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The Mitsubishi Eclipse has long been a favorite among car enthusiasts, particularly the 2G model, which was produced from 1995 to 1999. Known for its lightweight build and tunable engine, the 2G Eclipse provides a solid foundation for performance upgrades. In this article, we will explore how a 2G Eclipse equipped with a 16G turbocharger achieved an impressive 250 horsepower on the dyno.
Understanding the 2G Eclipse
The 2G Eclipse features a 2.0-liter inline-four engine, known as the 4G63. This engine is renowned for its robustness and potential for tuning. It comes in two main versions: the naturally aspirated version and the turbocharged version. The turbocharged variant, which is the focus of our discussion, lays the groundwork for significant power increases with the right modifications.
The 16G Turbocharger
The 16G turbocharger is a popular upgrade for the 4G63 engine. It strikes a balance between spool time and power output, making it an ideal choice for those looking to enhance performance without sacrificing too much drivability. The 16G turbo typically offers a boost range of 15 to 20 psi, depending on the supporting modifications and fuel used.
Benefits of the 16G Turbo
- Improved power output
- Faster spool time compared to larger turbos
- Better throttle response
Supporting Modifications
To achieve 250 horsepower on the dyno, several supporting modifications were necessary. These upgrades ensure that the engine can handle the increased boost and airflow provided by the 16G turbo. Below are some key modifications that contributed to this power output.
- Upgraded Fuel System: A high-flow fuel pump and larger fuel injectors are essential to supply the engine with enough fuel at higher boost levels.
- Aftermarket Intercooler: An upgraded intercooler helps to reduce intake temperatures, allowing for denser air and more efficient combustion.
- Performance Exhaust System: A less restrictive exhaust system improves airflow, reducing back pressure and allowing the engine to breathe better.
- Tuning: Proper tuning via an aftermarket engine management system is crucial to optimize fuel and timing for the new setup.
Dyno Testing Results
After completing the necessary modifications, the 2G Eclipse was taken to the dyno for testing. The results were impressive, showcasing the effectiveness of the turbo upgrade and supporting modifications. The car achieved a peak power output of 250 horsepower at approximately 6,500 RPM, with a torque figure of around 240 lb-ft.
Power Band Analysis
The power band of the modified 2G Eclipse with the 16G turbo is particularly noteworthy. The turbo spools quickly, providing usable power from low RPMs, which enhances the driving experience. The following characteristics were observed during the dyno runs:
- Strong low-end torque, making the car responsive in everyday driving conditions.
- Linear power delivery, allowing for smooth acceleration without sudden spikes.
- Peak horsepower achieved at high RPMs, making it suitable for spirited driving and track use.
Conclusion
The combination of a 16G turbocharger and supporting modifications has proven to be a successful formula for achieving 250 horsepower on the dyno with a 2G Eclipse. This setup not only enhances performance but also maintains the drivability that many enthusiasts desire. For those looking to upgrade their 2G Eclipse, this build serves as an excellent example of what can be achieved with the right components and tuning.
Further Considerations
While achieving 250 horsepower is an exciting milestone, it’s essential to consider the longevity and reliability of the vehicle. Regular maintenance and monitoring of engine parameters are crucial to ensure the engine remains healthy under increased stress. Additionally, enthusiasts should always be mindful of local emissions regulations and ensure that any modifications comply with legal standards.
Join the Community
The Mitsubishi Eclipse community is vibrant and full of knowledge. Joining forums, attending meetups, and participating in events can provide valuable insights and support for those looking to modify their vehicles. Sharing experiences, tips, and tricks can help others achieve their performance goals and foster a sense of camaraderie among enthusiasts.