Who has the red RS6 with a GIAC labeled TCU laying on the passenger seat over at Zimbrick Audi of Madison, WI? I left my number on a card on your console. I hope you get out fast and cheap.
Mine is in for an odd temperature gauge situation - runs normal, then shoots to just under max. Sometimes AC blows hot and I think I felt limp mode. Fans blow max during use, then a lower speed for seems like a really long time after power off. Hopefully a temp sender and not a water pump. I didn't check radiator fluid level - too hot.