I had a 1.8t for a while. It was fun and easy to tune. Sold it about 2 years ago when I got a nice audi A4 2.8 for cheap. I brought a used PES G2 kit about year ago. I have about 60% of the tables from the 2.7t def defined for the my 2.8 ecu. I am actually defining two 2.8 ecu because I found a PES g1 tune ECU dump and would like to see what they changed.
If you actually have a 2.8 defined as much as you say you do then what are you waiting for? Get to it. News flash: no ones going to share calibration changes with you specially with something like this just won't happen. Good luck to you and yours