If you use an unlocker on the Remastered version while online, EA's anti-cheat (EAAC) will detect the license mismatch. You will receive a permanent online ban. You will still play single-player, but you will never see another human driver in Paradise City again.
Let’s address the elephant in the room. dlc unlocker burnout paradise
It is vital to understand which version you are targeting. If you use an unlocker on the Remastered