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The Eclipse GST is a popular choice among car enthusiasts looking to upgrade their vehicles for enhanced performance. One of the key areas to focus on when aiming for significant horsepower gains, such as 400+ hp, is the fuel system. Upgrading the injectors and fuel pump is essential for ensuring the engine receives the correct amount of fuel to match the increased air flow from modifications like turbo upgrades and exhaust systems.
Understanding the Fuel System
The fuel system in the Eclipse GST consists of several components that work together to deliver fuel to the engine. These components include the fuel tank, fuel pump, fuel filter, fuel lines, and fuel injectors. Each part plays a crucial role in maintaining the efficiency and performance of the engine.
Key Components of the Fuel System
- Fuel Pump: Responsible for delivering fuel from the tank to the engine.
- Fuel Injectors: Spray fuel into the intake manifold for combustion.
- Fuel Filter: Removes impurities from the fuel before it reaches the injectors.
- Fuel Lines: Transport fuel between the tank, pump, filter, and injectors.
Why Upgrade Your Fuel System?
Upgrading the fuel system is crucial for several reasons. As you increase horsepower, the engine requires more fuel to maintain the correct air-fuel ratio. Stock components may not be capable of delivering the necessary fuel volume or pressure, leading to lean conditions and potential engine damage.
Benefits of Upgrading
- Improved fuel delivery for higher horsepower.
- Enhanced throttle response and engine performance.
- Reduced risk of engine knock and damage.
- Better overall reliability of the fuel system.
Choosing the Right Upgrades
When selecting upgrades for the fuel system, it is vital to choose components that are compatible with your vehicle and performance goals. Here are some recommended upgrades for achieving 400+ hp safely:
Upgrading the Fuel Pump
The fuel pump is one of the most critical components to upgrade. A higher flow fuel pump ensures that the engine receives enough fuel under high load conditions. Look for pumps that can deliver at least 255 liters per hour (LPH) at 40 psi for optimal performance.
Replacing Fuel Injectors
Fuel injectors should also be upgraded to accommodate the increased fuel flow needed for higher horsepower. Consider injectors with a flow rate of at least 550cc/min, which is suitable for most 400+ hp setups. Ensure that the injectors are properly matched to your engine’s tuning for optimal performance.
Installation Process
Installing a new fuel pump and injectors requires careful attention to detail. Here is a general overview of the installation process:
- Disconnect the battery to prevent any electrical issues.
- Remove the fuel tank or access the fuel pump from the top (depending on your model).
- Replace the stock fuel pump with the upgraded pump.
- Replace the fuel filter to ensure clean fuel delivery.
- Remove the old injectors and install the new ones, ensuring proper sealing.
- Reconnect all lines and the battery, then check for leaks.
Tuning After Upgrades
After upgrading the fuel system, it is essential to tune the engine to take full advantage of the new components. This involves adjusting the engine’s air-fuel ratio and ignition timing to ensure optimal performance and reliability. A professional tune is recommended to avoid any potential issues.
Benefits of Professional Tuning
- Ensures safe and efficient engine operation.
- Maximizes horsepower and torque output.
- Improves fuel economy.
- Reduces the risk of engine damage due to improper settings.
Conclusion
Upgrading the fuel system in your Eclipse GST is a vital step in achieving 400+ hp safely. By replacing the fuel pump and injectors, you can ensure that your engine receives the necessary fuel for optimal performance. Coupled with proper tuning, these upgrades can lead to significant improvements in horsepower, throttle response, and overall engine reliability.