GFB Deceptor Pro II T9503 Adjustable Blow Off Valve, Subaru models

GFB Deceptor Pro II T9503 is an electronically adjustable blow-off / bypass valve for turbocharged Subaru models. The unique feature of the Deceptor Pro II is the ability to adjust the amount of venting directly from inside the car using the included controller. This allows you to choose between nearly silent bypass operation, a louder blow-off sound, or anything in between with infinitely variable adjustment to suit your mood.

An internal servo adjusts the valve mechanism and changes the airflow according to the selected setting. This allows you to change the sound of your car on the fly without opening the bonnet or mechanically adjusting the valve.

GFB Deceptor Pro II features

• Electronic adjustment of blow-off sound and venting from inside the cabin
• Infinitely variable adjustment from nearly silent bypass operation to a loud blow-off sound
• Compact backlit adjustment controller for the cabin
• Adjustable maximum blow-off limit
• Updated model with optimised airflow passages
• Durable, low-friction mechanism with precision bearings
• Compact design fits in place of the original valve
• Kit includes the required controller, wiring and installation hardware

Compatibility

The T9503 is designed for a range of Subaru WRX, STI and XT turbo models. Always check vehicle-specific compatibility before ordering.

• Subaru WRX MY01-02
• Subaru WRX MY03-05
• Subaru WRX MY06-07
• Subaru STI MY02
• Subaru STI MY03-07
• Subaru STI MY08-13
• Subaru STI 2014-2022 with EJ25 engine
• Subaru XT MY05-08 Series II*

*Some Subaru XT models manufactured before 03/2006 require the GFB T9000 model instead. Please check compatibility before ordering if necessary.