Sensors and Systems+ACI-
Electronic Fuel Injection (EFI) systems can be a daunting mystery of sensors, wires, and components to those of us with a more “analog” background. Tuning by turning screws or swapping jets might seem second nature to some, but when it comes to fuel maps, electronic sensors, and laptop tuning, it starts to seem more like rocket science. But a familiarity to the science behind how an EFI setup works isn’t completely necessary to understand the gist of such a system. A basic understanding of the sensors involved and what they do and how they communicate with the computer (ECU) to provide the necessary fuel requirements can go a long way to gaining a grasp of how a modern EFI system works.
Like a carburetor measures and delivers fuel to a hungry engine via jets, ports, valves, metering blocks, and so on, an EFI system does the same by using a myriad of electronic sensors and a sophisticated computer (ECU) that gathers the information from said sensors, collates
