Sequential Fuel Injection (SFI) is a type of fuel injection system used in automotive engines. It is a refinement of the traditional multi-point fuel injection system, and is designed to provide more precise control over the fuel delivery to the engine. SFI systems use a series of injectors, each of which is triggered at a specific point in the engine's cycle. This allows for more precise control over the fuel-air mixture, resulting in improved engine performance and fuel economy. SFI systems are typically more expensive than traditional multi-point fuel injection systems, but the improved performance and fuel economy can make them a worthwhile investment. They are also becoming increasingly popular in the aftermarket, as they can be used to upgrade existing engines. Some of the companies in the Sequential Fuel Injection market include Bosch, Delphi, Denso, Siemens, and Continental. Show Less Read more
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