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The Mitsubishi Eclipse GST is a popular choice among car enthusiasts, especially those looking to modify their vehicles for improved performance. One of the most sought-after modifications is enhancing the fuel system to achieve significant horsepower gains. In this article, we will explore how to achieve 350 wheel horsepower (WHP) on pump gas with a modded fuel system.
Understanding the Basics of the Eclipse GST
The Eclipse GST is equipped with a turbocharged 2.0-liter inline-four engine, known as the 4G63. This engine is renowned for its potential to handle modifications well, making it a favorite in the tuning community. To achieve higher horsepower, a proper understanding of the fuel system is essential.
Key Modifications for Achieving 350 WHP
To reach the target of 350 WHP on pump gas, several modifications to the fuel system are necessary. Below are the key components that need to be upgraded:
- High-Performance Fuel Pump
- Upgraded Fuel Injectors
- Aftermarket Fuel Pressure Regulator
- Fuel Rail Upgrade
- Quality Fuel Lines
High-Performance Fuel Pump
Upgrading to a high-performance fuel pump is crucial for maintaining adequate fuel flow at higher power levels. A pump capable of delivering enough fuel at the required pressure will ensure that the engine receives the necessary fuel for combustion.
Upgraded Fuel Injectors
To support increased horsepower, larger fuel injectors are essential. These injectors must be capable of delivering more fuel to match the engine’s air intake, especially under boost conditions. Consider injectors with a flow rate that suits your horsepower goals.
Aftermarket Fuel Pressure Regulator
An aftermarket fuel pressure regulator allows for precise control over fuel pressure. This is vital when tuning the engine for optimal performance. The regulator should be adjustable to accommodate different boost levels and fuel requirements.
Fuel Rail Upgrade
Upgrading the fuel rail ensures that all injectors receive an equal and adequate supply of fuel. A larger diameter rail can help reduce restrictions and improve fuel delivery, especially at higher RPMs.
Quality Fuel Lines
Using high-quality fuel lines is essential for ensuring that fuel flows efficiently from the tank to the engine. Consider using fuel lines that can withstand higher pressures and are resistant to heat and wear.
Tuning for 350 WHP
Once the fuel system modifications are complete, tuning the engine is the next critical step. Proper tuning ensures that the air-fuel mixture is optimized for maximum performance.
Choosing the Right Tuner
Selecting a skilled tuner familiar with the Eclipse GST and its modifications is essential. A professional tuner can help you achieve the desired horsepower while ensuring the engine runs smoothly and reliably.
Using a Dyno for Accurate Measurements
Utilizing a dynamometer (dyno) during tuning allows for precise measurements of horsepower and torque. This information is invaluable for making adjustments to the fuel map and ignition timing to maximize performance.
Testing and Validation
After tuning, it’s crucial to validate the performance gains through testing. This involves taking the vehicle to a track or a controlled environment to assess its performance under various conditions.
Monitoring Engine Parameters
During testing, monitoring key engine parameters such as air-fuel ratio, boost levels, and engine temperatures is vital. This data helps ensure that the engine operates within safe limits while achieving the desired power output.
Making Adjustments as Necessary
Based on testing results, you may need to make further adjustments to the fuel system or tuning parameters. Continuous monitoring and tweaking will help maintain optimal performance and reliability.
Conclusion
Achieving 350 WHP on pump gas with a modded fuel system in an Eclipse GST is an attainable goal for enthusiasts willing to invest in quality parts and tuning. By following the outlined modifications and ensuring proper tuning, you can enjoy a high-performance driving experience while maintaining reliability.