Always enjoy returning to the thread and reading the updates, your thoroughness and attention to detail, i find particularly appealing. Have you ever considered doing youtube videos?

How are you finding the vortex breather? I have noticed smoke on start up, checked my turbos, i was about to go the route of a Provent occ, but it seems like it brings on it's own set of issues, especially during winter months. Has the vortex breather solved the smoke issue? Also how much of an improvement in terms of dynamics has that rear diff with the icm module proved to be? I have one of those diffs, but i just upgraded to front and rear 3:15 diffs; debating if to get the harness and modules and install this diff (mine is from an F85).