One of the things that annoyed me about my 4motion when I first bought it was the fact that you can never really turn the traction control off. I have however found a way round that and it costs nothing. I hope I'm not repeating somebody else's post as I didn't find much on this topic when I searched some time ago.
If you wanna make your 4motion powerslide or drift, throw the rear out or even donut like the cossie/subaru boys; all you need to is simply take the ABS fuse out. As far as I can gather the ABS sensors are simply wheel speed sensors. I think the ECU relies on information from these sensors to know when too much power is being sent to any given wheel. I suspect doing this prevents the brake force distribution and diff locks working too.
In the Hull, Boothferry Road Kwik Save car park I can make my 4motion rotate at about 1.5 rotations per second (edited.. sorry it was actually a rotation every 1.5 secs) , enough to make you dizzy!
The fusebox is inside the door.. the ABS fuse is labeled.