Hello All, Two questions. Working with 16197747, $OD, BJYL bin Engine has bored over throttle body from 42mm to 46mm and a Comp Cams CS XE249H-12, @.050 INT 206 & Ext 212 The engine idle is in cell #18 sometimes #19. The o2 sensor varies .900v to .050v with cross over counts adding up. I have been trying to find information on the BLM Cells to better understand how cells relate to the different driving parameters and relation to VE tables specifically ? Found some information here that led me to make changes to the BLM Boundaries so now I see greater variance in cells being used as I drive also all around drivability is noticeably better. My big thing is to see where the individual cells relate to groups of cells of the VE Tables. Another way to explain it what are the leaner to richer cells in the BLM. THANKS in ADVANCE