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The 4G63 engine, found in the Mitsubishi Eclipse, is a popular choice among car enthusiasts looking to achieve high horsepower levels. When aiming for 600+ horsepower, upgrading the fuel system is essential. This article will explore the necessary fuel system modifications, including fuel rails, pumps, and injectors, to support your performance goals.
Understanding the Fuel System
The fuel system in any high-performance vehicle plays a crucial role in delivering the right amount of fuel to the engine. For the 4G63, the stock fuel system may not suffice when pushing for 600+ hp. Upgrading key components ensures that your engine receives adequate fuel under high-pressure conditions.
Fuel Rails
Fuel rails are critical components that distribute fuel to the injectors. Upgrading to a high-performance fuel rail can significantly improve fuel delivery and pressure consistency. Here are some options to consider:
- Aftermarket Fuel Rails: These are designed to handle higher fuel flow rates and pressures, making them suitable for high-performance applications.
- Material Quality: Look for fuel rails made from high-quality materials like aluminum or stainless steel to ensure durability and resistance to corrosion.
- Fitment: Ensure compatibility with your 4G63 engine and any additional modifications you have made.
Fuel Pumps
Fuel pumps are responsible for delivering fuel from the tank to the engine. Upgrading to a high-capacity fuel pump is essential for supporting higher horsepower levels. Consider the following:
- In-Tank vs. Inline Pumps: In-tank pumps are quieter and easier to install, while inline pumps can offer higher flow rates and are easier to replace.
- Flow Rate: Look for pumps that can deliver at least 255 LPH (liters per hour) for 600+ hp applications.
- Voltage Compatibility: Ensure the pump is compatible with your vehicle’s electrical system to avoid potential issues.
Fuel Injectors
Fuel injectors play a vital role in atomizing fuel for combustion. Upgrading to larger injectors is necessary to provide the additional fuel required for higher horsepower. Here are some key considerations:
- Injector Size: For 600+ hp, consider injectors with a flow rate of 750cc/min or higher.
- Type of Injectors: High impedance injectors are typically preferred for their compatibility with stock ECU systems.
- Brand Reputation: Choose reputable brands known for quality and reliability in high-performance applications.
Supporting Modifications
In addition to upgrading the fuel rails, pumps, and injectors, other modifications may be necessary to support your fuel system upgrades:
- Fuel Pressure Regulator: An adjustable fuel pressure regulator can help maintain optimal fuel pressure across different operating conditions.
- Fuel Lines: Upgrading to larger diameter fuel lines can reduce restrictions and improve flow rates.
- ECU Tuning: Proper tuning of the ECU is essential to ensure the engine runs efficiently with the new fuel system components.
Conclusion
Upgrading the fuel system is a crucial step for anyone looking to push their 4G63 Eclipse to 600+ horsepower. By investing in quality fuel rails, pumps, and injectors, along with supporting modifications, you can achieve your performance goals while ensuring engine reliability. Always consult with professionals or experienced tuners to tailor the upgrades to your specific setup.