As soon as I have to take my car to HU/AU and every time I think about the procedure at AU, I would like to know how you see it. Most of us are probably rather anxious to avoid the red area of the tachometer, since one imagines that it simply cannot be healthy for the engine to cheer it up so much. However, at AU this is done. So, if it should not be harmful to the engine, then why should it be? extra a warning range on the speed scale?!?