Probably a dumb question, but I cant seem to find a straight answer. IF (dont know for sure) my car was tuned and the tuner used lambda targeting 1.0 to tune it as opposed to targeting a specific AFR like 14.7:1 ect. Does it make sense that he would also adjust the stoich table in the tune to 14.08:1 from 14.7:1? From what i gather the whole reason you use lambda is to not have to jack with targeting certain AFRs. You just tune the car to a lambda of 1.0 and you are good to go....so if thats the case, and it was tuned to a lambda of 1.0....changing the stoich table in the tune would just jack that up wouldn't it? Can someone who knows better explain? Makes me think he was troubleshooting something during the tune process then just forgot to change the stoich table back to 14.7:1(stock). The documentation he gave me when i picked up the car shows the dyno run and HP/Torque curve with a target lambda of 1.0 along the x axis. This leads me to believe that it was tuned targeting a lambda of 1.0, and if so....shouldnt the stoich table have been left alone in the tune?