Seems like most run at those same settings. That's what mine is set at, only because that was the advice given here. What do the 3 numbers indicate (I forgot)? Maybe I'll start playing around with it, too.
No it doesn't take away fuel only adds. I talked with Jamie at Fuelmoto. Experiment all you want with this feature is basically what he said. Now if you are already running lean this does not fix your map though. Good luck. I found that the lower I went on the sensitivity, the first number, the more it tended to bog - too much fuel.