I always have wondered why the base fuel table has values that are either lambda=1, or lambda=.86 (or .82....whatever you WOT set to), but there is no transition. I know the PCM will interpolate to some degree, but I would think the table would be more precise if it had lambda=1 in the upper left section of the table and lambda=.84 in the lower right section, but also have transition lambda numbers in the middle part of the table that would be lambda= .90, .95, etc. so there was a smooth transition from idle to WOT.