Grimmspeed Boost Control Solenoid GrimmSpeedGRM 057060 The Original Direct Fit BCS for Subarus Now for ANY Platform! When it comes to boost control on turbocharged engines, GrimmSpeed Direct Fit, 3 Port Electronic Boost Control Solenoids for Subaru, Mitsubishi and Mazda have set the standard in the industry. With that popularity, have come requests for additional fitments for other makes and models throughout the years. It is impossible for us to manufacture a direct fitment for every platform