I have drove with my new map for a week now and can only recommend having it done. The fuel economy has stayed the same (if not improving slightly) and the performance gains were impressive for a small N/A engine.
Go to red dot where they will custom map your car while it is on the rolling road. That way you can see (and hear) the results on a graph and have it tailored to your needs and your car. Best way of doing it IMO. Good luck, keep us posted