Wonder no more as Go Fast Brett delves into the turbo charger and explains how boost works, DIY Electronic Boost Controller boost controller .Electronic Boost Controller up to bar boost. Only change these if you understand how PID works. Default settings are P=, I=, D=. Switch from BAR to PSI..A boost controller controls the amount of manifold pressure by changing the amount of pressure going to the wastegate. For example if you wish to increase your boost .How a three port and four port electronic boost controller works and controls boost pressure Port Vs port boost controllers . Contributed by Enginebasics.com.
How electronic boost controller works