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The Subaru WRX has long been a favorite among car enthusiasts, particularly for those who enjoy track days and spirited driving. The VA generation of the WRX, introduced in 2015, has proven to be a solid platform for performance upgrades. In this article, we will explore how to transform a stock VA WRX into a track-ready machine capable of producing over 400 horsepower while significantly improving handling.
Understanding the VA WRX Platform
The VA WRX is built on a robust chassis that offers a good balance between comfort and performance. It features a turbocharged 2.0-liter flat-four engine, all-wheel drive, and a sport-tuned suspension. However, to unlock its full potential, several modifications are necessary.
Power Upgrades
To achieve over 400 horsepower, several key modifications are essential. Below are the main components that should be considered for a performance build.
- Turbocharger Upgrade: Replacing the stock turbo with a larger unit can significantly increase power output.
- ECU Tuning: A performance tune is necessary to optimize the engine’s performance and fuel mapping.
- Intake System: Upgrading to a high-flow intake system allows for better airflow to the engine.
- Exhaust System: A performance exhaust system reduces back pressure and enhances engine sound.
- Intercooler Upgrade: An upgraded intercooler helps maintain lower intake temperatures, improving performance.
Turbocharger Upgrade
Upgrading the turbocharger is one of the most effective ways to increase horsepower. Options such as the Garret GTX series or the FP Black turbo are popular choices among enthusiasts. These turbos can support higher boost levels and provide a significant increase in power.
ECU Tuning
After installing a new turbo, an ECU tune is crucial to ensure the engine runs efficiently. Tuning can be done through various software options, with reputable tuners providing custom maps tailored to your specific setup.
Intake and Exhaust Upgrades
A high-performance intake and exhaust system will complement the turbocharger upgrade. Look for brands that offer complete systems specifically designed for the VA WRX to maximize performance gains.
Handling Improvements
In addition to increasing horsepower, improving handling is critical for a track-ready build. Here are some essential upgrades to consider:
- Suspension Upgrade: Investing in coilovers or performance springs can drastically improve handling and stability.
- Braking System: Upgrading to larger rotors and performance pads will enhance stopping power.
- Wheel and Tire Package: Lightweight wheels and high-performance tires provide better grip and reduce unsprung weight.
- Alignment and Camber Adjustments: Proper alignment settings can improve cornering and tire wear.
Suspension Upgrade
Coilovers allow for adjustable ride height and damping, which is essential for optimizing handling on the track. Brands like KW and BC Racing offer excellent options for the VA WRX.
Braking System
Improving the braking system is vital for safety and performance. Upgrading to performance brake pads and larger rotors can significantly reduce brake fade during extended track sessions.
Wheel and Tire Package
Choosing the right wheels and tires can enhance traction and handling. Look for lightweight wheels that reduce rotational mass and high-performance tires that provide excellent grip in various conditions.
Final Touches
Once the major performance and handling upgrades are complete, consider adding finishing touches to your build. These can include:
- Aerodynamic Enhancements: Front splitters, rear wings, and side skirts can improve downforce.
- Weight Reduction: Removing unnecessary components or switching to lightweight materials can enhance performance.
- Interior Modifications: Consider replacing seats with lightweight racing seats for better support.
Aerodynamic Enhancements
Adding aerodynamic components can help improve stability at high speeds. Popular options include front splitters and rear spoilers designed specifically for the VA WRX.
Weight Reduction
Every bit of weight saved can contribute to better acceleration and handling. Consider lightweight wheels, carbon fiber components, and removing non-essential interior parts.
Interior Modifications
For track-focused builds, lightweight racing seats can provide better support and save weight. Additionally, consider a roll cage for enhanced safety during track events.
Conclusion
Transforming a stock VA WRX into a track-ready machine capable of over 400 horsepower is an exciting journey. By focusing on power upgrades, handling improvements, and final touches, enthusiasts can create a car that not only performs well on the track but also provides an exhilarating driving experience. Always remember to balance performance with safety, and enjoy the ride!