As six of you have PM'd me to ask who the mapper was, I may as well publish it. It was Angel.
In defence, I found them very efficient and courteous, and the refund and standard map was no charge/no argument - albeit they didn't test the car after removing the map. (I wish I'd insisted..... )However, it left me with a DPF issue (solved) and what looks like an EGR issue. I will know more after it has been to the garage.
Many posters on here have been happy with Angel's work, so this may be a one off. Earlier in my posts, I mentioned that I'd had very good recommendations from other non-Alfa tuners for AlfaTune and Novitec, so I wouldn't want my post to read as a 'remapping is bad' post.