Fuel Control

Eagle models are equipped with Carter BBD 2-barrel feedback carburetors which contain an electronically-operated stepper motor. This motor controls metering pins, which vary the size of idle and main air bleed orifices in the carburetor body.

The stepper motor moves pins in and out of the orifices in steps, in response to signals received from MCU. The motor has a range of 100 steps, but normally operates in the middle of its range.

When the metering pins move into the orifices, the air/fuel mixture becomes richer. When the pins move out of the orifices, the mixture becomes leaner.