I think it has been pretty clearly documented on this forum and others that the Bosch computer is the source...
well, ABS Ice Mode finally got me... - Rennlist Discussion Forums
... all about liability management for bosch / nissan... easier for them to be conservative and kick-in an aggressive ABS system and explain that in the EVENTUALITY of lawsuits than it is to say they 'tuned the ABS in order to keep race cars out of barriers/walls when they are ripping through bumpy transitions under intense braking'
I think we are going to have to just learn to live with it and practice trying to "reset" the icemode (release, re-apply, and again if needed)... or replace the computer with a $10K race ABS computer
I am a skeptic... still, I'd welcome your experiment, Fritz/Guard Dad, and would be happy to be proven wrong and have you find a simple fix.. to confirm, perhaps there is a variable on the canbus we can pick up that will allow us to monitor vacuum pressure?