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The 4G63 engine, a staple in the Mitsubishi performance community, has been the foundation for many high-performance builds. With its roots in the Mitsubishi Eclipse and Talon, the 4G63 has proven to be a reliable and tunable engine. In this article, we will explore the differences between the stock and tuned versions of the 4G63, focusing on how enthusiasts can achieve 400-500 horsepower while maintaining reliability.
Understanding the 4G63 Engine
The 4G63 is a 2.0L inline-4 engine that features a DOHC design. Known for its robust construction and ability to handle significant power, it has been a favorite among tuners for decades. The engine’s design allows for easy modifications, making it ideal for those looking to boost performance.
Stock 4G63 Performance
In its stock form, the 4G63 produces around 190-200 horsepower, depending on the specific model and year. While this power output is respectable for a street car, many enthusiasts seek to push the limits. The stock setup includes:
- Factory turbocharger
- Stock fuel injectors
- OEM exhaust system
- Standard ECU tuning
While the stock 4G63 is reliable for daily driving, it lacks the power potential that many tuners desire. This leads to the question: how can one achieve 400-500 horsepower?
Tuning the 4G63 for Performance
Tuning a 4G63 to achieve 400-500 horsepower requires a combination of upgrades and proper tuning. Below are the essential modifications needed to reach this power level:
- Upgraded turbocharger
- Higher flow fuel injectors
- Performance exhaust system
- Aftermarket ECU or tuning software
- Upgraded intercooler
Upgraded Turbocharger
One of the most significant upgrades for increasing horsepower is the turbocharger. A larger turbo can provide more boost, leading to higher power outputs. Popular options for the 4G63 include:
- Garrett GT series
- FP Black turbo
- Holset HX35
Fuel System Upgrades
To support higher horsepower levels, the fuel system must be upgraded. This includes larger fuel injectors and a high-flow fuel pump. Recommended components include:
- 1000cc or larger fuel injectors
- Walbro 255 fuel pump
Exhaust System
A performance exhaust system is crucial for reducing backpressure and improving turbo response. Upgrading to a 3-inch exhaust system can significantly enhance performance. Key components to consider are:
- 3-inch downpipe
- High-flow catalytic converter
- Performance muffler
ECU Tuning
Proper tuning is essential to maximize the performance of the upgraded components. An aftermarket ECU or tuning software allows for fine-tuning of fuel maps and ignition timing. Popular options include:
- ECMTuning
- AEM Infinity
- Link ECU
Achieving Reliability at High Power Levels
While achieving 400-500 horsepower is exciting, maintaining reliability is equally important. Here are some tips to ensure your 4G63 remains dependable:
- Regular maintenance and oil changes
- Monitoring engine temperatures
- Using quality fuel and lubricants
- Investing in a robust cooling system
Conclusion
The 4G63 engine offers a fantastic platform for achieving high horsepower levels while remaining reliable. With the right modifications and tuning, reaching 400-500 horsepower is entirely possible. By focusing on quality parts and proper maintenance, enthusiasts can enjoy the thrill of a powerful 4G63 without compromising reliability.