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The Eclipse GST Stage 3 build is a popular choice among automotive enthusiasts looking to enhance the performance of their vehicles. This build focuses on achieving 375 horsepower through a combination of upgraded pistons, a turbocharger, and ECU tuning. In this article, we will explore the key components and steps involved in this exciting build.
Understanding the Eclipse GST
The Mitsubishi Eclipse GST is a sport compact car that has gained a loyal following due to its turbocharged engine and tunability. The 2.0L inline-four engine, known for its potential, serves as a solid foundation for performance upgrades. The Stage 3 build takes this platform to the next level, pushing the boundaries of power and efficiency.
Key Components of the Stage 3 Build
Upgraded Pistons
One of the first steps in achieving higher horsepower is upgrading the pistons. Stock pistons may not withstand the increased pressure and heat generated by a performance turbocharger. Upgraded pistons are designed to handle higher boost levels and provide improved durability.
- Forged pistons for increased strength
- Lower compression ratio for better boost handling
- Improved thermal resistance
Turbocharger Upgrade
The turbocharger is a crucial component in the Stage 3 build. A larger, more efficient turbo can significantly increase airflow and boost pressure, resulting in higher power output. Choosing the right turbo is essential for achieving the desired horsepower while maintaining reliability.
- Selecting a turbo with a suitable size for 375 HP
- Considering a ball bearing turbo for faster spool
- Ensuring compatibility with existing exhaust and intake systems
ECU Tuning
After upgrading the pistons and turbocharger, proper ECU tuning is necessary to maximize performance. The ECU (Engine Control Unit) controls the engine’s fuel and ignition timing, and tuning it allows for optimal performance with the new components. A professional tuner can adjust parameters to ensure the engine runs efficiently and reliably at higher horsepower levels.
- Using a standalone ECU or reflashing the stock ECU
- Tuning for air-fuel ratios and ignition timing
- Testing on a dynamometer for precise adjustments
Supporting Modifications
To support the increased power levels from the Stage 3 build, several additional modifications may be necessary. These supporting mods ensure that the vehicle can handle the added stress and provide a reliable driving experience.
Upgraded Fuel System
An upgraded fuel system is essential for delivering the increased fuel flow required by the higher horsepower output. This may include larger fuel injectors, a high-flow fuel pump, and upgraded fuel lines.
- Larger fuel injectors to match the increased airflow
- High-flow fuel pump for adequate fuel delivery
- Fuel pressure regulator adjustments
Exhaust System Upgrade
A performance exhaust system helps reduce back pressure and improve exhaust flow, which is crucial for turbocharged engines. Upgrading the exhaust system can enhance turbo performance and sound.
- High-flow catalytic converter
- Stainless steel exhaust piping for durability
- Performance muffler for improved sound
Cooling System Enhancements
With increased power comes increased heat. Upgrading the cooling system is vital to prevent overheating and maintain optimal engine performance. This may involve installing a larger intercooler and upgrading the radiator.
- Larger front-mount intercooler for better charge cooling
- Upgraded radiator for improved heat dissipation
- High-performance cooling fans
Final Considerations
Achieving 375 horsepower with an Eclipse GST Stage 3 build is an exciting project that requires careful planning and execution. Each component plays a vital role in reaching the desired power levels while maintaining reliability. It’s essential to work with experienced professionals and tuners to ensure that all modifications are compatible and properly installed.
With the right upgrades, the Eclipse GST can transform into a high-performance machine that delivers thrilling driving experiences. Whether on the track or the street, this build showcases the potential of the Mitsubishi Eclipse platform.