Doesn't the B7 have a limited slip diff as well? I admit to not knowing if so. One detraction of the B7 is the weight - to make it produce the power it does, they beefed up a lot of the components, added coolers etc. Likely to the detriment of response. So if Audi didn't do similarly, or less so, that may make the car more fragile in the long term, to the benefit of performance. Nothing to back that up - just a thought.
2015 550i ED - M-Sport, Exec, Heated Seats, Rear Shades - 4/9/15
3/12 ED 7 - thread ID 610350
1/11 ED 6 - thread ID 5767556&postcount=175
4/10 ED 5 - thread ID 453501
5/08 ED 4 - thread ID 290679
3/07 ED 3 - thread ID 201013
3/06 ED 2 - thread ID 136454