Oh now this is the official thread for message abuse on PSN? Very good. I have lost count of people who accused me of cheating, then, after explaining to them that there are no cheats in this game, accused me of using pilot assist. Most of the time I stayed friendly, telling them to go 1on1 against me on a track of their choice, me picking the same craft they're using. That usually got rid of the problem as they would realise the wrong in their accusations by the time I got a 5+ seconds lead on them - then they mostly apologized and sent a friend request (which of course I denied
).
I know, it's hard to stay friendly with lots of people throwing words at you, but try to convince them to test you in a 1on1, and they'll see for themselves.