Fuel Control

The Porsche 944 is equipped with the Bosch Air Flow Controlled (AFC) fuel injection system. The AFC system is electronically controlled by the ECU, which is programed to regulate fuel injection based upon information received from various data sensors. It also considers the specific data for the 944 engine (stored in computer memory).

The ECU generates control signals for the fuel pump relay, auxiliary air valve, cold start injector coil, and the cylinder port injector coils. These devices control cold idle, curb idle speed and mixture, air/fuel ratio and fuel supply.