🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX STI Year: 2007 Codes Chassis Code: GDB Engine Code: EJ257 👋 Introduction Market Position Segment: Performance Compact Sedan/Wagon Usp: Iconic rally-bred performance, Symmetrical All-Wheel Drive, turbocharged boxer engine, driver-focused cockpit. Competitive Analysis Key Competitors: Mitsubishi Lancer Evolution, Subaru WRX (standard models), Mitsubishi Eclipse GT, Mazda Mazdaspeed3. Key Features Drivetrain: Subaru's Symmetrical All-Wheel Drive (AWD) system with Driver Controlled Center Differential (DCCD). Engine Technology: Horizontally opposed (boxer) turbocharged engine for a lower center of gravity and improved handling. Suspension: Performance-tuned independent suspension, front inverted struts, rear multi-link. Brakes: Performance braking system, often with Brembo calipers (front). 📋 Manual Details Coverage Areas Coverage Scope: Complete factory workshop service repair manual Page Count Estimated Pages: 800+ Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: Downloadable Digital Format (PDF) 📖 Manual Coverage Systems Covered Powertrain: Engine, fuel system, exhaust, cooling, lubrication, ignition, engine management, manual transmission, automatic transmission (if applicable), drivetrain, differentials, axles, driveshafts Chassis: Suspension (front and rear), steering, brakes (hydraulic and parking), wheels, tires, chassis frame, body structure Electrical: Charging system, starting system, lighting, ignition, instrumentation, audio system, power accessories, body control module (BCM), engine control unit (ECU), body wiring diagrams, chassis wiring diagrams Body: Exterior body panels, interior trim, seating, doors, windows, sunroof, bumpers, hood, trunk, HVAC system, climate control Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection and replacement Troubleshooting: Diagnostic procedures, fault code interpretation, symptom-based troubleshooting, wiring diagrams for diagnostics Repair: Engine overhaul, transmission repair/rebuild, brake caliper overhaul, suspension component replacement, electrical component repair/replacement, body panel repair/replacement Installation: Component installation, accessory fitting, timing belt replacement procedures Technical Depth Depth: Comprehensive: From basic maintenance and fluid changes to complete engine and transmission rebuilds, advanced diagnostics, and detailed electrical troubleshooting. 📊 Manual Specifications File Format Compatibility: Compatible with all PDF readers on PC, Mac, tablets, and smartphones. Print Quality Resolution: High-resolution, sharp text and clear diagrams suitable for printing. Binding Type Binding Method: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: 2.5L Turbocharged DOHC 16-Valve Flat-4 (EJ257) Performance Horsepower: 305 hp @ 6000 rpm (approx.) Torque: 290 lb-ft @ 3500 rpm (approx.) Fuel System Injection Type: Sequential multi-point fuel injection (MPI) Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) Engine Management ECU: Subaru Engine Control Unit (ECU) with advanced engine management capabilities. 🔧 Transmission Standard Transmission Type: 6-Speed Manual Transmission Optional Transmission Type: N/A for STI model Features Clutch Type: Hydraulic clutch AWD System: Symmetrical All-Wheel Drive with Driver Controlled Center Differential (DCCD) 📐 Dimensions Exterior Length: 4405 mm (173.4 in) Width: 1795 mm (70.7 in) Height: 1440 mm (56.7 in) Wheelbase: 2625 mm (103.3 in) Weights Curb Weight: Approx. 1500 kg (3300 lbs) Gross Vehicle Weight Rating: N/A (typically found in vehicle specific documentation) Cargo Trunk Volume: Approx. 12.6 cu ft (Sedan) 🛡️ Safety Features Ratings NHTSA Front Impact: 5-star NHTSA Side Impact: 5-star IIHS Frontal Offset: Good Active Features ABS: Anti-lock Braking System (ABS) with EBD (Electronic Brake-force Distribution) Traction Control: Vehicle Dynamics Control (VDC) - often includes traction and stability control Passive Features Airbags: Front airbags, front side-impact airbags, side curtain airbags (may vary by market/trim) Seatbelts: 3-point height-adjustable front seatbelts with pretensioners and load limiters, rear 3-point seatbelts Structure: Reinforced body structure with front and rear crumple zones. 💡 Technology Features Infotainment Audio System: Standard AM/FM/CD audio system with optional premium sound system. Speaker configurations vary by trim. Navigation: Optional factory navigation system available on select trims. Driver Assistance Cruise Control: Standard cruise control functionality. Dccd: Driver Controlled Center Differential (DCCD) for adjustable torque split, allowing drivers to fine-tune handling characteristics. Connectivity Auxiliary Input: Standard auxiliary audio input jack for external media players. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,750 miles or 6 months (severe driving) / 7,500 miles or 12 months (normal driving), consult manual for specifics. Timing Belt Interval: 105,000 miles or 105 months (critical item, check manual for exact procedure). Fluid Specifications Engine Oil: SAE 5W-30 Synthetic (meeting API SN or equivalent). Consult manual for exact Subaru specs. Transmission Fluid: Subaru Extra-S Manual Transmission Fluid (or equivalent API GL-5, SAE 75W-90). Differential Fluid: Subaru Extra-S Differential Fluid (or equivalent API GL-5, SAE 75W-90). Coolant: Subaru Super Coolant (Blue) or equivalent OAT coolant. Known Issues Engine Knock: Potential for detonation or ringland failure due to high boost and inadequate octane, especially with modifications. Manual addresses diagnostic steps. Clutch Wear: High-performance clutch can wear faster under aggressive driving. Manual covers clutch inspection and replacement. Turbocharger Issues: While generally robust, proper maintenance (oil changes, cool-down periods) is crucial. Manual details turbocharger service. Differential Noise: Occasional reports of rear differential noise; manual covers inspection and fluid checks. 📚 Vehicle History Brand Heritage...