$10,000 - At the title screen, press Up, Down, Left, Right, Z, Left(2) to get $10,000 in career mode.
Beat The Heat points - Press Up, Down, Left, Right, Z, Up(2) for 10 more points in Beat The Heat mode. Repeat this code to increase its effect. Note: The most you can accumulate is 480 points.
Bonus options - The following bonuses can be unlocked during game play by doing well and earning points:
Cheat mode - At the title screen, press Z(2), Up, Down, R(2), Left, Right.
Pit crashing - Go into the pits at the end of pit lane. You can crash into cars, which shows on the tack.
Richard Petty - Win all the challenges to unlock Richard Petty.