I have been absent from the forum for a bit but I too have had issues with abs failure all season (not ice mode, separate issue and that's why I sadly can't run xp's
). It's been extremely frustrating as it's difficult to replicate and is random occurrence. My co-driver is inexperienced and flatspot corded an almost brand new set of 285 71's.
I also have a z1 diff cover that I added when I installed my pro-gt at the end of last season (and abs failures did not occur until this year)..