I have a 97 turbo auto. Sometimes when I do a burn out, only one tire spins. I heard that this could be caused by a bad diff. I also heard that some of the 97 turbo autos didn't come with limited slip but I tought this is standard on all 97 turbos.
If your MKIV is twin turbo, your diff is definitely torsen style limited slip. I recommend draining the fluid and replacing it with either Mobile One synthetic gear oil or RedLine shockproof. This should help.
yea, I think I would have to agree with toysupra 1. I would eat my dinner right off of your engine bay. (Actually, I could warm it up on the valve cover and then eat it off of the battery.) Anyways...that's my way of saying nice setup.