Had ours remapped by Dav Tec earlier this year. A good few thousand miles on and no problems… bear in mind if something goes wrong everyone hears about it.. but positive outcomes don’t get as much airtime.
Real world driving is much better. Motorway slip road acceleration for example and not having to go up and down the gears so frequently in hilly areas. Would I recommend it yes with a supplier that has credibility not any old back street garage. Dav Tec is in the midlands but make a weekend of it, you have a camper after all ;-)