October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

SPFI CEC System: Description

Subaru vehicles equipped with Single Point Fuel Injection (SPFI) have an on-board computer that controls both fuel and ignition. It electronically controls amount of fuel injected by monitoring exhaust gases with an oxygen sensor.