Could someone shed some light on this for me? Why or what is commanded AFR if the AFR is mainly controled by the VE table? What does changing this value do? Does this value matter in a OLSD situation? and since I am you all to death, what is the best AFR to try to maintain? I know 14.7 is the best burn, but I remember reading that the LS1 liked low 13's for a ratio, is that just cruising around? or under load? The more I learn....the more I need to know....