Audi a5 1.4tfsi DTUK



hello all, after alot of research i have come down to the point that best possible tuning box is dtuk for a5 1.4tfsi but some questions arises. My car is brandnew with just 600km so waranty is valid for next two years which i dont want to risk and void, been reading that even tuning boxes are tracable is it true? Another thing is with DTUK is there something to worry about can it go wrong with the cars electronics? I read somewhere that people had snappy shifting issue which did damage a part of their dsg gear box?last question has anyone tried this on audi a4 1.4tfsi or a5 1.4tfsi?