I've owned an A4 2.0 FSI Special Edition from new in June 2006. At the first service, I unknowlingly had an ECU upgrade to implement a 'clutch protection system', which has fundamentally changed the driving characteristics. I don't seem to be able to get the modification reversed. They will do it for diesels but not for petrol. Has any one else got any experience of this please? The next step will be to write to Audi, but this is very frustrating. Thanks.