depending on what other engine mods you've had done, mapping a standard turbo engine is a complete waste of time, and this is same with any car.
If you're turbo tuned, induction kit, full exhaust system complete with up-rated manifold, larger injectors, chipped etc then i recommend a re-map otherwise id just stick to the basics, other wise you'll be paying out for something for nothing. Plus when coming to insure the car you will need to have an engineers certificate to state that the car is still safe, which all costs money, inc. putting your premium up.
If you still want a re-map check the company v-tune out they can give you any further information you may require, along with a complete price for doing the job.