Hey Guys, Basically, Ive only had my RS6 for a few weeks, ive done 800 miles, and in that time, I had it in for a £1500 timing belt and service. The car was going awesome faultless in every way. Now on my sunday afternoon run, the car went into limp mode but no lights illuminated on the dash. So I took it home and parked it up. Monday morning I went down with it to Audi in Elgin who are fantastic. Plugged it in, and up came a faut code, something to do with sporadic charge pressure. After a few hours the head tech diagnosed it as a holed diaphragm in or near one of the turbos. SO !! this apparently cannot be replaced or bought seperatley !! You have to replace the whole turbo which its attached to !! Both turbos are perfect working order !! Anyway, Audi's policy is when you replace one Turbo you must replace both as they are linked and balanced. So, I am now getting 2 brand new turbo's fitted which is 24 hours labour plus all the parts, gaskets, turbo's etc and a complete engine out JOB under my extended warranty ! All for the sake of this rubber diaphragm which has failed premmaturley. The tech thinks that the car being from central london, has sat in traffic most of the last 3 years, and the HEAT from the exhaust manifold has triggered the early failure of this Diaphragm. Crazy, but do get your extended warranty gents please. Otherwise this would have been a £4000 Job.