MPFI CEC System: Description

Multi-Point Fuel Injection (MPFI) system supplies optimum air/fuel mixture to engine under various operating conditions through use of MPFI Control Unit.

To control amount of fuel injected, an intermittent injection system, with an electro-magnetic injection valve (fuel injector), opens for short bursts. Amount of fuel injected is determined by duration of an electric pulse applied to fuel injector. See SUBARU VACUUM DIAGRAMS in EXHAUST EMISSIONS section.