Originally Posted by DC2
There isn't a set good setting. Every motor responds different regardless if it's the same model. Best thing to do is get it tuned on the track/dyno.
Agreed. That would be assuming that you have the mods to need an air-fuel controller. Intake and exhaust are just basic bolt ons and don't require any extra fuel. I would take the VAFC off and let the stock ECU handle fueling for maximum efficiency at this point in time.