications File Format Digital Format: PDF Print Quality Reproducibility: High resolution, suitable for printing professional quality pages Binding Type Print Binding: Not Applicable (Digital Download) Paper Type Print Paper Type: Not Applicable (Digital Download) Searchability Text Search: Searchable PDF content for quick information retrieval ⚙️ Engine Specifications Primary Engine Engine Type: EJ257 Turbocharged Boxer 4-Cylinder Displacement: 2.5 Liters (2457 cc) Bore X Stroke: 99.5 mm x 79.0 mm Compression Ratio: 8.2:1 Performance Horsepower: 305 hp @ 6000 rpm Torque: 290 lb-ft @ 4000 rpm Redline: 6500 rpm Fuel System Fuel Type: Unleaded Premium (91+ Octane Recommended) Fuel Delivery: Multi-point Fuel Injection (MPI) Turbocharger: Twin-Scroll Turbocharger with Intercooler Fluid Specifications Engine Oil Type: SAE 5W-30 Synthetic (API SN/SP or ILSAC GF-5/GF-6) Engine Oil Capacity: 4.8 US quarts (4.5 Liters) with filter change Coolant Type: Subaru Super Coolant (Blue) Coolant Capacity: 7.4 US quarts (7.0 Liters) 🔧 Transmission Standard Transmission Type: 6-Speed Manual Transmission Transmission Code: TY856WB1AA Features All Wheel Drive: Symmetrical All-Wheel Drive with Driver-Controlled Center Differential (DCCD) Differentials: Front Helical Limited Slip Differential (LSD), Rear Mechanical Limited Slip Differential (LSD) Fluid Specifications Manual Transmission Fluid Type: Subaru Extra-S GL5 75W-90 or equivalent Manual Transmission Fluid Capacity: 2.5 US quarts (2.4 Liters) Front Differential Fluid Type: Subaru Extra-S GL5 75W-90 or equivalent Front Differential Fluid Capacity: 0.9 US quarts (0.85 Liters) Rear Differential Fluid Type: Subaru Extra-S GL5 75W-90 or equivalent Rear Differential Fluid Capacity: 0.9 US quarts (0.85 Liters) 📐 Dimensions Exterior Length: 179.7 inches (4565 mm) Width: 70.7 inches (1795 mm) Height: 57.7 inches (1465 mm) Wheelbase: 103.0 inches (2615 mm) Front Track: 60.2 inches (1530 mm) Rear Track: 60.0 inches (1525 mm) Ground Clearance: 5.1 inches (130 mm) Weights Curb Weight: 3397 lbs (1541 kg) (Sedan) / 3417 lbs (1550 kg) (Hatchback) Gross Vehicle Weight Rating: 4500 lbs (2041 kg) Cargo Trunk Capacity: 11.3 cu ft (Sedan) Hatch Cargo Capacity: 19.1 cu ft (Seats Up) / 43.8 cu ft (Seats Down) (Hatchback) Wheels Tires Wheel Size: 18 x 8.5 inches Bolt Pattern: 5 x 114.3 mm (5 x 4.5 inches) Tire Size: 245/40R18 Tire Pressure Front: 30 psi Tire Pressure Rear: 30 psi 🛡️ Safety Features Ratings NHTSA Front Crash: 5-Star (Driver & Passenger) NHTSA Side Crash: 5-Star (Front & Rear Seat) NHTSA Rollover: 4-Star Active Features Traction Control: Standard Electronic Stability Control: Standard (Vehicle Dynamics Control - VDC) Antilock Braking System: Standard (ABS) Brake Assist: Standard Passive Features Airbags Front: Driver and Front Passenger Airbags Airbags Side: Front Side-Impact Airbags Airbags Curtain: Front and Rear Side-Curtain Airbags Seatbelts: 3-Point ELR Front and Rear Seatbelts with Pretensioners Child Seat Anchors: LATCH System 💡 Technology Features Infotainment Audio System: Premium audio system with CD player, MP3 compatibility, auxiliary input, and optional navigation. Display: Multi-function display in dashboard for vehicle settings and audio information. Driver Assistance Cruise Control: Standard cruise control system. Keyless Entry: Standard keyless entry system. Intermittent Wipers: Adjustable intermittent front wipers. Connectivity Usb Input: Optional USB input for...