hi Dom,
check on audisrs.com forum/ rs246.com
also try and get it health checked by either Grizz ( Unit 20)
http://www.unit20.org/ ( Cheshire)
he specialises in S snd RS models and he is dam good, I go to him from up here
also if its nearer to you then try MRC Tuning ( Banbury)
http://www.mrctuning.com/ also highly specialised people who know these cars.
Get it checked out first then you should be safe with your purchase... I was out last night and had a wee drive of a 550bhp S4 saloon.... I'll tell ya......... YOU WANT IT LIKE THIS ONE



turbos have been known to cause issues and also possibly cam shafts, I know theyre a hit and miss on the B5 RS4's so advise to get them looked at as well just to be safe.
good luck
