Get Ace Difficulty
Beat the game using Championship Mode to get "Ace Difficulty"
or
Put in REDJOCKS for a lap record name.


Cheat mode:
Set a record lap time one any track. Then, enter one of the following names at the 
lap record entry screen.


All tracks:
Enter TEAMPEEP as a lap record name.

All Grand Prix Challenges: 
Enter IMHRACING as a lap record name.