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The G Eclipse has long been a favorite among car enthusiasts, especially for those looking to modify their vehicles for enhanced performance. One of the most exciting upgrades is the turbo conversion, which can significantly boost horsepower and overall driving experience. In this article, we will explore how to upgrade a stock G Eclipse from 140 horsepower to over 250 horsepower using a Garrett T25 turbocharger and essential support modifications.
Understanding the Stock G Eclipse
The stock G Eclipse, particularly the models from the late 1990s to early 2000s, is equipped with a naturally aspirated engine that produces around 140 horsepower. While this is sufficient for daily driving, many enthusiasts seek more power for racing or spirited driving. Understanding the stock setup is crucial for planning an effective turbo upgrade.
Choosing the Right Turbocharger: The Garrett T25
The Garrett T25 turbocharger is a popular choice for those looking to increase horsepower without excessive lag. It is compact, lightweight, and capable of producing significant boost pressure, making it ideal for the G Eclipse. Here are some key features of the T25:
- Compact design for easy installation
- Fast spool time for immediate power delivery
- Durable construction for reliability
Essential Support Mods for the Upgrade
To achieve over 250 horsepower with the Garrett T25, several supporting modifications are necessary. These upgrades ensure that the engine can handle the increased power and maintain reliability. Below are the essential support mods:
- Upgraded Fuel Injectors: Increased fuel flow is critical for higher horsepower. Consider 550cc or larger injectors.
- High-Performance Fuel Pump: A fuel pump capable of supplying adequate fuel pressure is essential.
- Aftermarket ECU Tuning: Proper tuning maximizes performance and ensures the engine runs efficiently.
- Intercooler Installation: An intercooler helps to reduce intake temperatures, improving performance and engine longevity.
- Exhaust System Upgrade: A high-flow exhaust system reduces back pressure and enhances turbo efficiency.
Installation Process
Installing a turbocharger is a complex process that requires mechanical knowledge and skills. Here’s a general overview of the installation steps:
- Remove the Stock Intake and Exhaust: Begin by removing the factory intake manifold and exhaust manifold.
- Install the Turbocharger: Mount the Garrett T25 to the exhaust manifold, ensuring all gaskets are in place to prevent leaks.
- Connect the Intake and Exhaust: Attach the intake piping to the turbo and connect the exhaust side to the exhaust system.
- Install the Intercooler: Position the intercooler in front of the radiator and connect the piping to the turbo and intake manifold.
- Upgrade Fuel System: Replace fuel injectors and install the high-performance fuel pump.
- Tune the ECU: Use a tuning device to adjust the engine parameters for optimal performance.
Testing and Tuning
Once the installation is complete, it’s crucial to test the vehicle and perform tuning adjustments. Start the engine and check for any leaks or issues. After ensuring everything is functioning correctly, take the car for a test drive. Monitor boost levels, air-fuel ratios, and overall performance. Fine-tuning may be necessary to achieve the desired horsepower and drivability.
Benefits of the Turbo Upgrade
The benefits of upgrading the G Eclipse with a Garrett T25 turbocharger are significant. Here are some advantages:
- Increased Horsepower: Achieving over 250 horsepower transforms the driving experience.
- Improved Acceleration: The turbocharger provides instant power, enhancing acceleration and responsiveness.
- Enhanced Driving Enjoyment: The increased performance makes driving more thrilling and enjoyable.
Considerations and Precautions
While the turbo upgrade offers numerous benefits, there are important considerations to keep in mind:
- Reliability: Ensure that all components are high quality to maintain engine reliability.
- Insurance: Check with your insurance provider about coverage for modified vehicles.
- Legal Compliance: Be aware of local emissions regulations and ensure compliance with modifications.
Conclusion
Upgrading a G Eclipse with a Garrett T25 turbocharger and support mods is an exciting project that can significantly enhance performance. With proper installation and tuning, it is possible to boost horsepower from 140 to over 250, providing a thrilling driving experience. As with any modification, careful planning and execution are essential to achieve the best results while maintaining reliability.