Blow-Off Valve with In-Cabin Controller

The Go Fast Bits Deceptor Pro II (T9501) is an advanced blow-off and diverter valve engineered for turbocharged Subaru models, offering on-the-fly, in-cabin control over boost venting. This allows users to seamlessly switch between quiet recirculation and aggressive atmospheric venting sounds by simply turning a dial. Featuring a durable, high-performance design, the Deceptor Pro II is built to withstand high boost pressures and endure long-term daily driving. Its motorized valve operation employs a precision high-torque servo motor to ensure reliable and smooth transitions during venting. The direct bolt-on fitment means it replaces the factory Blow Off Valve (BOV) or Diverter Valve (DV) without requiring extensive modifications on most compatible Subaru applications. Key benefits include instant adjustment of both sound and airflow control, which helps reduce compressor surge and maintain boost between shifts. The valve is tunable to suit various driving needs, from daily comfort to spirited driving, and improves response over factory diverter valves with optimized flow and valve timing. It also enables quieter operation for street use or a louder sound for track or show environments. Installation is recommended to be performed by a professional, particularly for wiring the in-cabin controller. While tuning is not strictly mandatory, it is advised for optimal performance in high-boost or modified setups. Ensure vacuum and boost signal lines are in good condition prior to installation.