When asking for technical help at the very least let us know the version of firmware you are running.Cliff's Calibration (Mapping) Guide is a MUST READ: http://www.vemssupport.com/forum/index.php/topic,97.0.html
I lowered the target lambda at the bottom of my map, and upped the VE values, and it worked like a charm. I get this nice dip in lambda when I let off, then it cuts fuel. I'm very happy with it. Thanks dnd.