High Performance WRX Blow-Off Valve Upgrade Options
Understanding Blow Off Valves for Subaru WRX
The Subaru WRX has long been a favorite among performance car enthusiasts. One of the most popular modifications for the WRX is the installation of a blow off valve (BOV). In this article, we will explore what a blow off valve is, its benefits, and the different types available for the WRX.
What is a Blow Off Valve?
A blow off valve is a crucial component of a turbocharged engine. It releases excess pressure from the intake manifold when the throttle is closed, preventing compressor surge. This not only protects the turbocharger but also improves the overall performance of the vehicle.
Key Benefits of Installing a Blow Off Valve in Your WRX
- Improved Turbo Longevity: By relieving excess pressure, a BOV helps to prevent damage to the turbocharger, thereby extending its life.
- Enhanced Engine Performance: A properly functioning blow off valve contributes to better airflow and responsiveness, leading to improved overall performance.
- Distinctive Sound: Many WRX owners appreciate the signature whoosh sound that a blow off valve produces. This not only enhances the driving experience but also signals that your vehicle is tuned for performance.
Types of Blow Off Valves for Subaru WRX
When choosing a blow off valve for your WRX, you have several options. The two main types are atmospheric BOVs and recirculating BOVs.
Atmospheric Blow Off Valves
Atmospheric BOVs vent excess pressure to the atmosphere, creating the iconic sound that many enthusiasts love. However, they may cause issues with engine performance, particularly in vehicles with factory tuning.
Recirculating Blow Off Valves
Recirculating BOVs route the excess pressure back into the intake system, which helps maintain air-fuel ratio. This makes them a preferred choice for those looking to maintain factory performance while still benefiting from a BOV.
Installation Considerations
Installing a blow off valve on your WRX may require some technical skills, depending on the type you choose. Here are a few things to consider:
- Compatibility: Ensure that the BOV you select is compatible with your specific WRX model and year.
- Tuning: If you opt for an atmospheric BOV, consider a tune to optimize performance and engine management.
- Quality Brands: Look for reputable brands like HKS, Greddy, or Cobb Tuning to ensure quality and reliability.
Conclusion
Installing a blow off valve on your Subaru WRX can enhance performance, protect your turbo, and give your vehicle a unique sound. Whether you choose an atmospheric or recirculating valve, make sure to do your research and select a product that best fits your driving style and needs. With the right blow off valve, your WRX will not only perform better but also sound great!
