This is dealer specific. My C6 had an oil seperator fail, and a injector fail. Both of these could be caused by the map, crawley audi were aware of the map but still authorised 1k of work for the oil seperator to be fixed by mondial.
His words to me were, although it has been tuned we cant conclusively confirm that that was the cause of the failure, it could of contributed to it but we cant be sure. These are probably few and far between, but i know Jack Barlcay is also reasonable when it comes to mapped cars.