1800km and 5 border crossings each way is a bit longer than I was planning tbh...This.
Courtenay are the leading uk tuners of i30n's they do live mapping not a generic flash map like the forge one. It's unique to the car.
How it impacts the car will basically depend on you IMO. If you beat the car daily expect things to break. If you cruise at normal speeds but only now and then put your foot down / want it to smooth overtaking power delivery etc out then you'll probably never have 1 issue.