What A/F ratio should I be looking for at cruise (3300 rpm) with about 9" of vacuum. Anyone got any thoughts.
I run an EFI system at 14:1 while cruising at around 10" vaccuum.
It varies a little as the engne runs between 13.8:1 and 14.2:1
At a 3000 rpm cruise speed the injectors are running at 1.8 milliseconds per revolution on a batch fire EFI system.
At WOT I'm at 12:1 / 7000 rpm / 6.9 milliseconds per revolution.