Positioning:
A homologation special built for rally racing, offering exceptional performance and handling in a road-legal package. Known as a driver's car.
Competitors:
Subaru Impreza WRX STi, Ford Escort RS Cosworth, Lancia Delta Integrale Evoluzione
Performance Enhancements:
Aggressive styling, powerful turbocharged engine, advanced all-wheel-drive system with Active Yaw Control (AYC), upgraded suspension and brakes
Engine Mechanical:
Complete overhaul, component testing, timing belt replacement, turbocharger service, cooling system, lubrication system
Engine Management Electronic:
ECU diagnosis, sensor testing (MAP, TPS, IAT, Knock, O2), fuel injection system, ignition system, emissions control
Transmission Manual:
Clutch system, gearbox overhaul, gear shift mechanism, lubrication, flywheel replacement
Transmission AWD:
Active Yaw Control (AYC) system diagnosis and calibration, transfer case, center differential, rear differential
Drivetrain:
Driveshafts, CV joints, wheel hubs, axle components
Suspension:
Front and rear suspension components, shock absorbers, springs, control arms, anti-roll bars, strut tower braces
Steering:
Power steering system, steering rack, tie rods, steering column
Brakes:
Front and rear brake systems, ABS operation and diagnosis, brake fluid, caliper service, rotor replacement, brake lines
Electrical System:
Battery, charging system, starter, lighting, horn, wipers, power windows, mirrors, fuses, relays, wiring diagrams
Body And Chassis:
Body panel alignment, door mechanisms, interior trim, chassis components, rust prevention, body repair techniques
Climate Control:
HVAC system diagnosis, refrigerant, compressor, heater core, A/C system service
Scheduled Maintenance:
Oil changes, filter replacements, fluid checks and changes, spark plug replacement, brake inspections, tire rotation
Troubleshooting:
Diagnostic trouble codes (DTCs), symptom-based troubleshooting guides for all major systems
Repair Procedures:
Step-by-step instructions for engine, transmission, suspension, brake, electrical, and body component repair and replacement
Diagnostics:
Detailed diagnostic procedures for electronic control units (ECUs), sensors, actuators, and mechanical systems
Wiring Diagrams:
Comprehensive electrical wiring schematics for all vehicle systems
Depth:
Comprehensive: Covers basic maintenance to full engine and transmission rebuilds, including complex electronic diagnostics and AYC system calibration
Engine Type:
2.0L Inline-4 DOHC 16-valve Turbocharged (4G63T)
Horsepower:
280 PS (276 hp; 206 kW) at 6,500 rpm (JDM Spec)
Torque:
350 Nm (258 lb-ft) at 3,000 rpm (JDM Spec)
Fuel Delivery:
Electronic Fuel Injection (EFI) with multi-point injection
Turbocharger:
Mitsubishi TD05HR-16G twin-scroll turbocharger with intercooler
Coolant Type:
Ethylene Glycol based coolant (e.g., Mitsubishi DiaQueen Super Long Life Coolant, or equivalent)
Oil Type:
SAE 10W-30 or 10W-40 API SG or higher (e.g., Mitsubishi DiaQueen ECO-Action SAE 10W-30)
Oil Capacity:
Approx. 4.5 Liters (4.8 US Quarts) with filter
Ignition System:
Distributorless ignition system (DIS) with individual ignition coils
Type:
5-speed Manual Transmission (F5M51)
Type:
N/A (Manual transmission was standard for Evo IV)
Drivetrain:
All-Wheel Drive (AWD) with Active Yaw Control (AYC)
Ayc System:
Hydraulically controlled differential for torque vectoring to the rear wheels
Gearbox Oil Type:
API GL-4 or GL-5, SAE 75W-90 (e.g., Mitsubishi DiaQueen LSD Gear Oil 75W-90)
Transfer Case Oil Type:
API GL-4 or GL-5, SAE 75W-90 (e.g., Mitsubishi DiaQueen LSD Gear Oil 75W-90)
Ayc Oil Type:
Special AYC fluid, consult manual for specific type (often a high-viscosity hydraulic fluid)
NHTSA Rating:
N/A (Vehicle not designed to meet modern US safety standards)
Ancap Rating:
N/A (Vehicle not officially tested by ANCAP)
ABS:
Standard Anti-lock Braking System (ABS)
Ayc:
Active Yaw Control (AYC) for enhanced cornering stability
Airbags:
Driver's airbag standard (Passenger airbag optional or unavailable depending on market)
Seatbelts:
3-point front seatbelts with pre-tensioners, 3-point rear seatbelts
Chassis Reinforcement:
Reinforced chassis structure for increased rigidity and crash protection
Oil Change Interval:
Every 5,000 km (3,000 miles) or 6 months, whichever comes first, especially under strenuous driving conditions.
Air Filter Replacement:
Every 15,000 km (9,000 miles) or annually.
Spark Plug Replacement:
Every 30,000 km (18,000 miles).
Timing Belt Replacement:
Every 100,000 km (60,000 miles) or 5 years, whichever comes first.
Brake Fluid Change:
Every 2 years or 30,000 km (18,000 miles).
Coolant Flush:
Every 2 years or 40,000 km (24,000 miles).
Brake Fluid Type:
DOT 3 or DOT 4
Power Steering Fluid:
Dexron-II or equivalent automatic transmission fluid (ATF)
Engine Reliability:
Robust 4G63T engine, but prone to ring land failure if consistently overheated or run with poor fuel quality. Regular maintenance is critical.
Ayc System Reliability:
AYC pump and sensors can be prone to failure over time, leading to loss of functionality. Proper fluid changes and diagnostics are key.
Turbocharger:
The TD05HR turbo is robust but requires proper warm-up and cool-down procedures to prevent premature wear. Oil starvation can cause significant damage.
Clutch Wear:
Due to the performance nature of the car, clutches can wear faster than average, especially with spirited driving.
Suspension Bushings:
Rubber suspension bushings can degrade over time, affecting handling and ride quality.