Enter the following passwords to get these cheats:

MAXCHEAT / Unlock Everything
AIRHORNS / 80's Air Horn
BESTLAPS / Designer's High Scores
EEFNIEBA / All Tracks on Easy
EEFPHMBC / All Tracks on Hard
HEMPCMDD / All Tracks on Expert
HHMPNEED / All Expert Tracks, Bonus Car,
Mega Time Trial, Mirror
Mode and All Deathmatch Modes
EADNCMAH / All Tracks and Mirror Tracks on Hard

Beat all leagues in first place.

Beat all tracks in any league in first place.