Awesome GTi are really good if you want an APR map, and they've got a RR there! Or if you want to go down the route of REVO, then there's loads of dealers about! I did mine at demon tweeks..
They have been going for years. They use to be opposite the boltic before the boltic got turned into an arts centre and it was regenerated round there. Ive only ever bought stuff from them over the years never had any work done. I do know a few people who have had full wheel alignment done there and they are happy with the service but thats it. So cannot really help. Try posting this in the general section more Newcastle foke maybe able to help you out from the other marks.
I've had exhausts and other work on past cars done there and they are very good. Not sure about he remap as never used them before, but hey are helpful.