Grimmspeed Boost Control Solenoid For Subaru 17-21 FA20 Canadian Spec Metal InletGRM 057054 This listing is specifically for the Canadian Spec 2017+ Domestic Market WRX with cast aluminum turbo inlet, instead of the composite inlet found on the USDM WRX The cast Canadian inlet features a coolant passage that is not found on USDM composite inlets. This coolant passage occupies space that the traditional mounting of the GrimmSpeed EBCS also occupies. Our solution is a simple modification to how the EBCS is mounted to the inlet and a