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The 4G63 engine, a turbocharged inline-four, is renowned for its performance in the Mitsubishi Eclipse. This article explores the differences between stock and upgraded 4G63 engines, focusing on power gains that can elevate performance from 300 to over 500 horsepower.
Understanding the 4G63 Engine
The 4G63 engine has a rich history in the automotive world, particularly in the Mitsubishi Eclipse and other models. Known for its robust design and turbocharging capabilities, it has become a favorite among tuning enthusiasts.
Stock Specifications
The stock 4G63 engine typically produces around 190 to 200 horsepower. Its specifications include:
- 2.0-liter inline-four configuration
- Turbocharged with a stock turbocharger
- Intercooled system for improved performance
- Stock fuel injectors and fuel pump
Limitations of Stock Performance
While the stock 4G63 offers respectable power, several limitations hinder its performance potential:
- Restrictive exhaust system
- Limited boost pressure
- Stock tuning parameters
- Inadequate fuel delivery for high power outputs
Upgrading the 4G63 Engine
Upgrading the 4G63 can yield significant horsepower gains. Common modifications include:
- Aftermarket turbochargers
- Upgraded fuel injectors and pump
- Performance exhaust systems
- ECU remapping and tuning
Power Gains from Upgrades
With the right upgrades, the 4G63 engine can achieve power outputs exceeding 500 horsepower. Key modifications that contribute to these gains include:
- High-flow turbochargers can increase boost pressure significantly.
- Upgraded intercoolers improve air intake temperature, enhancing performance.
- Performance camshafts optimize the engine’s breathing capabilities.
- Enhanced engine management systems allow for precise tuning.
Comparison of Power Outputs
Below is a comparison of power outputs for stock versus upgraded 4G63 engines:
- Stock 4G63: 190-200 HP
- Stage 1 Upgrades: 300-350 HP
- Stage 2 Upgrades: 400-450 HP
- Stage 3 Upgrades: 500+ HP
Factors Influencing Power Gains
Several factors can influence the extent of power gains in upgraded 4G63 engines:
- Quality of parts used in upgrades
- Expertise of the tuner
- Supporting modifications (e.g., drivetrain upgrades)
- Fuel quality and type
Conclusion
The 4G63 engine is capable of impressive power gains when upgraded properly. With modifications, enthusiasts can transform their stock engines to produce over 500 horsepower, making it a popular choice for performance tuning.
Whether you’re a teacher, student, or automotive enthusiast, understanding the potential of the 4G63 can enhance your appreciation for this iconic engine.