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The B9 Audi A4 2.0T is a popular choice among car enthusiasts looking for a balance of performance and efficiency. One of the most effective modifications to enhance the power output of this vehicle is the conversion to E85 fuel. This article explores the benefits, process, and considerations of converting a B9 A4 2.0T to run on E85, leading to gains of 60+ horsepower at an investment of approximately $1,200.
Understanding E85 Fuel
E85 is a fuel blend consisting of 85% ethanol and 15% gasoline. This high ethanol content allows for a higher octane rating, which can significantly improve engine performance. Ethanol also burns cooler than gasoline, reducing the chances of engine knock and allowing for more aggressive tuning.
Benefits of E85 Conversion
- Increased Horsepower: The most notable benefit is the substantial increase in horsepower, often exceeding 60 hp with proper tuning.
- Improved Torque: E85 can also enhance torque, providing better acceleration and overall performance.
- Cost-Effective: E85 is generally cheaper than premium gasoline, which can lead to savings at the pump.
- Environmental Impact: Ethanol is a renewable resource, making E85 a more environmentally friendly option compared to traditional gasoline.
Conversion Process
Converting your B9 A4 2.0T to run on E85 involves several key steps. Below is a simplified outline of the conversion process:
- Fuel System Upgrade: Ensure that the fuel system can handle the higher flow rates required for E85. This may involve upgrading the fuel pump and injectors.
- Tuning: A proper ECU tune is essential to optimize performance and fuel delivery for E85. This is typically done using a professional tuner.
- Flex Fuel Sensor: Installing a flex fuel sensor allows the engine to automatically adjust to varying ethanol content in the fuel.
- Fuel Lines and Filters: Consider replacing fuel lines and filters with ethanol-compatible materials to prevent degradation over time.
Cost Breakdown
The estimated cost of converting a B9 A4 2.0T to E85 is around $1,200. Here’s a breakdown of the potential costs:
- Fuel Pump Upgrade: $300 – $500
- Injectors: $400 – $600
- ECU Tuning: $500
- Flex Fuel Sensor: $200 – $300
- Miscellaneous Parts: $100
Performance Expectations
After completing the conversion and tuning, drivers can expect noticeable performance improvements. The following are typical outcomes:
- Horsepower Gains: Expect gains of over 60 horsepower depending on the specific modifications and tuning.
- Torque Improvements: Torque increases can enhance drivability and responsiveness.
- Fuel Economy: While E85 may offer lower miles per gallon, the overall performance gains often outweigh this drawback.
Considerations and Precautions
While converting to E85 offers numerous benefits, there are important considerations to keep in mind:
- Availability: Ensure that E85 is readily available in your area before committing to the conversion.
- Compatibility: Verify that all components of your fuel system are compatible with ethanol to avoid damage.
- Maintenance: Regular maintenance is crucial to ensure optimal performance and longevity of the fuel system.
- Insurance and Warranty: Check with your insurance provider and warranty details, as modifications may affect coverage.
Conclusion
Converting a B9 Audi A4 2.0T to E85 fuel can yield significant performance gains and enhance the driving experience. With an investment of around $1,200, enthusiasts can unlock over 60 additional horsepower while enjoying the benefits of a renewable fuel source. However, it is essential to ensure proper installation, tuning, and maintenance to maximize the benefits of this conversion.