🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX STI RS Model Generation: Third Generation (GE/GH/GR/GV) Codes Chassis Codes Covered: GR (Hatchback), GV (Sedan) Engine Codes Covered: EJ207 (JDM STI), EJ255 (USDM WRX/STI), EJ257 (JDM STI) 👋 Introduction Market Position Segment: Performance Compact / Rally Sport Sedan & Hatchback Competitive Analysis Competitors: Mitsubishi Lancer Evolution, Subaru Impreza WRX (non-STI variants), Volkswagen GTI, Mazdaspeed3. Key Features Performance Orientation: Iconic turbocharged boxer engine, Symmetrical All-Wheel Drive, performance-tuned suspension and brakes. Rally Heritage: Direct lineage from Subaru's WRC success, offering a true rally-bred driving experience. Target Audience Enthusiast Focus: Enthusiasts and owners seeking detailed technical information for maintenance, modification, and performance optimization. 📋 Manual Details Coverage Areas Coverage: All models, all repairs A-Z Page Count Estimated Page Count: 1500+ Manual Type Type: Service and Repair Workshop Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Detailed diagnosis, repair, and overhaul procedures for EJ207, EJ255, EJ257 engines including turbocharger systems, fuel injection, ignition, cooling, lubrication, and emission control. Transmission: Manual (6-speed) and automatic transmission repair, clutch replacement, driveline components, including AWD system (DCCD). Brakes: Front and rear brake system diagnostics, ABS, EBD, brake pad and rotor replacement, caliper overhaul, fluid bleeding procedures. Suspension: Front and rear suspension components, struts, springs, control arms, sway bars, alignment procedures, STI specific suspension tuning. Steering: Power steering system diagnosis and repair, steering rack replacement, alignment. Electrical: Complete wiring diagrams, ECU diagnostics, starter, alternator, battery, lighting systems, interior electronics, infotainment, body control module (BCM) troubleshooting. Bodywork: Body panel replacement, door and window mechanisms, interior trim, chassis and structural repair, collision repair guidelines. HVAC: Air conditioning system diagnosis and repair, heater core replacement, blower motor, climate control unit. Exhaust: Exhaust system components, catalytic converter replacement, muffler repair, turbo-back exhaust systems. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, spark plug replacement, coolant flushes, brake fluid service. Troubleshooting: Systematic diagnostic procedures for common and complex issues, fault code interpretation, component testing. Repair: Detailed step-by-step instructions for all major and minor repair operations, including engine rebuilds, transmission overhauls, and body panel replacement. Installation: Instructions for replacing and installing various components and systems. Diagnostics: Advanced diagnostic techniques for all vehicle systems, including use of Subaru Select Monitor (SSM). Technical Depth Depth: Comprehensive, covering basic maintenance to full engine and transmission rebuilds, including performance tuning considerations. 📊 Manual Specifications File Format Quality: High-resolution, text-searchable PDF with clear diagrams and images. Print Quality Print Readability: Designed for easy printing of individual pages or sections with clear text and graphics. Binding Type Binding: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Horizontally Opposed (Boxer) Turbocharged DOHC 16-Valve Displacements Covered: 2.0L (EJ207) and 2.5L (EJ255, EJ257) Performance Horsepower Ej207 Jdm Sti: 276 hp @ 6200 rpm (JDM spec) Torque Ej207 Jdm Sti: 258 lb-ft @ 4000 rpm (JDM spec) Horsepower Ej255 Usdm Wrx: 230 hp @ 5200 rpm (USDM WRX) Torque Ej255 Usdm Wrx: 235 lb-ft @ 2000 rpm (USDM WRX) Horsepower Ej257 Usdm Sti: 305 hp @ 6000 rpm (USDM STI) Torque Ej257 Usdm Sti: 290 lb-ft @ 4000 rpm (USDM STI) Fuel System Fuel Delivery: Sequential Electronic Fuel Injection (Multi-port) Fuel Type: Premium Unleaded Gasoline (91+ Octane Recommended) Ignition Ignition System: Distributorless Electronic Ignition (Coil-on-Plug) Turbocharging Turbocharger Type: Twin-scroll or Variable Geometry Turbocharger (VGT) depending on model and region. Cooling Cooling System: Pressurized Liquid Cooling System Lubrication Oil Capacity Quarts: 4.8 (EJ257), 4.8 (EJ255), 4.2 (EJ207) Oil Type Recommended Oil: SAE 0W-30 or 5W-30 Synthetic (API SN or higher) Oil Filter Part Number Oil Filter: Subaru: 15208AA15A, aftermarket options available. 🔧 Transmission Standard Type: 6-Speed Manual (TY856WB1CA for STI, TY757 for WRX) Optional Type: 5-Speed Automatic (Limited availability on certain WRX trims) Features AWD System: Symmetrical All-Wheel Drive with Driver Controlled Centre Differential (DCCD) on STI models. Gear Ratios Sti: Specific ratios vary by model year and region, but are performance-oriented for acceleration. Fluid Specs Manual Transmission Fluid: Subaru Extra-S Gear Oil (75W-90 GL-5) or equivalent API GL-5 specification. Fluid Capacity Manual Transmission Capacity: Approx. 3.0-3.5 liters (refer to manual for exact capacity) 📐 Dimensions Exterior Wheelbase Hatchback: 103.2 inches (2621 mm) Wheelbase Sedan: 103.2 inches (2621 mm) Length Hatchback: 173.8 inches (4415 mm) Length Sedan: 180.9 inches (4595 mm) Width: 70.1 inches (1780 mm) Height Hatchback: 57.7 inches (1465 mm) Height Sedan: 58.1 inches (1475 mm) Weights Curb Weight Sti Hatch: 3,373 lbs (1530 kg) Curb Weight Sti Sedan: 3,351 lbs (1520 kg) Wheel Bolt Pattern: 5x100mm Wheels Tires Standard Wheel Size Sti: 18 x 8.5 inches Standard Tire Size Sti: 245/40R18 🛡️ Safety Features Ratings NHTSA Front Crash Test: 5-Star (for driver and passenger) - 2006 model year. IIHS Side Impact Test: Good (for 2006 models with side airbags) Active Features Traction Control: Standard (Subaru VDC - Vehicle Dynamics...