R: Racing Evolution Cheats

Choose one of the best cars in the game like the Audi.  Then put your
opponents as the Gt2 class. You can then easily win.  (in races that you
dont buy cars)

After you defeat Nelly in a drag race in event challenge mode, you will get his Mazda RX-7. Keep repeating that race, and when you win you will get over 100,000+ RP every time. Repeat this as many times as desired.