I'd want them to do a little more than that. I'd want them to produce a technical eport stating that the map had absolutely nothing to do with issues with the DSG.
It's in their best interests in my view as people will become wary of using their maps is there's a chance their maps kill your cars....
Jim
VW will use any excuse to get out of a warranty claim if you have gone outside of the terms of the warranty, which by remapping the car the owner has.
REVO producing a report isn't going to prove anything more to VW, as VW are the manufacturers of the DSG box so they set the rules of the it's operation, so by the owner choosing to increase the power of the car there is VW's get out clause regardless of this being the cause of the failure.
I believe the box in Chunks car would have failed either way with or without the map. The type of issue I understand he has is most likely down to a mechatronics failure, which is a part generally unaffected by the power output of the engine. This to me could only be damaged if the oil in the box got too hot, which increasing the power 'could' cause.