What is multi-port injection?

Multi-port injection (MPI) is a fuel delivery system used in internal combustion engines where fuel is injected directly into the intake manifold, specifically near each intake valve. This allows for better atomization and mixing of fuel with air, improving combustion efficiency and engine performance. MPI systems typically provide better throttle response and lower emissions compared to older single-point injection systems. Additionally, they can help optimize fuel distribution across all cylinders, enhancing overall engine output.