Blurred Screen:
The Code does work for all modes except championship modus. Enter the following code in the Bonuses-Screen: ethanol

Faster Cars:
The Code does work for all modes except championship modus. Enter the following code in the Bonuses-Screen: gruntsome

Exploding Kerbs:
The Code does work for all modes except championship modus. Enter the following code in the Bonuses-Screen: kerbkrawl

Silver Car:
The Code does work for all modes except championship modus. Enter the following code in the Bonuses-Screen: T2

Enhanced Nitros:
The Code does work for all modes except championship modus. Enter the following code in the Bonuses-Screen: glycerine. The Nitro is activated by pressing the X button.