Multi Port Fuel Injection (MPFI) is the most efficient type of fuel injection system. All vehicles built today incorporate this type of fuel injection for emissions compliance, economy, driveability and reliability. An MPFI unit incorporates a fuel injector at each cylinder directly above the intake valve. The Intake manifold is then a regulator of air allowed into the engine with the fuel control taking place by the ECM. This type of fuel injection unit allows for very flexible intake manifold designs compared to the TBI systems. Another big advantage with an MPFI system is engine efficiency. By incorporating an injector above each intake valve air/fuel distribution from one cylinder to the next is very consistent. With this consistency comes better performance, driveability and fuel economy. An AFI marine MPFI system will breathe new life into your boat. In most cases, you will get better fuel economy, more horsepower and a longer-lasting engine with this system. This system is a great investment that will increase the resale value of your boat. No more fouled out plugs when idling, starts right up every summer even after being stored all winter, and it never needs tuning. |
