I have had DFCO disabled for AutoVE purposes but now that I look at the settings in the stock tune for my vehicle, it looks like it would have never kicked in anyway. The TP would never fall low enough to enable it. In my logs the lowest TP I see while in gear is 6% with the larger 90mm LS2 TB. I logged a stock 5.3 setup(78mm TB) and the lowest TP was 8%. I'll have to take a look at some other tunes, but unless I am missing something, it appears that DFCO is not really used on trucks. Is this correct? Here is my B3316: