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The 4G63 engine, known for its robust performance and tunability, has become a favorite among automotive enthusiasts, especially in the Mitsubishi Eclipse and Eagle Talon communities. Upgrading the turbocharger on a 4G63 can significantly enhance performance for both street and track applications. However, it’s essential to balance power gains with cost and longevity. This article explores the best practices for upgrading your 4G63 turbo, ensuring you achieve your performance goals without compromising reliability.
Understanding the 4G63 Turbocharger
The 4G63 engine is a 2.0-liter inline-four engine that has been used in various Mitsubishi models. It features a DOHC design and is known for its ability to handle significant power increases with the right modifications. The factory turbocharger, while capable, often limits the potential of the engine. Upgrading the turbocharger can provide a substantial boost in horsepower and torque, but it’s essential to choose the right turbo for your specific needs.
Types of Turbochargers for the 4G63
- OEM Replacement Turbos: These are direct replacements for the factory turbo, providing a slight increase in performance without requiring extensive modifications.
- Big Turbo Upgrades: Larger turbos can significantly increase power but may require additional modifications, such as upgraded fuel systems and intercoolers.
- Ball Bearing Turbos: These offer faster spool times and improved efficiency, making them a popular choice for both street and track use.
Balancing Power and Cost
When considering a turbo upgrade, it’s crucial to evaluate the cost versus the power gains. While it may be tempting to go for the largest turbo available, this approach can lead to increased costs in supporting modifications and potential reliability issues.
Budget-Friendly Options
- Consider upgrading to a larger aftermarket turbo that fits within your budget while still providing a noticeable performance increase.
- Look for used turbos in good condition to save on costs.
- Focus on essential supporting mods first, such as a high-flow fuel pump and upgraded injectors, before investing in a turbo.
Supporting Modifications
A turbo upgrade alone is not enough to maximize performance. Supporting modifications are essential to ensure the engine runs smoothly and reliably. These modifications can include upgrades to the fuel system, intercooler, exhaust, and engine management.
Essential Supporting Mods
- Upgraded Fuel Injectors: To handle increased fuel demands from a larger turbo.
- High-Performance Fuel Pump: Ensures adequate fuel supply under high boost conditions.
- Intercooler Upgrade: Reduces intake temperatures, improving performance and reliability.
- Exhaust System: A free-flowing exhaust helps reduce back pressure and improves turbo response.
- Engine Management: A standalone or reflashed ECU can optimize fuel maps for the new turbo setup.
Longevity Considerations
While upgrading your turbo can yield impressive performance gains, it’s vital to consider the longevity of your engine. Higher power outputs can lead to increased wear and tear, so taking steps to maintain engine health is crucial.
Tips for Longevity
- Regular Maintenance: Keep up with oil changes and other routine maintenance to ensure engine health.
- Heat Management: Install heat shields and ensure proper cooling to prevent overheating.
- Monitor Boost Levels: Keep boost within safe limits to avoid engine damage.
- Use Quality Parts: Invest in reputable brands for turbo and supporting components to ensure reliability.
Conclusion
Upgrading the turbo on a 4G63 engine can unlock significant performance potential for both street and track applications. By carefully choosing the right turbo and considering supporting modifications, you can achieve a balance of power, cost, and longevity. Always remember to prioritize engine health and maintenance to enjoy the benefits of your upgrade for years to come.