Using this Trainer:
Launch the trainer first, then launch the Game and then Press F1 at the Main Menu.
Listen for "Activated".
Press desired option key
Options in Promo:
F7 Key: Freeze Timer
Options:
F1 Key: Super Acceleration
F2 Key: Super Brakes
F3 Key: Super Jump
F4 Key: Spinout Opponents
F5 Key: Freeze Opponents
F6 Key: Freeze Flashbacks
F7 Key: Freeze Timer
F8: Mega Credits
Notes:
F1 Key: Super Acceleration - hold key down to increase speed. If you get too fast your rider will fly off the bike so use wisely.
F2 Key: Super Brakes - hold key down to help braking.
F3 Key: Super Jump - tap key to jump motorcycle.
F4 Key: Spinout Opponents - tap key to spinout opponents.
F5 Key: Freeze Opponents - toggle on to lock opponents into place.
F6 Key: Freeze Flashbacks - toggle on and when you use flashbacks to go back in time at race you can use them unlimited.
F7 Key: Freeze Timer - toggle on and most races the timer will freeze.
F8: Mega Credits - at the main menu where you see 'QUICK MODES' and you can see your current value at the upper right, toggle this on. Enter a QUICK RACE, and then leave the race and when you come back to the main menu, you will see the CREDITS value has changed. Don't fret if the number is strange or even negative value. Toggle the option off and then go buy something or start another QUICK RACE and leave it and you will see that the CREDITS value is now correctly displayed and much higher.