Al, I don't understand your reluctance to switch to controller B just to check.  I am not suggesting changing any thing if you had it set up on the dyno, but it would elminate the possiblity that the problem is with  controller A.  Switching to controller B  will not distrube your MAP settings that you have with controller A.  They both have their individual MAPs.

  
ED

Ed;

Not really reluctant – just hadn’t gotten too that yet, and felt I was closer to where I wanted to be on controller A.  Todays smooth run suggests it is close.  I’ll probably adjust as necessary through the load curve on A, and then transfer settings to B.  Seems I recall there is a way to do that, maybe with the EM2.

Al