Fuel INJ - MPI System: Description

The Multi-Point Injection system (MPI) is a computerized emission and fuel control system. The MPI system controls fuel delivery, ignition timing and idle speed. The system is designed to lower exhaust emissions while maintaining good driveability.

The Electronic Control Unit (ECU) is organizer of the MPI system. The ECU determines at which point each injector supplies fuel. The ECU also controls many of the fuel and ignition related systems to constantly adjust engine operation.