speaking to Rob at SCC he is very impressed with the new REVO maps they deal with for VAG group cars, unsure if the RS6 is catered for but a quick google will resolved that

you bought a car without seeing it or driving it....thats an impulse buy

from fast audis i have been in and driven in the past (RS2,S4,S8 +more) i have always been impressed by the level of grip the quattro system and the smooth delivery of the power....but exciting.....no!