🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX STI Year: 2014 Codes Chassis Code: GVB/GVF Engine Code: EJ257 👋 Introduction Market Position Segment: Performance Compact Sedan/Hatchback Usp: Iconic turbocharged boxer engine, Symmetrical All-Wheel Drive, rally heritage Competitive Analysis Key Competitors 2014: Mitsubishi Lancer Evolution, Ford Focus ST, Volkswagen Golf GTI, Honda Civic Si Key Features Vehicle Performance Focus: High-performance variant of the Subaru Impreza line, engineered for spirited driving and motorsport applications. Key Features Manual Manual Value Proposition: Provides Subaru technicians and owners with the definitive guide to maintain, diagnose, and repair the 2014 WRX STI, ensuring optimal performance and longevity. 📋 Manual Details Coverage Areas Primary Coverage: Complete factory service and repair Specific Areas: Engine, Drivetrain, Suspension, Brakes, Electrical System, HVAC, Body, Chassis Page Count Estimated Pages: 1000+ Manual Type Type: Factory Service Repair Manual Language Language: English Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Engine Management: ECU diagnostics, fuel injection, ignition timing, sensor data Drivetrain: All-Wheel Drive (AWD) system, DCCD (Driver Controlled Center Differential), transmissions (manual and automatic), differentials, axles Suspension Steering: Front and rear suspension components, struts, shocks, bushings, power steering system Braking System: Brake system diagnostics, hydraulic components, ABS, EBD, brake fluid specifications Electrical System: Wiring diagrams, fuses, relays, lighting, starter, alternator, battery, power windows, locks Comfort Convenience: HVAC system, climate control, power seats, sound system, keyless entry Body Chassis: Body panel removal/installation, structural components, corrosion protection Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks Diagnostics: Troubleshooting guides, symptom-based diagnostics, DTC (Diagnostic Trouble Code) interpretation Repair Rebuild: Engine teardown and reassembly, transmission overhaul, suspension component replacement, brake caliper rebuilding Installation: Component installation, accessory fitting, aftermarket part integration guidelines Technical Depth Depth: Comprehensive, covering from basic fluid checks to complete engine rebuilds and advanced electrical diagnostics Diagnostic Tools: Information on using Subaru Select Monitor (SSM) or compatible OBD-II scanners 📊 Manual Specifications File Format Format Details: High-resolution PDF, searchable text for easy navigation Print Quality Print Readability: Designed for clear printing of individual pages or entire sections Binding Type Binding For Print: Not applicable (digital download), but designed for spiral or binder binding if printed Paper Type Recommended Paper For Print: Standard copier paper suitable for workshop use ⚙️ Engine Specifications Primary Engine Engine Type: Horizontally-opposed (Boxer), Turbocharged, Intercooled, DOHC, 16-valve, 4-cylinder Displacement: 2.5 Liters (2457 cc) Bore X Stroke: 99.5 mm x 79.0 mm Performance Horsepower: 305 hp @ 6000 rpm Torque: 290 lb-ft @ 4000 rpm Fuel System Injection Type: Multi-point Fuel Injection (MPI) with Electronic Throttle Control (ETC) Fuel Requirement: Premium Unleaded Gasoline (91 Octane or higher recommended) Cooling System Cooling Type: Pressurized liquid cooling system Lubrication System Oil Capacity: 5.5 US Quarts (5.2 Liters) with filter change Oil Viscosity: SAE 5W-30 (check owner's manual for specific climate/usage recommendations) Engine Codes Specific Engine Variant: EJ257 (EJ25 - WRX STI specific variant) 🔧 Transmission Standard Transmission Type: 6-speed Manual Transmission (TY75) Optional Transmission Type: Not available for 2014 WRX STI model year Features Dccd: Driver Controlled Center Differential (DCCD) with automatic mode and manual settings Fluid Specifications Manual Transmission Fluid: Subaru Extra-S Gear Oil (GL-5, 75W-90) or equivalent Differential Fluid Front: Subaru Extra-S Gear Oil (GL-5, 75W-90) or equivalent Differential Fluid Rear: Subaru Extra-S Gear Oil (GL-5, 75W-90) or equivalent 📐 Dimensions Exterior Length: 173.8 inches (4415 mm) Width: 70.7 inches (1795 mm) Height: 57.7 inches (1465 mm) Wheelbase: 103.0 inches (2615 mm) Track Width Front: 60.0 inches (1525 mm) Track Width Rear: 59.4 inches (1510 mm) Ground Clearance: 5.0 inches (127 mm) Weights Curb Weight: Approx. 3,373 lbs (1530 kg) Gross Vehicle Weight Rating: Approx. 4,585 lbs (2080 kg) Cargo Trunk Capacity Sedan: 11.3 cu ft (320 L) Cargo Capacity Hatchback: 22.0 cu ft (623 L) behind rear seats, 47.7 cu ft (1350 L) with rear seats folded 🛡️ Safety Features Ratings NHTSA Overall Rating: 4-Star (for 2014 Impreza model, WRX STI specific may vary slightly) IIHS Top Safety Pick: Yes (for 2014 Impreza model) Active Features Traction Control: Standard Electronic Stability Control: Standard (Vehicle Dynamics Control - VDC) All Wheel Drive: Symmetrical All-Wheel Drive (standard) ABS: Anti-lock Braking System (ABS) with Electronic Brake-force Distribution (EBD) Passive Features Airbags Front: Dual-stage front airbags Airbags Side: Front side-impact airbags Airbags Curtain: Front and rear side-curtain airbags Seatbelts: 3-point front and rear seatbelts with pretensioners and force limiters 💡 Technology Features Infotainment Head Unit: Standard touchscreen infotainment system with CD player, USB/iPod integration, Bluetooth, and auxiliary input. Audio System: Available Harman Kardon premium audio system on select trims. Driver Assistance Cruise Control: Standard Tire Pressure Monitoring System: Standard Connectivity Bluetooth: Standard for hands-free calling and audio streaming Performance Tech Si Drive: Subaru Intelligent Drive (SI-DRIVE) system with Intelligent (I), Sport (S), and Sport Sharp (S#) modes affecting throttle response, engine mapping, and DCCD behavior. Dccd: Driver Controlled Center Differential...