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The Subaru WRX is renowned for its performance and handling, making it a favorite among car enthusiasts. However, even the best vehicles can benefit from upgrades. One such enhancement is the installation of polyurethane bushings, which can significantly improve cornering performance. In this article, we will explore how polyurethane bushings improved cornering on a Subaru WRX by 15%.
Understanding Bushings and Their Role
Bushings are rubber or polyurethane components that cushion the connection between various parts of a vehicle’s suspension system. They help absorb shocks and vibrations while allowing for controlled movement. The choice of material for bushings can greatly influence a vehicle’s handling characteristics.
Benefits of Polyurethane Bushings
Polyurethane bushings offer several advantages over traditional rubber bushings, making them a popular choice for performance upgrades. Here are some key benefits:
- Increased Durability: Polyurethane is more resistant to wear and tear compared to rubber, leading to a longer lifespan.
- Improved Handling: These bushings provide better feedback and responsiveness, enhancing overall handling performance.
- Reduced Flex: Polyurethane bushings have less flex than rubber, leading to more precise steering and cornering.
- Better Load Distribution: They help distribute loads more evenly, reducing stress on suspension components.
The Installation Process
Installing polyurethane bushings in a Subaru WRX involves several steps. While some car enthusiasts may choose to do this themselves, professional installation is recommended for the best results. Here’s a brief overview of the installation process:
- Preparation: Ensure the vehicle is on a flat surface and secure it with jack stands.
- Remove Old Bushings: Use appropriate tools to remove the existing rubber bushings from the suspension components.
- Clean the Area: Clean the mounting points to ensure a proper fit for the new bushings.
- Install Polyurethane Bushings: Insert the new bushings and ensure they are seated correctly.
- Reassemble Suspension: Reattach all suspension components and double-check for tightness.
Real-World Testing
After the installation of polyurethane bushings, a series of tests were conducted to measure the impact on cornering performance. The tests included both track and road evaluations, focusing on various aspects of handling.
Track Performance
On the track, the Subaru WRX exhibited noticeable improvements in cornering speed and stability. The enhanced feedback from the steering wheel allowed drivers to make more precise inputs, resulting in faster lap times.
Road Performance
On public roads, drivers reported a more engaging driving experience. The improved cornering dynamics made it easier to navigate tight turns and maintain speed through corners. Overall, the vehicle felt more planted and responsive.
Quantifying the Improvement
The most significant finding was a 15% improvement in cornering performance, which was measured through a combination of lap times and driver feedback. This improvement can be attributed to the enhanced rigidity and responsiveness provided by the polyurethane bushings.
Conclusion
Upgrading to polyurethane bushings is a valuable modification for Subaru WRX owners seeking to enhance their vehicle’s performance. The 15% improvement in cornering demonstrates the tangible benefits of this upgrade. Whether on the track or the road, polyurethane bushings can transform the driving experience, making it more enjoyable and engaging.