🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX STI Year: 2013 Codes Chassis Code: GV/GR (Hatchback) Engine Code Variant: EJ257 (2.5L Turbocharged Boxer) 👋 Introduction Market Position Category: Performance Compact Sedan/Hatchback Target Audience: Enthusiasts, rally fans, performance-oriented drivers, owners seeking in-depth maintenance and repair knowledge. Competitive Analysis Key Competitors: Mitsubishi Lancer Evolution, Subaru WRX (non-STI variants), Volkswagen Golf GTI/R, Ford Focus RS, Honda Civic Type R. Key Features Performance Focus: Emphasizes the performance capabilities and specific tuning aspects of the WRX STI model. User Friendliness: Designed to be accessible for basic users ('basic skills required') while providing depth for advanced tasks. Portability: Digital format allows for easy storage and access on various devices. 📋 Manual Details Coverage Areas Primary Coverage: Complete Service and Repair for 2013 Subaru Impreza WRX STI Page Count Estimated Page Count: 2000+ Manual Type Type: Factory Service Manual (FSM) / Repair Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine: Complete overhaul, disassembly, assembly, diagnosis, and repair of the EJ257 engine (including turbocharger system, intercooler, fuel injection, ignition, emissions controls). Transmission: Manual Transmission (TY757) servicing, repair, clutch system, driveline components (front/rear differentials, driveshafts, CV joints). Brakes: Hydraulic brake system, ABS, EBD, brake fluid service, caliper/rotor replacement, parking brake, bleeding procedures. Suspension: Front and rear suspension components, struts, springs, bushings, alignment procedures, AWD system servicing (e.g., DCCD operation). Steering: Power steering system (hydraulic), steering rack and pinion, tie rods, steering column. Electrical: Complete wiring diagrams, fuse box layouts, lighting systems, power windows, mirrors, locks, instrument cluster, starter, alternator, battery, ECU diagnostics, SRS (airbag) system. Body: Body panel removal/installation, door mechanisms, interior trim, glass replacement, exterior trim, bumpers, chassis repair principles. HVAC: Heating, Ventilation, and Air Conditioning system diagnosis and repair, refrigerant handling, A/C compressor, evaporator, condenser. Diagnostics: OBD-II diagnostic trouble codes (DTCs), Subaru Select Monitor (SSM) usage, diagnostic procedures for all major systems. Procedures Included Maintenance: Oil and filter changes, spark plug replacement, air filter replacement, cabin air filter replacement, brake fluid flush, coolant flush, differential fluid change, transfer case fluid change. Troubleshooting: Systematic troubleshooting guides for common and uncommon issues, diagnostic flowcharts, symptom-based diagnosis. Repair: Detailed step-by-step repair instructions for engine components, transmission, brakes, suspension, electrical systems, and bodywork. Overhaul: Complete engine rebuild procedures, transmission overhaul, differential rebuild. Installation: Component replacement and installation guides (e.g., turbocharger replacement, clutch replacement, suspension component upgrades). Technical Depth Depth: Comprehensive, covering from basic maintenance to complete engine and transmission rebuilds. Suitable for professional technicians and advanced DIY enthusiasts. 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text content for quick information retrieval. Resolution: High-resolution, clear diagrams and text. Print Quality Printability: Printable pages for workshop use. Binding Type Binding: N/A (Digital format) Paper Type Paper: N/A (Digital format) ⚙️ Engine Specifications Primary Engine Engine Type: Horizontally-Opposed (Boxer) Turbocharged DOHC Displacement: 2457 cc (2.5 Liters) Bore X Stroke: 99.5 mm x 79.0 mm Performance Horsepower: 305 hp @ 6000 rpm Torque: 290 lb-ft (393 Nm) @ 4000 rpm Redline: 7000 rpm Fuel System Fuel Delivery: Sequential Multi-Point Fuel Injection (MPI) Fuel Type: Premium Unleaded Gasoline (91 Octane or higher recommended) Cooling System Coolant Type: Subaru Super Coolant (Blue) or equivalent silicate-free, long-life coolant Coolant Capacity: Approx. 7.2 Liters (7.6 US Quarts) Lubrication System Oil Type: SAE 5W-30 Synthetic (API SN or ILSAC GF-5 certified) Oil Capacity: Approx. 5.1 Liters (5.4 US Quarts) with filter Oil Filter Part Number: Subaru 15208AA100 (example, check specific application) Turbocharger Turbo Model: IHI VF48 Intercooler: Top-mount, air-to-air 🔧 Transmission Standard Type: 6-Speed Manual (TY757) Gear Ratios 1-6: 3.333 / 2.000 / 1.333 / 1.000 / 0.777 / 0.650 Reverse Gear Ratio: 3.740 Final Drive Ratio: 4.111 Transmission Fluid Fluid Type: Subaru Extra-S Manual Transmission Fluid or equivalent API GL-5 75W-90 Fluid Capacity: Approx. 2.4 Liters (2.5 US Quarts) Features AWD System: Symmetrical All-Wheel Drive with Driver Controlled Center Differential (DCCD) Dccd Modes: Manual and Auto modes with varying front/rear torque bias settings. 📐 Dimensions Exterior Length: 179.9 inches (4570 mm) Width: 70.7 inches (1795 mm) Height: 58.1 inches (1475 mm) Wheelbase: 103.2 inches (2620 mm) Ground Clearance: Approx. 5.0 inches (127 mm) Wheel Base Pattern: 5x100 mm Wheel Size Standard: 17x8.0 inch (common for base WRX, STI often had 18-inch) Wheel Size Sti: 18x8.5 inch Tire Size Sti: 245/40R18 Weights Curb Weight: Approx. 3373 lbs (1530 kg) for Hatchback Gross Vehicle Weight Rating: Approx. 4431 lbs (2010 kg) Cargo Cargo Volume Hatchback: Approx. 19.0 cu ft (with rear seats up) 🛡️ Safety Features Ratings NHTSA Overall Rating: 4/5 Stars (for 2013 Impreza line, STI specifics may vary) IIHS Top Safety Pick: Yes (for 2013 Impreza line, STI specifics may vary) Active Features Traction Control: Yes, with SI-Drive system integration. Electronic Stability Control: Yes, Vehicle Dynamics Control (VDC). Antilock Brakes: Yes, 4-wheel disc ABS with Electronic Brake-force Distribution (EBD)....