Has a lot to do with the combination. If you’re on the edge of detonation a little richer can help but it should start out fairly close to stoichiometric at idle and get gradually leaner under “light” acceleration. So 14.3-14.8 idle, 14.5-15.0 light accel, and go pretty rich as load and rpm increase. 12.6-13.2 or so at wot full load.
