Basics of M.P.F.I System

Multi-point fuel Injection system (MPFI) system is the modern fuel injection system that is utilized for gasoline engine and it is controlled by the Electronic Control Module(ECU).

MPFI system is broadly categorized into two ways: Port injection and Throttle body injection system. Many Manufactures classified them like D-MPFI and L-MPFI systems too according to their control mechanism.

This video comprises a basic understanding of the MPFI system with a brief about the D-MPFI and L-MPFI arrangements. In this video, you can understand the basic difference between these two.

Port injection: 01:22
Throttle body Injection: 02:28
D- MPFI: 04:55
L- MPFI: 06:48