Edelbrock Pro-Flo 4 EFI System #35650 is an advanced sequential-port EFI system for 1970-1991 AMC 304, 360, 390, 401 CID engines. This EFI kit a multi-port design with an injector at the end of each runner on the manifold to deliver the best fuel atomization with even distribution to the combustion chambers. The Pro-Flo 4 EFI for AMC features our high-performance Victor Jr.-style single-plane intake manifold that comes preassembled with high-flow injectors, fuel rails and 4150-flange throttle body. This kit is compatible with factory-style cylinder heads or Edelbrock Performer and Performer RPM Cylinder heads. Includes a distributor designed to work specifically with Pro-Flo 4 providing sequential port injection and infinite control over ignition and fuel events. This system is rated for 550 horsepower at 58 PSI with all supporting sensors, ECU, wire harnesses and 7-inch Android tablet for streamlined installation. Calibration of the Pro-Flo 4 is a simple process with a Setup Wizard providing guidance through the E-Tuner’s initial programming. Once provided with basic information such as type of engine, cubic inches, firing order, and cam profile, the E-Tuner then selects the most appropriate base calibration. Once the base calibration is set, the self-learning E-Tuner takes over to continually maximize the fuel map according to the way you drive your vehicle, even compensating for changes in altitude and weather. The E-Tuner provides more advanced tuning options that allow precise control over cold starts and acceleration while retaining the simplicity that Pro-Flo systems are known for.