I got my aem 30-334 installed and i am still running maf only with dfco disabled to cal my maf with eq ratio error instead of ltft. I have made some changes to the o2 sensor settings for the proportional and intergral tables and at 1400 rpms and above the switching is very consistent and tight. I think its better. I didnt notice the swings so much when using ltft but now with the wideband i notice when i am off the gas and coasting or decel on brake i am in open loop. Is this correct? this is really skewing my trims a lot and i believe its because of it switching to open loop. It mainly affects the low hertz regions from idle up to about 2400. I thought with the dfco disabled the truck would still be trying to maintain closed loop fueling. I have read about adjusting the LTFT idle cell thresholds using the Vss. am i on the right track or do i need to disable the dfco using more than just the engine temp? on a side not the o2 idle switching is still slightly slow. part throttle is looking good. Should i make more proportional/intergral adjustments trying to get idle tighter or leave it be and be more concerned with how they act under steady part throttle?