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The Subaru WRX has long been a favorite among car enthusiasts and racers alike. With its rally heritage and turbocharged performance, it’s a platform that can be taken to the next level with the right modifications. One of the most exciting upgrades for the WRX is the E85 conversion, which allows for more power and efficiency. In this article, we will explore how to make your WRX track-ready by upgrading the clutch, limited-slip differential (LSD), and aerodynamic components.
Understanding E85 Conversion
E85 fuel is a blend of 85% ethanol and 15% gasoline, offering a higher octane rating than standard pump gas. This allows for more aggressive tuning and increased power output. However, to fully utilize E85, your WRX will need several modifications to handle the increased demands on the engine and drivetrain.
Upgrading the Clutch
The stock clutch on the WRX is designed for everyday driving and may struggle under the increased power and torque that comes with an E85 conversion. Upgrading to a performance clutch is essential for ensuring reliable power transfer and improving overall driving experience on the track.
Choosing the Right Clutch
When selecting a clutch for your WRX, consider the following factors:
- Torque Capacity: Choose a clutch that can handle the increased torque from your tuned engine.
- Type: Options include organic, ceramic, or twin-disc clutches, each with its pros and cons.
- Daily vs. Track Use: Determine if you need a clutch that’s more street-friendly or one that’s optimized for the track.
Popular brands for performance clutches include Exedy, ACT, and South Bend, each offering various options tailored to different performance needs.
Upgrading the Limited-Slip Differential (LSD)
The WRX comes with an all-wheel-drive system, but the stock limited-slip differential may not provide the level of traction you need on the track. Upgrading to a high-performance LSD can significantly improve cornering and acceleration.
Benefits of a Performance LSD
A performance LSD offers several advantages:
- Improved Traction: Better power distribution to all four wheels, especially during hard cornering.
- Reduced Wheel Spin: Minimizes slip and maximizes grip, allowing for faster lap times.
- Customization: Many LSDs allow for adjustable settings to suit your driving style and track conditions.
Consider brands like Cusco, Kaaz, or Quaife for high-quality LSD options that are well-regarded in the performance community.
Aerodynamic Upgrades for Competitive Performance
Aerodynamics play a crucial role in a car’s performance, especially at high speeds. Upgrading the aero components of your WRX can improve stability, reduce drag, and enhance downforce, making it more track-ready.
Key Aerodynamic Components to Consider
When looking to upgrade your WRX’s aerodynamics, focus on the following components:
- Front Splitter: Helps to increase downforce at the front, improving grip during high-speed cornering.
- Rear Wing: Provides additional downforce and stability, especially at the rear of the vehicle.
- Side Skirts: Reduces air turbulence around the sides of the car, enhancing overall aerodynamic efficiency.
- Diffuser: Aids in managing airflow underneath the car, reducing drag and increasing downforce.
Brands like APR Performance, Seibon, and STI offer a variety of aerodynamic components designed specifically for the WRX, ensuring a perfect fit and enhanced performance.
Conclusion
Converting your WRX to run on E85 and upgrading critical components like the clutch, LSD, and aerodynamics can transform your car into a formidable track machine. With these enhancements, you’ll not only enjoy improved performance but also gain a competitive edge on the track. Always remember to tune your vehicle appropriately after making these upgrades to ensure optimal performance and reliability.