In the "Press Enter" screen type in the following cheats.only works in single player mode
regmebaby: 20000 start money in career mode
opendoors: Unlock districts
ordermybaby: Unlock all cars
gimmevisual1: Unlock all visual upgrades Level 1
gimmevisual2: Unlock all visual upgrades Level 2
needperformance1: Unlock all performance parts Level 1
needperformance2: Unlock all performance parts Level 2
goforoldspice: Unlock Old Spice vinyl
needmybestbuy: Unlock Best Buy vinyl
gotmycingular: Unlock Cingular Sponsor vinyl
gottahavebk: Unlock Burger King vinyl
gottaedge: Unlock Edge Sponsor vinyl
davidchoeart: vinyl
wannacapone: vinyl
gimmechingy: vinyl
yodogg: Snoop Dogg Special
tunejapantuning: vinyl
Hoods: Get 4 wins on outrun level 2.
Engine, transmission or tires: Get 3 wins on outrun level 3.
Rims: Get 6 wins on outrun level 3.
Spoilers: Get 4 wins on outrun level 4.
Vinyls: Get 6 wins on outrun level 4.
ECU, turbo or brakes: Get 9 wins on outrun level 4.
NOS, weight or suspension: Get 6 wins on outrun level 5.
Wide body kits: Get 11 wins on outrun level 5.
Auto Motor: Get 20 wins on level 5.
AutoMaxx: Get 16 wins on level 4.
Car Audio and Electronics: Get 6 wins on level 3.
Chrome und Flamen: Get 27 wins on level 4.
Elaborare: Get 3 wins on level 4.
GTI: Get 11 wins on level 3.
GTI : Get 16 wins on level 5.
Hot 4's: Get 18 wins on level 3.
Import Tuner: Get 4 wins on level 5.
Maxi Tuning: Get 7 wins on level 4.
Power: Get 32 wins on level 5.
Spoiler: Get 11 wins on level 4.
Sports Compact Car: Get 8 wins on level 2.
Street Car: Get 2 wins on level 3.
Street Car: Get 9 wins on level 5.
Street Tuner: Get 34 wins on level 5.
Stuff: Get 20 wins on level 4.
Super Street: Get 28 wins on level 5.
Swiss Tuner: Get 25 wins on level 5.
Turbo: Get 4 wins on level 2.
Apply vinyls to your car but leave at least one empty vinyl slot. Exit the shop and return. Select the empty vinyl slot if it asks you to choose vinyl color just press esc and select the empty slot again. When you select a unique vinyl the other vinyls will disappear but they will come back after you pay for your setup. You can layer the vinyls the same as usual.