BMS JB4 Port Injection ControllerThe Burger Motorsports JB4 Port Injection Controller attaches to the JB4 allowing it to directly control both traditional port injection kits and WMI port injection kits. What is the difference between the SplitSecond AIC6 as a stand alone and the JB4 Port Injection controller? The AIC6 is a simple stand alone system that allows mapping of port injection as a function of boost pressure and engine speed. The JB4 port injection controller is a fully