I want to remap my Fabia VRs. Who can i go to to have it done, and what power outputs can i get?

Welcome to Briskoda :wavey:

Use the search function for re-map as this subject has been covered in some depth here.

You have a number of options:

Generic map: from 20-40bhp gains. "Off the shelf" re-map

Custom map: 40bhp upwards and will take into account your preferences and other modifications that you may have and will likely include RR time.

HTH

20-30bhp increase over stock.

Revo Is The Way Forward

Everyone has thier own favourite company for remap's

Best do a search along the following :-

AMD

Revo

Awesome

Jabba

There are more but these are just a few of what has been used.