What is the main advantage of electronic fuel injection (EFI) over traditional carburetors?

The primary advantage of electronic fuel injection (EFI) over traditional carburetors is the more precise fuel delivery that EFI systems provide. This precision is achieved through advanced electronic controls, which continuously monitor and adjust the fuel-air mixture based on various parameters such as engine temperature, load, and speed. This capability ensures that the engine receives the optimal amount of fuel for efficient combustion.

As a result, EFI systems significantly improve fuel efficiency by enabling more complete combustion, which not only enhances performance but also helps in reducing fuel consumption. Additionally, because of this precise control, emissions can be better managed, leading to compliance with stricter environmental regulations. In contrast, carburetors rely on mechanical processes that can lead to variations in fuel mixture and less consistent performance across different operating conditions.

While other elements of engine performance, such as durability, reliability, manufacturing costs, and noise levels, are important, the defining characteristic that sets EFI apart is its ability to achieve better fuel efficiency and emissions control through precise electronic management.