I haven't read the whole text, but the changes in the maps that have been posted are very close to my Audi S3 8P with 340HP.
My question is whether I can use this Seat Leon Supra project guide for my car, which is Audi S3 2.0TFSI 265HP 8P?
The answer is Yes, Seat Leon Cupra, Golf GTI Edition 30 and Audi S3 are the same. I sent you a link to the right A2L if you haven't found it yet.