Hi,
At least here, the M50D is not available with DHP
As far as I understood from various members, the DHP does make a BIG difference in terms of handling and body roll. So far, my car has been in break-in period, so i haven't really floored it or driven it aggressively, but I do get the feeling that there will be body roll, if i push a little harder. I guess Sport, and Sport + modes should make a difference here, but I have yet to test them after the non-required oil change after the break-in period that I am planning to do this week.