About this range
Deceptor Pro II T9500 Diverter / Blow Off Valve with Electronic Sound Adjustment System for Subaru Applications
Now you can control the sound of the BOV from inside the cabin!
So how much more can you do with a blow-off 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
Direct bolt-on for most vehicles available:
- 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
Vehicle Applications
Deceptor Pro II T9500 Diverter / Blow Off Valve with Electronic Sound Adjustment System for Subaru Applications also suits:
- SUBARU GT MY98-00
- SUBARU XT MY03-04 (series I)
- SUBARU WRX MY99-00
- SUBARU WRX MY99-00
- SUBARU GT MY01-02
- SUBARU B4 (BE, BH, BT) EJ20TT MY98-03
- SUBARU STi MY99-00
- SUBARU Impreza 2.0 Turbo GT EJ205 MY98-00