Boost control valve 1,Fob price:Get latest price 2,MOQ:1 pc 3,Packing:20pcs/ctn 4,Color: Purple Boost control valve1, ... your wastegate boost setting. An effective and simple way to control boost level and general more power from your engine. ... Mechanical Boost Controller . is a manual boost control sysytem that utilizes a pneumatic regulating valve to manipulate boost pressure levels.