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
Yep,I also had that problem with the AE86 i made, and i did not understand it , becourse it´s like it´s the otherway around,Its getting rich when cold, and lean when hot, were i would think it was the other way around,I just made ,so the wideband was able to make the big difference in the fuel trim, ./Skassa