Hiya, not a GTI but a Ryder owner in Cardiff.
Loads of knowledgeable peeps on these boards, I pick up tips from the projects section aswell as the MK2 section.
I also like to read Rubjonny's answers to questions (I think he's the oracle of MK2's or something)

These people are the dogs nads on golfs
http://www.ngmotors.co.uk/ for getting your car running perfect, they're actually pleasant people to talk to aswell, and wont try and stretch a job out to get work. (they're way too busy, because they offer a good prices on their work)