Cobb Subaru 3-Port Boost Control Solenoid (BCS) - 2015-2021 Subaru WRX Phone Flash including the gas cap and

including the gas cap and newly added A/C line caps

Improved high-speed stability and cornering grip

If you have a BRZ with the performance package check here

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Cobb Subaru 3-Port Boost Control Solenoid (BCS) - 2015-2021 Subaru WRX Phone Flash including the gas cap andTUNING REQUIRED!! Supported in select COBB Off The Shelf Maps or contact your preferred Protuner for custom tuning. The COBB 3 Port Boost Solenoid (BCS) is an excellent upgrade for modern turbocharged vehicles, enabling precise boost control in a tidy package that is easy to install and tune. Our BCS will eliminate boost fluctuations inherent in the OEM boost control system, providing stable and repeatable boost control to base the vehicle's tune on.