* HKS SSQV Blow Off Valve is a popular choice for its excellent performance and distinctive "whoosh" sound. It features a unique double-piston design that provides quick and efficient pressure relief. However, it is relatively expensive compared to other options.
* Turbosmart Kompact Plumb Back Blow Off Valve is a good option for those looking for a more affordable blow off valve without sacrificing performance. It offers consistent boost response and minimal turbo lag. It is also quite compact, making it easy to install in tight spaces.
* Forge Motorsport Atmospheric Blow Off Valve is known for its loud and aggressive blow off sound. It provides excellent pressure relief and quick boost recovery. However, it is not street legal in some areas due to its noise level.
* Greddy Type RS Blow Off Valve is a reliable and affordable option that offers good performance and a moderate blow off sound. It's easy to install and comes with several spring options to adjust the blow off pressure.
* Go Fast Bits (GFB) Respons Blow Off Valve is highly regarded for its quick response and high flow rate. It helps eliminate boost leak and reduces turbo lag. It also comes with different spring options for customized pressure settings.
Consider factors such as performance, sound preference, budget, and legality when choosing the best blow off valve for your 2004 Subaru WRX turbo.
