How to change AFR?

[TheMispeled]

The AFR seems to be always 13.3, no matter what build i use

[yvesJotres]

Use "molecular_afr" inside Intake node

intake intake(
        plenum_volume: 4.5 * units.L,
        plenum_cross_section_area: 10.0 * units.cm2,
        intake_flow_rate: k_carb(800.0),
        runner_flow_rate: k_carb(300.0),
        runner_length: 10.0 * units.inch,
        idle_flow_rate: k_carb(0.38),
        idle_throttle_plate_position: 0.98435,
        molecular_afr: 14.5,
        velocity_decay: 0.1
    )