Hi
With a good or new vcu in my experience there there is always a
detectable amount of resistance on full lock in reverse in neutral.
it is as if the hand brake is slightly on.Hope this helps
I read in a magazine that the earlier IRD at 100 kph in 5th gear did 3150 rpm,and the later 2700 rpm.I do not know if this applies to a manual or a auto.I Have a Xedi year 2000 with a later IRD replacement and in 5th it revs at 2700.IT is a manual