I had done the following during beta-testing. I had the seats out (for the drags - which should put me around sedan weight). Also, the location was slightly uphill. Unfortunately, it was as I merged onto a highway, so I couldn't do in the reverse direction. All of these, except the 3.99 were done at this same location, using a mile marker as my starting point.
Valid or not, it's some data, to be taken for whatever it's worth.
Also note that as the code versions increase, the fats time decreases :o)

Mark P

Dyno: 469wHP / 451wTQ
93 oct - best 60':1.734 | best 1/4ET:12.239 | best 1/4mph:116.58
100+oct - best 60':1.698 | best 1/4ET:11.762 | best 1/4mph:121.72

ECUx template version 11.16 (3/12/07)
AWD Dynos by State - Race Gas in New England - B5S4 100k+ mile post
Current:
'02 Audi S4 Avant, Imola Yellow, APR Stg3 - imolavant website - 184k miles
'01.5 VW Golf 4dr 1.8T, Satin Silver, GT28R, EPL-tuned - 14.8 | 101mph - 195k miles
Previous:
'00 Audi A4 1.8T, Silver - Quattrobonium website