SteamSpeed 4-Port Boost Control Solenoid (BCS) Universal

The SteamSpeed 4-port Electronic Boost Controller ups the ante again.  Our 3-port controller is vastly superior to the stock units, but our 4-port version goes further providing the maximum level of boost control available allowing more sophisticated boost control schemes allowing the tuner to have even more control and wider ranges of operation of the wastegate. Our 4-port controller can be used in many configurations, so consult your tuner to understand if a 4-port controller is right for your build, but typically, 4-port controllers are used with an aftermarket wastegate with ports on both sides of the wastegate's diaphragm.  The 4-port controller allow fine control on both sides of the diaphragm which provides finer grain control of the spring preload, etc. which enables a broader range of boost control on the wastegate.  Cool right? If your goal is to use the controller on both sides of the diaphragm, then you need to have a wastegate that supports it.  Many of our wastegates do h