2002-2007 Subaru WRX / 2004-21 STI DECEPTOR PRO II Blow Off Valve Venting Bias Kit by Go Fast Bits (T9503)

Go Fast Bits
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$441.00 $490.00Instant Savings of 10% ($49.00)

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GFB Blow Off Valve - Deceptor Pro II:

Blow-off Valves Deceptor Pro II - Now you can control the sound of the BOV from inside the cabin!

So how much more can you do with a blow-o ff valve?


Well, the Deceptor Pro II takes the ‘Respons' concept even further:


  • Adjust your BOV venting bias electronically on-the-fly
  • Revised porting to optimise flow and venting bias
  • Compact design fits in most factory valve locations
  • Direct bolt on for many vehicles
  • New bore finishing process ensures a lifetime of reliable operation

Deceptor Pro II features

  • Remote proportional venting bias/volume control- from silent to loud or anywhere in between
  • Sleek, compact in-car BOV volume controller with backlit dial
  • End point adjustment to control maximum vent to atmosphere bias setting
  • Volume adjustment mechanism driven by a high-torque geared electric motor
  • Durable, low-friction ger train supported by precision sealed ball-bearing
  • Supplied with all parts and wiring required to have it up and running quickly and easily


  • 2002-2007 Subaru WRX
  • 2004-2021 Subaru STI



Customer Reviews

Based on 1 review
Great BOV!

This is Great BOV! Controlling the venting is great(noise)! Easy to install!