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The 4G63 engine has long been a favorite among performance enthusiasts, especially in the Mitsubishi Eclipse. Known for its robust design and tuning potential, this engine can be pushed to incredible power levels. In this article, we will explore how to max out a 4G63 Eclipse to achieve over 700 horsepower using Manley internals and DSM wiring.
Understanding the 4G63 Engine
The 4G63 is a 2.0-liter inline-four engine that has powered various Mitsubishi models. Its design features a DOHC layout and a turbocharger, making it a prime candidate for tuning. The engine’s strong iron block and aluminum head provide a solid foundation for high horsepower builds.
Key Components for a 700+ HP Build
- Manley forged pistons
- Manley H-beam connecting rods
- Upgraded turbocharger
- High-performance fuel injectors
- Aftermarket fuel pump
- Standalone engine management system
Manley Internals
Upgrading to Manley internals is crucial for achieving high horsepower. Manley forged pistons are designed to withstand the extreme pressures and temperatures associated with high-performance applications. Coupled with Manley H-beam connecting rods, these components provide the strength needed to handle over 700 horsepower.
Turbocharger Selection
Choosing the right turbocharger is essential for maximizing power. A larger turbo will provide more airflow, allowing the engine to produce higher horsepower. Popular choices among enthusiasts include the Garrett GTX series and the BorgWarner EFR series. Proper sizing and tuning are critical to ensure the turbo operates efficiently within the engine’s power band.
Wiring and Electronics
Upgrading the wiring and electronics is vital for managing the increased power. DSM wiring harnesses are commonly used due to their compatibility with the 4G63 engine. A standalone engine management system allows for precise tuning and control over fuel delivery and ignition timing, which is crucial for high horsepower builds.
Fuel System Upgrades
To support over 700 horsepower, the fuel system must be upgraded. High-performance fuel injectors and a larger fuel pump are necessary to ensure the engine receives enough fuel. Consider using 1000cc injectors or larger, along with a fuel pump capable of delivering sufficient pressure and volume.
Tuning for Maximum Performance
After all components are installed, proper tuning is essential to achieve and maintain 700+ horsepower. A professional tuner should be consulted to optimize the engine’s performance. This process involves adjusting fuel maps, ignition timing, and boost levels to ensure the engine runs safely and efficiently.
Dyno Testing
Once tuned, dyno testing is the best way to verify the engine’s performance. This allows for real-time adjustments and ensures that the engine is producing the desired horsepower. It also helps identify any potential issues that may arise under load.
Conclusion
Maxing out a 4G63 Eclipse to achieve over 700 horsepower is an ambitious but rewarding project. With the right components, including Manley internals and proper wiring, enthusiasts can unlock the full potential of this legendary engine. Proper tuning and testing will ensure that the build is not only powerful but also reliable for daily driving or track use.