🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX STI RS Model Variant: WRX STI RS Model Generation: Third Generation (GE/GH/GR/GV) Model Years Covered: 2006-2007 Codes Chassis Codes: GDB (Specific to STI models within this generation range) 👋 Introduction Market Position Market Position: Performance-oriented compact sedan/hatchback, competitor to Mitsubishi Lancer Evolution and Volkswagen Golf GTI. Competitive Analysis Competitive Analysis: The 2006-2007 Impreza WRX STI represented Subaru's pinnacle of rally-bred performance in the Impreza line, offering advanced all-wheel-drive dynamics and a potent turbocharged engine. Its closest rival during this period was the Mitsubishi Lancer Evolution IX. Key Features Key Features: Symmetrical All-Wheel Drive, turbocharged Boxer engine, performance-tuned suspension, prominent rear spoiler (on STI models), driver-focused cockpit. 📋 Manual Details Coverage Areas Coverage Areas: All service and repair jobs Page Count Page Count: Undetermined (typically extensive for factory service manuals) Manual Type Manual Type: Factory Type PDF Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Systems Covered: Engine mechanical, engine electrical, fuel system, exhaust system, transmission (manual & automatic), drivetrain, suspension, steering, brakes, climate control, body electrical, chassis, interior, safety systems, diagnostic procedures, wiring diagrams Procedures Included Procedures Included: Routine maintenance, inspections, troubleshooting, component removal and installation, component overhaul, diagnostics, electrical system tracing, fluid changes, brake servicing, suspension alignment, engine tuning, body repair procedures Technical Depth Technical Depth: Comprehensive (from basic maintenance to full engine rebuilds and advanced diagnostics) 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: Professional Quality, highly detailed Binding Type Binding Type: Digital Download (Not applicable for print binding) Paper Type Paper Type: Not applicable (digital format) ⚙️ Engine Specifications Primary Engine Engine Code: EJ257 (for WRX STI models) Engine Type: 2.5L Turbocharged Boxer-4 (EJ257) Displacement: 2457 cc Bore X Stroke: 99.5 mm x 79.0 mm Compression Ratio: 8.2:1 Horsepower: 300 hp @ 6000 rpm (SAE Net) Torque: 300 lb-ft @ 4000 rpm (SAE Net) Fuel System Fuel Induction: Multi-point Fuel Injection (MPI) with Turbocharger Recommended Fuel: Premium Unleaded (91 Octane or higher) Performance 0-60 Mph: Approx. 4.4 seconds (depending on transmission and conditions) 🔧 Transmission Standard Transmission Type: 6-speed Manual Transmission (STI models) Optional Transmission Type: 4-speed Automatic Transmission (WRX models, not typically STI) Features Drivetrain: Symmetrical All-Wheel Drive with Driver Controlled Center Differential (DCCD) Sti Center Differential Modes: Auto, Manual (Locked, Diff. Bias Control) 📐 Dimensions Exterior Wheelbase: 103.1 inches (2619 mm) Length: 173.8 inches (4415 mm) Width: 69.7 inches (1770 mm) Height: 56.1 inches (1425 mm) Weights Curb Weight: Approx. 3,373 lbs (1530 kg) for STI Sedan 🛡️ Safety Features Ratings NHTSA Rollover Rating: 4/5 Stars (for Sedan models) Active Features Active Features: All-Wheel Drive, Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Brake Assist (BA), Traction Control System (TCS), Vehicle Dynamics Control (VDC) Passive Features Passive Features: Front airbags, front side-impact airbags, front and rear curtain airbags, front seatbelt pretensioners, crumple zones 💡 Technology Features Infotainment Infotainment System: Factory-installed audio system with CD player, AM/FM radio. Optional premium audio systems available. Driver Assistance Driver Assistance: ABS, EBD, BA, TCS, VDC Connectivity Connectivity: Limited by modern standards; typically no integrated Bluetooth or USB ports from factory, but aftermarket options are widely available. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,750 miles or 3 months (severe driving) / 7,500 miles or 6 months (normal driving) Air Filter Replacement: Every 15,000 miles or 12 months Spark Plug Replacement: Every 30,000-60,000 miles (depending on plug type) Fluid Specifications Engine Oil Type: SAE 0W-30 Synthetic (API Service SM or higher, ILSAC GF-4) Engine Oil Capacity: 5.5 US quarts (5.2 liters) with filter change Coolant Type: Subaru Super Coolant (Blue) or equivalent silicate-free, long-life coolant Transmission Fluid Type Manual: SAE 75W-90 Gear Oil (API GL-5) Transmission Fluid Capacity Manual: Approx. 2.4 US quarts (2.3 liters) Differential Fluid Type Front: SAE 75W-90 Gear Oil (API GL-5) Differential Fluid Type Rear: SAE 75W-90 Gear Oil (API GL-5) Known Issues Known Issues: Piston ring land failure/ringland fatigue (especially with aggressive tuning), turbocharger wear/failure, clutch wear (heavy use), oil consumption, head gasket issues (less common on EJ257 than earlier EJ25 variants but possible), differential failures if pushed hard or poorly maintained. 📚 Vehicle History Brand Heritage Brand Heritage: Subaru has a long-standing heritage in motorsports, particularly in the World Rally Championship (WRC), where the Impreza, especially the WRX STI, achieved significant success, influencing its road-going counterparts. Model Evolution Model Evolution: The third generation Impreza (GE/GH/GR/GV) represented a significant departure in styling from previous generations, featuring a more rounded and less aggressive design. The STI models retained their performance DNA with enhanced engine output, suspension tuning, and the DCCD. Production Production Years Global: 2005-2007 (for this specific generation and body styles) Manufacturing Locations: Japan 🏆 Awards & Recognition Recognitions Recognitions: Consistently praised by automotive journalists for its handling, all-wheel-drive capability, and performance-to-price ratio in its...