The earliest S6s and S7s came with cylinder demand from launch
On paper, Audi quoted 414 bhp. In reality, they were making well over this stock (run in and on 99 fuel)
Be interesting to drive a prefacelift (run in and on 99 fuel) back to back with a facelift. Doubt there would be much difference?
B6 S4 Avant gone but never ever forgotten