I'm also interested in a wavetrac LSD for my R...I am also aware of the fact that we also have xds and other artificial systems mimicking a conventional LSD. I understand that xds can be disabled via vcds, and was wondering if anyone has done so and were they also able to turn off other assists that use the brakes. If so, will this be a good idea? To me, when I'm on the track midcorner I don't want to have to think about electronics suddenly putting on braking on any particular wheel and potentially upsetting the car, let alone losing time. Having a mechanical LSD makes those systems redundant so I think turning them off completely would make more sense.