Cross fire fuel injection is a method of injecting fuel into an engine in multiple directions across the cylinder. Fuel injected from multiple directions causes better spray penetration of the air mass inside the cylinder and thus better mixing of fuel and air which allows greater combustion efficiency which means more work from less fuel consumed thus better throttle response, more stable idle as well as smoother shifts along with reduced NVH (Noise, Vibration, Harshness). All of this also aids in reducing the emissions output.
Typically all cars manufactured currently use this kind of technology because of its efficiency compared to sequential multipoint fuel injection or single-point injection.
