Cars Simplified: Everything Automotive Explained

Sequential Fuel Injection

Sequential Fuel Injection, or SFI, is a type of fuel injection system which uses one injector per cylinder, timed so that it injects fuel only when the particular intake path needs it, which is any time the intake valve opens so the piston can draw in air.

The intake manifold on this engine states that it is equipped with Sequential Fuel Injection

The advantages to this type of injection include improved horsepower, emissions, fuel mileage, and less fuel deposits in the intake manifold.