is a nagging noise coming from the right rear shock. Performance is not compromised, just my sanity is. I am not the only one with this issue, and STaSIS say they have done oodles of testing and can't find the cause nor the cure. The noise is excessive at speeds below 50 mph, then either dissipates or gets muted out by road noise etc. At the time of purchade it was suggested by STaSIS that I go with 650 lb springs all around, and I am very pleased with the set-up but my purposes are strictly agressive street, not track. It is my daily driver and I don't feel that it is too stiff/soft. I've read on this board and RS6.com positive comments about KW's, and some negative about PSS9's.
Why did I change the suspension? DRC failure yielding total incompetance of my dealer, and total lack of interest from AoA.

badges

2003 RS6 Mugello w/STaSIS Motorsport Suspension
1979 Porsche 911SC Targa
past:
2001 A6 4.2
1998 A6 2.8 Q
1996 A4 2.8 Q
1984 Ferrari Mondial
1983 Rabbit GTI - (Stage II turbo - what a pisser of a car!)