The scion functional objectives for fuel injection systems can vary. All share the central task of supplying fuel to the  injectors combustion process, but it is a design decision how a particular system will be  injectors optimized. There are several competing objectives such as:

• power output xb injectors
• fuel efficency
• emissions performance
• ability to accommodate alternative fuel xb injectors
• reliability
• driveability and smooth operation  injectors
• initial cost
• maintenance cost  injectors

Operational benefits to the driver of a fuel-injected car include smoother and more dependable engine response during quick throttle  transitions, easier and more dependable engine starting, better operation at extremely high or low ambient temperatures, increased maintenance intervals, and increased fuel efficiency.xb injectors  On a more basic level, fuel injection does away with the choke  which on carburetor-equipped vehicles must be operated when starting the engine from cold and then adjusted as the engine warms up xb injectors

A fuel-injected engine often produces more power than an equivalent carbureted engine. Fuel injection alone does not necessarily xb injectorsincrease an engine's maximum potential output.xb injectors Increased airflow is needed to burn more fuel, xb injectors which in turn releases more energy and produces more power. The combustion process converts the fuel's chemical energy into heat energy, whether the fuel is supplied by fuel injectors or a carburetor. However,xb airflow is often improved with fuel injection, the components of which allow more design freedom to improve the air's path into the engine. In contrast, a carburetor'sxb injectors mounting xb injectors options are limited because it is larger, it must be carefully oriented with respect to gravity, and it must be equidistant from each of the engine's cylinders to the xb injectors maximum practicable degree. These design constraints generally compromise airflow into the engine. Furthermore, a carburetor relies on a xb injecors xb  estrictive venturi   to create a local air pressure difference,xb injectors  which forces the fuel into the air stream. The flow loss caused by the venturi, however, is small compared to other flow losses in the induction system. In a well-designed carburetor induction system, the venturi is not a significant airflow venturi