$70 out of area shippingDual Port Blow Off Valve Subaru WRX STI FORESTER GT XT EJ20 impr

BOV 38mm Loud ATMOSPHERIC blow off valve ADJUSTABLE Trumpet
View Full-Size Image

BOV 38mm Loud ATMOSPHERIC blow off valve ADJUSTABLE Trumpet

Price: $100.00

Ask a question about this product

(Black) so the cops dont notice it as soon as you open your bonnet

Universal 38mm Supersonic Blow Off Valve BOV
perfect size outlet for Mitsubishi Evo & ralliart cars but can be used on any turbo car with 38mm fittings

  • Universal weld on 38mm fitting
  • Also perfect tight fit for all Mitsubishi Evolution models
  • Colt Lancer Ralliart
  • 3000GT GTO
  • 4G63 4B11T engines
  • Subaru Liberty/Legacy GT MY09-current

With its HUGE trumpet this Universal 38mm adjustable, with a Quick-release V-Band clamp is a impressive piece of art and sounds amazing when the boost pressure is released into the atmosphere


Remove the restricting stock blow off valve and replace it with this unit

Designed for street to high performance applications Purpose built to bolt on the engine for Maximum flow and maximum noise

No adapters required Quick and easy fitment.

BOV is adjustable & vents to atmosphere, trumpet can be blocked with parts supplied to be plumbed back

Factory bypass valves they are often undersized and are quickly beyond their capable operating range as airflow levels are increased. Upgrading your BOV will increase engine performance from quicker turbo spool up, as the compressor speed is not reduced by the backwards airflow.

The life and quality of the turbo is also increased, as it will not suffer from the harsh and negative impact that is also produced by compressor surge.. Certain applications will need adapters available from any exhaust installers otherwise easily DIY


In Stock: 3

Usually ships in: