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The Subaru WRX is known for its performance and distinctive sound. One of the critical components affecting both is the header system. In this article, we will explore the sound differences between stock headers and various aftermarket brands, focusing on their performance and tone.
Understanding WRX Headers
Headers are an essential part of the exhaust system, responsible for directing exhaust gases from the engine to the exhaust pipe. The design and material of the headers can significantly impact performance, sound, and overall driving experience.
Stock WRX Headers
The stock headers on the WRX are designed primarily for reliability and emissions compliance. They provide adequate performance for daily driving but often lack the aggressive sound that many enthusiasts desire.
Performance Characteristics
Stock headers typically offer:
- Good fitment and installation ease.
- Compliance with emissions standards.
- Moderate performance gains.
Sound Profile
The sound produced by stock headers is often described as subdued and refined. While it does provide a sporty tone, it may not satisfy those looking for a more aggressive exhaust note.
Aftermarket Header Options
Aftermarket headers come in various designs and materials, each offering different performance enhancements and sound characteristics. Here, we will discuss some popular brands and their offerings.
1. Invidia Headers
Invidia is known for producing high-quality exhaust components. Their headers are designed to improve flow and reduce back pressure.
Performance
Invidia headers provide:
- Significant horsepower and torque gains.
- Improved throttle response.
Sound
The sound produced by Invidia headers is aggressive and deep, providing a noticeable increase in volume and a more pronounced tone.
2. Tomei Headers
Tomei headers are another popular choice among WRX enthusiasts, known for their high-performance capabilities and unique design.
Performance
Tomei headers offer:
- Excellent flow characteristics.
- Lightweight construction.
Sound
The sound from Tomei headers is often described as raspy and aggressive, appealing to those who want a loud exhaust note.
3. Perrin Headers
Perrin is known for producing durable and effective performance parts. Their headers are designed to optimize exhaust flow while maintaining a robust build quality.
Performance
Perrin headers provide:
- Enhanced performance across the RPM range.
- Improved exhaust scavenging.
Sound
The sound produced by Perrin headers is aggressive yet refined, striking a balance between performance and daily drivability.
Comparative Sound Test
To truly understand the differences in sound, we conducted a sound test comparing stock headers to the aftermarket options mentioned above. The following summarizes the findings.
Testing Methodology
The sound test was conducted under similar conditions, ensuring that each header was evaluated on the same vehicle with consistent RPM levels.
Results Overview
Here’s a summary of the sound characteristics observed during the test:
- Stock: Subdued, refined, and moderate volume.
- Invidia: Aggressive, deep, and loud.
- Tomei: Raspy, aggressive, and very loud.
- Perrin: Aggressive yet refined, balanced volume.
Conclusion
Choosing the right headers for your WRX depends on your performance goals and sound preferences. Stock headers provide reliability and compliance, while aftermarket options like Invidia, Tomei, and Perrin offer enhanced performance and a more aggressive sound profile. Ultimately, the decision should align with your driving style and personal taste.