Loading... Please wait...BCU+ Boost Controller Unit is a must have item for all turbo tuners and racers alike. Not only can this unit regulate boost levels on virtually any turbocharged vehicle, it also has a built in turbo timer and switching system. Since the BCU+ contains a boost controller, turbo timer, and switching device, each must be wired separately. This allows you to employ the features you wish to use, and ignore the ones you do not want to utilize.