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The Mitsubishi Eclipse GSX is a beloved platform for enthusiasts looking to extract impressive horsepower without emptying their wallets. If you’re aiming for 400+ horsepower, upgrading the fuel system is crucial. This article will explore various fuel system modifications that can help you achieve your power goals efficiently.
Understanding the Fuel Requirements
Before diving into specific modifications, it’s essential to understand the fuel requirements for high horsepower applications. As you increase horsepower, the engine demands more fuel to maintain optimal performance. Here are some key factors to consider:
- Fuel flow rate
- Fuel pressure
- Injector size
- Fuel quality
Key Fuel System Mods for 400+ HP
To support 400+ horsepower in your Eclipse GSX, consider the following modifications:
- Upgraded Fuel Pump
- High-Flow Fuel Injectors
- Fuel Pressure Regulator
- Upgraded Fuel Lines
- Fuel Rail Upgrade
Upgraded Fuel Pump
The stock fuel pump may not deliver the necessary flow rate for high horsepower applications. Upgrading to a high-performance fuel pump ensures your engine receives adequate fuel under boost. Look for pumps rated for at least 255 liters per hour (LPH) to support your power goals.
High-Flow Fuel Injectors
To achieve 400+ horsepower, you’ll need larger fuel injectors. Stock injectors typically max out around 450cc/min. Upgrading to injectors in the range of 650-850cc/min will provide the extra fuel needed for your setup. Choose quality brands known for reliability.
Fuel Pressure Regulator
A fuel pressure regulator (FPR) helps maintain consistent fuel pressure across all RPMs. An adjustable FPR allows you to fine-tune fuel pressure based on your modifications. Aim for a baseline pressure of around 43 psi for optimal performance.
Upgraded Fuel Lines
Stock fuel lines may restrict fuel flow at higher power levels. Upgrading to larger diameter fuel lines can significantly improve fuel delivery. Consider using -6AN or -8AN lines for better performance and reliability.
Fuel Rail Upgrade
An upgraded fuel rail can improve fuel distribution to the injectors. Look for rails designed to handle higher flow rates and pressure. Some aftermarket options also feature provisions for additional injectors, which can be beneficial for future upgrades.
Additional Considerations
Beyond the primary fuel system modifications, consider these additional factors to ensure your setup is robust:
- Fuel Quality
- Tuning
- Cooling System
- Engine Management
Fuel Quality
Always use high-quality fuel to prevent knock and ensure optimal performance. Higher octane fuels can help your engine run more efficiently, especially under boost.
Tuning
After making fuel system upgrades, proper tuning is essential. A professional tune will ensure your engine runs smoothly and efficiently, maximizing performance while minimizing the risk of damage.
Cooling System
Increased horsepower can lead to higher engine temperatures. Upgrading your cooling system, including the radiator and intercooler, can help maintain optimal operating temperatures and improve performance.
Engine Management
Investing in a quality engine management system can provide better control over fuel delivery and ignition timing. This is particularly important for maximizing the potential of your upgraded fuel system.
Conclusion
Upgrading the fuel system in your Mitsubishi Eclipse GSX is a vital step to support 400+ horsepower without breaking the bank. By focusing on essential components like the fuel pump, injectors, and pressure regulator, you can achieve your performance goals while maintaining reliability. Remember to consider additional factors like fuel quality, tuning, and cooling to ensure a well-rounded setup.