Hold on... The E9x M3 does not have a CDV. It has a part that would appear to be a CDV, but it is hollow and does nothing. This has been confirmed a long time ago on m3post:
http://www.m3post.com/forums/showthread.php?t=153462
I don't think we can say for sure until someone takes off the "CDV" on the 1M and checks if it is hollow or actually has the internals to delay the clutch.
EDIT:
Ok, the part according to real oem is shared with all the other non-M cars, so it would appear that we have a functioning CDV in this car.