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The Subaru WRX is a popular choice among car enthusiasts, particularly those looking to modify their vehicles for increased performance. One of the most effective ways to achieve significant horsepower gains is through an E85 conversion. This article will explore the high-flow fuel system components necessary for a WRX E85 conversion, helping you achieve consistent 450+ horsepower.
Understanding E85 Fuel
E85 is a fuel blend that consists of 85% ethanol and 15% gasoline. It offers several advantages over traditional gasoline, including a higher octane rating and the ability to provide more power. However, to take full advantage of E85, specific modifications to the fuel system are necessary.
Key Components of a High-Flow Fuel System
When converting a WRX to run on E85, several key components must be upgraded to ensure that the fuel system can handle the increased flow and pressure requirements. Below is a list of essential components:
- High-Flow Fuel Pump
- Upgraded Fuel Injectors
- Fuel Pressure Regulator
- Upgraded Fuel Lines
- Fuel Filter
High-Flow Fuel Pump
The fuel pump is the heart of your fuel system. For E85, you need a high-flow fuel pump that can deliver the necessary fuel volume and pressure. Look for pumps that are rated for at least 450 horsepower to ensure reliability.
Upgraded Fuel Injectors
Stock fuel injectors may not provide enough flow for E85. Upgrading to larger injectors ensures that your engine receives the correct amount of fuel. Aim for injectors with a flow rating that matches or exceeds your horsepower goals.
Fuel Pressure Regulator
A reliable fuel pressure regulator is crucial for maintaining consistent fuel pressure, especially with the increased demands of E85. Look for adjustable regulators that can handle the higher pressures associated with high-flow applications.
Upgraded Fuel Lines
The fuel lines in your WRX may not be suitable for the increased flow rates of E85. Upgrading to larger diameter fuel lines ensures that your system can deliver the necessary fuel without restrictions.
Fuel Filter
With the switch to E85, it’s important to use a fuel filter designed to handle the corrosive properties of ethanol. Ensure that your filter is compatible with E85 and can handle the increased flow rates.
Benefits of E85 Conversion
Converting your WRX to E85 offers several benefits, including:
- Higher horsepower potential
- Improved throttle response
- Lower engine temperatures
- Cost-effective fuel option
Considerations Before Conversion
Before diving into an E85 conversion, consider the following:
- Availability of E85 in your area
- Potential impact on fuel economy
- Compatibility with existing engine components
- Need for tuning after conversion
Tuning for E85
After upgrading your fuel system, a proper tune is essential to maximize performance and reliability. E85 requires different air-fuel ratios compared to gasoline, so working with a knowledgeable tuner is crucial.
Conclusion
Converting your WRX to E85 with high-flow fuel system components is an excellent way to achieve consistent 450+ horsepower. By upgrading your fuel pump, injectors, regulator, lines, and filter, you can unlock the full potential of your vehicle. Remember to consider the benefits and challenges of E85, and ensure you have a proper tune to get the most out of your modifications.