Driver

~B
Employment test, no damage except for turn-overs:
801E 3588 0000

Damage bar at 0:
8009 AC10 0000

Felony bar at 0:
8009 70F8 0000

Press R1 for charger boost:
D009 6AEC 0008
8009 AB84 FFFF

Press L1 + Square for reverse burnout:
D009 6AEC 0084

Press L1 + Square for reverse charger boost:
8009 AB84 000F
D009 6AEC 0084
8009 AB84 000F

Start with ? Checkpoints/Flags Cross Town Checkpoint/Trail Blazer:
D00C 69B4 0000
800C 69B4 00??

Start at Round 3 Dirt Track:
D00C 69C8 0000
800C 69C8 0002

Press L1 + Up to be indestructible:
D009 6AEC 1004
8009 6230 0001

Press R1 + Up to cancel being indestructible:
D009 6AEC 1008
8009 6230 0000

Press L1 + Down for immunity:
D009 6AEC 4004
8009 6234 0001

Press R1 + Down to cancel immunity:
D009 6AEC 4008
8009 6234 0000

Press L1 + Triangle for rear steering:
D009 6AEC 0014
8009 D2CC 0001

Press R1 + Triangle to cancel rear steering:
D009 6AEC 0018
8009 D2CC 0000

Press L1 + Circle for mini-cars:
D009 6AEC 0024
8009 D2D0 0001

Press R1 + Circle to cancel mini-cars:
D009 6AEC 0028
8009 D2D0 0000

Press L1 + X for high suspensions:
D009 6AEC 0044
8009 D2D4 0001

Press R1 + Square to cancel high suspensions:
D009 6AEC 0088
8009 D2D4 0000

Press R1 + Right for an upside-down screen:
D009 6AEC 2008
8009 D2DC 0001

Press R1 + Left to cancel the upside-down screen:
D009 6AEC 8008
8009 D2DC 0000

Only activate periodically to prevent car becoming uncontrollable.
All codes above from thingybob.
No damage:
8008F0AC 0000

Unlimited damage:
80090714 0000

Unlimited time:
800C1A74 FFFF
800C1A76 000E

Drive through walls:
80039456 1000

Slowly drive through cars:
8001BAA2 2400

Level never ends:
800C18C4 0002
800C18E4 0000
800C18E6 0000

Press L1 + L2 + R1 + R2 to flip upright:
D009EF7A F0FF
800905BC 012C