If your car is "set" on 97/9 ron when remapped and you run it on 95 would that cause any problem? Mine is set on 95 but I thought I might get it changed if occasionally using 95 wasn't a problem. I know I've read on here that the car "learns" what its burning but surely that means it doesn't need to be set at all:confused:

if your car is meant to run on 98+ fuel then thats when you will get full power from the engine.

running it on 95 will just reduce the performance of the car and IME the fuel consumption