Hey mine is a 12 year old 1.8T, I've had almost two year. The first thing I done was get I remapped Stage 1 at Jabbasport (located near. Peterborough) honestly it's the best thing I've ever done to a car. Yes as others have said it may highlight any existing problems but definitely get it serviced before you go. And once it's been done make sure you have it serviced regularly.
Depending where you're located i would recommend Jabba, however R-tech are just as good, if no better.