GrimmSpeed Boost Control Solenoid Turbo Inlet Adapter Subaru WRX FA20 15-16

The machined adapter also features standard NPT threads, should you choose to upgrade to AN lines and fittings, or even a different boost control solution (manual, standalone, hybrid, etc) down the road. Finally, the GrimmSpeed BCS system will arrive fully assembled and ready for installation.

The advantages of a 3-port boost control system vs. the factory 2-port system are readily apparent during the tuning process. The 3-port systems works by interrupting the boost signal traveling from the turbo to the wastegate. That boost is redirected back into the turbo inlet and re-ingested by the turbo using our machined adapter. This is important, as the factory Mass Airflow Sensor has already measured that air and is expecting that your motor will use it during combustion, rather than venting it to the atmosphere. The factory configuration simply 'bleeds' the signal from between the turbo and wastegate, which creates a system that is a bit less complex, but reacts more slowly and with less precision.

Because this upgraded solenoid affects the way that your vehicle controls boost (that's the point!), it is always recommended that you consult with a tuner immediately following installation. It is not recommended that you drive the car in a way that builds boost without doing so. If you have any questions, don't hesitate to get in touch with us directly!

Features:

Custom Machined Adapter - Makes use of the factory inlet recirculation port, instead of blocking it off
Black Anodized Finish - Protects the assembly from corrosion in an extremely demanding environment
Viton O-Ring - Increased durability and resistance to oil/gasoline
Machined and anodized turbo inlet adapter with VITON O-Ring
Zinc plated barbed 1/4in fitting, preassembled with anaerobic sealant
4ft of 1/4in Vacuum Hose with zipties
Laser cut universal mounting bracket
All necessary hardware

Fitments:

Subaru WRX FA20 2015-2022
Other Part Numbers:
GrimmSpeed #grm057047