The following are known CWCheat Codes for Gran Turismo: The Real Driving Simulator on Sony Playstation Portable (PSP).

_S UCJS-10100
_G Gran Turismo [JP]
_C0 A Bit Quicker Cars
_L 0x200ABC94 0x3C013FC0
_C0 Black Veyron
_L 0x216454E4 0x000005D2
_C0 Blue GTR
_L 0x216454E4 0x000005D1
_C0 Circle60PS2
_L 0x0080F440 0x0000003F
_C0 Cr 9,900,000,000
_L 0x2080EA00 0x05E69EC0
_C0 Debug Camera
_L 0x201281D8 0x24100002
_L 0x201281E4 0x24050002
_C0 Disable AI
_L 0x2014E464 0x24110003
_L 0x0014E4B4 0x00000000
_C0 Disable Low Race Time
_L 0x200D08DC 0xAC850074
_L 0x200D1144 0xAE020074
_L 0x200D1F64 0xAC820004
_C0 Disable Racing Line
_L 0x004DCB8C 0x00000000
_C0 Enable AI
_L 0x1014E464 0x00008821
_L 0x2014E4B4 0x1440FFED
_C0 Enable Racing Line
_L 0x004DCB8C 0x00000001
_C0 Even Slower Cars
_L 0x200ABC94 0x3C013F00
_C0 Frozen Timer
_L 0x200E1EA0 0x24050000
_C0 get Cr 9,900,000,000
_L 0x2081F940 0x05E69EC0
_C0 GymkanaPS2 (Time Trial)
_L 0x0080F440 0x00000087
_C0 Hyper Speed Cars
_L 0x200ABC94 0x3C01408
_C0 Insane Speed Cars
_L 0x200ABC94 0x3C014100
_C0 KACHI AdhocRace 999999
_L 0x2081F94C 0x000F423F
_C0 Kachi SingleRace 999999
_L 0x2081F948 0x000F423F
_C0 Low Race Time
_L 0x200D08DC 0xAC800074
_L 0x200D1144 0xAE000074
_L 0x200D1F64 0xAC800074
_C0 Max Credits
_L 0x2080EA00 0x05E69EC0
_C0 Much Quicker Cars
_L 0x200ABC94 0x3C014000
_C0 Normal Speed Cars
_L 0x200ABC94 0x3C013F80
_C0 Normal Timer
_L 0x200E1EA0 0x02202821
_C0 Orange Lambo
_L 0x216454E4 0x000005CF
_C0 Quicker Cars
_L 0x200ABC94 0x3C013FA0
_C0 Red SLR
_L 0x216454E4 0x000005E1
_C0 Remove Credit Limit
_L 0x2081F950 0xFFFFFFFF
_C0 Replay Camera
_L 0x201281D8 0x24100001
_L 0x201281E4 0x24050001
_C0 Reset Camera (Do not use on SmnorthPS2)
_L 0x201281D8 0x00A08021
_L 0x201281E4 0x10A00016
_L 0x20127510 0x8E020004
_L 0x20127518 0xAE221FAC
_L 0x004DD454 0x00000000
_L 0x004DD45C 0x0000001A
_C0 Slow Timer
_L 0x200E1EA0 0x24050019
_C0 Slower Cars
_L 0x200ABC94 0x3C013F40
_C0 SmnorthPS2 (Time Trial)
_L 0x0080F440 0x00000030
_L 0x004DD454 0x00000001
_L 0x004DD45C 0x00000001
_C0 Ultra Slow Timer
_L 0x200E1EA0 0x24050001
_C0 White ZR1
_L 0x216454E4 0x000005D0
_C0 Yellow Enzo
_L 0x216454E4 0x000005CE
_C0 Yellow GT by Citroen
_L 0x216454E4 0x000005D6