Nothing specific to the JB1 that I've read. But then there aren't many users of them that I'm aware of (in the scheme of things), and my objection to tuning boxes (particularly in comparison to tunes) is philosophical - I don't like how they work and would rather go with a more integrated solution for peace of mind. YMMV.
There are a few threads on ozAudi with specifics; I can't recall if this is the one that lists the model numbers, but it'll be a start:
S3 8V Golf R 7 Blown Turbos'
Bookmarks