GFB G-Force III Electronic Boost Controller w/4-Port Solenoid - 3008The G Force III is a sophisticated stand alone electronic boost controller that can be used on a wide variety of turbo engines that use a pressure actuated wastegate (NOT suitable for use with electronic or vacuum actuated wastegates). Available with a 3 port or 4 port MAC solenoid valve, depending on your boost control needs: Kit# 3005 Includes a MAC 3 port solenoid and is the best choice on turbo systems where the highest target boost is less than