I set the throttle setting to **, and the car seems to be smoother in transition from vacuum to boost. I still get a CEL once in a while under some circumstances, but having the fuel setting RPM dependent, rather than throttle angle dependent has made the programming a little simpler. Usually you have to set all of the maps, but under this setting you only set the WIDE map, and it carries over to NARROW as well..interesting.. :idea: