After dropping my car off at Arnold Clarke vauxhall last night to find the diagnosis of the ECS problem. They call me today to tell me they can't find the problem so they are going have to take the car to Audi!! (£££££). The car's going in tomorrow and they will call me when Audi find out. For a top dealer not to know that worries me that it is a big problem. Before i took the car in I listened to the exhaust and it sounded like it wasn't quite staying idle in neutral, it would drop slightly then pick up. Any suggestions? Can anyone reassure me that it still could be something minimal possibly or should I expect the worst news tomorrow?