🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX STI Year: 2006 Generation Generation Code: GDB/GGB (Third Generation) Codes Chassis Codes: GDB-E (Sedan), GGB-E (Wagon) 👋 Introduction Market Position Segment: Performance Compact Sedan/Wagon ( Rally-bred homologation special) Competitive Analysis Key Competitors: Mitsubishi Lancer Evolution, Subaru WRX (non-STI variants), Volkswagen Golf GTI (in spirit), Ford Focus RS Key Features Performance Focus: Engineered for rally racing homologation, emphasizing power, handling, and all-wheel-drive capability. AWD System: Symmetrical All-Wheel Drive with Driver Controlled Center Differential (DCCD) for advanced traction management. Braking System: Iconic Brembo braking system for superior stopping power and heat management. 📋 Manual Details Coverage Areas Primary Regions Covered: North America, Europe, Japan (specifications may vary by market) Page Count Estimated Pages: 1000+ Manual Type Type: Factory Service Manual / Repair Manual Language Language: English Format Format: Downloadable PDF 📖 Manual Coverage Systems Covered Engine: EJ257 (2.5L Turbocharged Boxer, DCCD variations) Powertrain: Manual Transmission (6-speed), Clutch, Drivetrain (Symmetrical AWD, DCCD, Helical LSD, Driver Controlled Center Differential) Suspension: Front MacPherson struts, Rear Multi-link independent, STI-specific tuning, Dampers, Springs, Bushings Brakes: Front Brembo 4-piston calipers, Rear Brembo 2-piston calipers, ABS, Brake Booster, Master Cylinder Electrical: Wiring Diagrams, ECU, Sensors, Ignition System, Charging System, Lighting, Audio, Power Accessories Body: Body Panels, Doors, Hood, Trunk, Bumpers, Chassis, Interior Trim, Glass HVAC: Air Conditioning System, Heater Core, Blower Motor, Controls Steering: Power Steering System, Steering Column, Steering Rack Procedures Included Routine Maintenance: Oil changes, Filter replacements, Fluid checks, Spark plug replacement, Belt inspections Troubleshooting: Diagnostic procedures, DTC code explanations, Symptom-based troubleshooting Engine Repair: Engine assembly/disassembly, Piston/ring installation, Valve jobs, Turbocharger overhaul, Fuel injector service Transmission Repair: Transmission disassembly/reassembly, Gear replacement, Clutch replacement, DCCD unit service Electrical Diagnostics: Component testing, Sensor calibration, Wiring harness repair Suspension And Steering Repair: Component replacement (shocks, struts, bushings, tie rods), Wheel alignment procedures Brake System Repair: Pad and rotor replacement, Caliper service, Bleeding procedures Technical Depth Depth: Comprehensive: From basic fluid services to complete engine and transmission rebuilds, including advanced diagnostics and wiring schematics. 📊 Manual Specifications File Format File Type: PDF Searchable Text: Yes (typically, dependent on original scan quality) Print Quality Resolution: High-resolution scans, suitable for printing Readability: Clear text, legible diagrams, and illustrations Binding Type Binding Type: N/A (Digital Download - PDF) Paper Type Paper Type: N/A (Digital Download - PDF) ⚙️ Engine Specifications Primary Engine Engine Code: EJ257 Engine Type: 2.5L DOHC turbocharged flat-four (boxer) Performance Horsepower: 300 hp @ 6000 rpm (JDM/Euro spec), 280 hp @ 5600 rpm (USDM spec) Torque: 350 lb-ft @ 4000 rpm (JDM/Euro spec), 310 lb-ft @ 3600 rpm (USDM spec) Bore X Stroke: 99.5 mm x 79.0 mm Compression Ratio: 8.0:1 Fuel System Fuel Injection: Sequential multi-port fuel injection (MPI) Fuel Type: Unleaded gasoline (91 octane or higher recommended/required for optimal performance) Engine Management ECU Type: Engine Control Unit (ECU) with specific STI tuning 🔧 Transmission Standard Transmission Type: 6-speed manual transmission Optional Optional Transmission: None available for STI models Features Dccd System: Driver Controlled Center Differential (DCCD) with manual and auto modes. Differential Types: Front Helical Limited-Slip Differential (LSD), Rear Helical Limited-Slip Differential (LSD) 📐 Dimensions Exterior Length: 4,405 mm (173.4 in) Width: 1,795 mm (70.7 in) Height: 1,440 mm (56.7 in) (Sedan) Wheelbase: 2,620 mm (103.1 in) Front Track: 1,530 mm (60.2 in) Rear Track: 1,530 mm (60.2 in) Weights Curb Weight: Approx. 1,450 kg (3,197 lbs) Gross Vehicle Weight Rating: Approx. 1,830 kg (4,034 lbs) 🛡️ Safety Features Ratings NHTSA Front Crash Rating: 4 Stars (Driver and Passenger) NHTSA Side Impact Rating: 5 Stars (Front and Rear Passengers) Active Features ABS: Standard Anti-lock Braking System Traction Control: Yes (integrated with AWD and DCCD) Electronic Brake Force Distribution: Yes Passive Features Airbags: Front dual-stage airbags, Front side airbags Seatbelts: Pretensioner seatbelts with force limiters Body Structure: Reinforced chassis with impact-absorbing crumple zones 💡 Technology Features Infotainment Audio System: Factory CD player with AM/FM radio, often with premium speaker options. Display: Basic digital display for climate control and clock. Driver Assistance Cruise Control: Standard electronic cruise control. Connectivity Auxiliary Input: May be present as an aftermarket addition or specific market feature, not a standard factory feature on all units. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 miles or 3-6 months (severe use recommended). Spark Plug Replacement: Approx. 30,000 miles (Iridium type) Timing Belt Replacement: Not applicable (uses a timing chain) Coolant Flush Interval: Every 2 years or 30,000 miles Fluid Specifications Engine Oil Type: SAE 5W-30 Synthetic (API SJ or higher, ILSAC GF-3 or higher) Engine Oil Capacity: 4.5 US quarts (4.3 Liters) with filter change Transmission Fluid Type: Subaru Extra-S (or equivalent GL-5, SAE 75W-90 manual transmission fluid) Front Differential Fluid Type: Subaru Extra-S (or equivalent GL-5, SAE 75W-90 gear oil) Rear Differential Fluid Type: Subaru Extra-S (or equivalent GL-5, SAE 75W-90 gear oil) Coolant Type: Subaru Super...