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The Subaru WRX is known for its performance and tuning potential. For enthusiasts looking to boost horsepower without breaking the bank, an E85 conversion offers a cost-effective solution. In this article, we will explore how to achieve over 100 horsepower gains for under $2,000.
Understanding E85 Fuel
E85 is a fuel blend made up of 85% ethanol and 15% gasoline. It has a higher octane rating than regular gasoline, which allows for more aggressive tuning and greater power output. However, it is important to understand how it works and what is needed for a successful conversion.
Benefits of E85 Conversion
- Higher octane rating enables more aggressive tuning.
- Increased horsepower and torque.
- Cost-effective compared to traditional performance upgrades.
- Cleaner combustion and reduced emissions.
Essential Components for Conversion
To convert your WRX to E85, several components need to be upgraded or replaced. Here’s a list of essential parts required for a successful conversion:
- High-flow fuel pump
- Upgraded fuel injectors
- Flex-fuel sensor
- ECU tuning
- High-performance fuel lines
High-Flow Fuel Pump
A high-flow fuel pump is necessary to ensure that sufficient fuel is delivered to the engine. Ethanol requires more fuel volume than gasoline, making an upgrade essential for maintaining performance.
Upgraded Fuel Injectors
Standard fuel injectors may not provide enough fuel flow for E85. Upgraded injectors will help deliver the necessary amount of fuel to maximize power gains.
Flex-Fuel Sensor
A flex-fuel sensor allows your vehicle’s ECU to detect the ethanol content in the fuel. This ensures that the engine runs optimally regardless of the fuel blend being used.
ECU Tuning
Proper ECU tuning is critical for maximizing the benefits of E85. A professional tune will adjust fuel maps and ignition timing to take advantage of the increased octane and fuel volume.
High-Performance Fuel Lines
Upgrading to high-performance fuel lines is necessary to handle the corrosive nature of ethanol. This will prevent leaks and ensure a reliable fuel delivery system.
Cost Breakdown
To keep the total conversion cost under $2,000, here’s a breakdown of estimated costs for each component:
- High-flow fuel pump: $300
- Upgraded fuel injectors: $500
- Flex-fuel sensor: $150
- ECU tuning: $500
- High-performance fuel lines: $200
Total Estimated Cost: $1,700
Installation Tips
Installing the necessary components for an E85 conversion can be done at home with the right tools and knowledge. Here are some tips to make the process smoother:
- Ensure the car is on a level surface and securely lifted.
- Follow manufacturer instructions for each component.
- Take your time and double-check all connections.
- Consider seeking help from a professional tuner for ECU adjustments.
Performance Expectations
After completing the E85 conversion, drivers can expect significant performance improvements. Many users report gains of 100+ horsepower, making it an attractive option for WRX enthusiasts.
Tuning Results
With proper tuning, the WRX can achieve improved throttle response, increased torque, and higher peak horsepower. The result is a more engaging driving experience.
Conclusion
Converting your WRX to run on E85 is a cost-effective way to increase horsepower and enhance performance. With careful planning and the right components, achieving over 100 horsepower gains for under $2,000 is entirely possible. For any WRX owner looking to maximize their vehicle’s potential, an E85 conversion is a worthwhile investment.