Turbosmart TS-0203-1221 Kompact Plumb Back Blow Off Valve - 20mm

The Turbosmart Kompact Series Blow Off Valve (BOV) is engineered as a direct bolt-on replacement for factory plastic Bosch or Denso bypass valves. This fully recirculating plumb back system features a durable metal construction that delivers superior flow, complete adjustability, and enhanced structural integrity under high boost conditions.

Key Features:

• Fully recirculating design vents all excess pressure back into the intake system
• 20mm outlet diameter for precise fitment
• 100% bolt-on replacement for factory Bosch and Denso BOVs
• Fully adjustable spring tension for custom tuning
• Compact design ideal for constrained engine bays
• Silent operation—no external atmospheric venting sound
• Race-proven design tested in demanding motorsport environments

Application: Designed for vehicles equipped with factory Bosch or Denso bypass valves, including VW, Audi, Porsche, Seat, Saab, Mazda MX-5 (Miata), and Ford XR-6T. Also popular in motorcycle drag racing applications.

What's Included: Complete valve assembly with pictorial installation instructions for straightforward fitment.

The plumb back configuration recirculates boost pressure internally, preventing metered air loss and maintaining proper air/fuel ratios. This makes it ideal for mass airflow sensor-equipped vehicles and complies with street legality requirements in noise-sensitive areas.