Enter the following codes at the Press Enter screen before loading a profile:

regmebaby               $1,000 in career mode, RX-8 and Skyline in quick race mode
ordermebaby             $20,000 in career mode
regmybank               $2,000 in career mode
needperformance2        Unlcoks Performance Upgrades Tier 2
gimmevisual2            Unlcoks Visual Upgrades Tier 2
needmybestbuy           Unlocks Best Buy Sponsor Vinyl *works in career*
gottahavebk             Unlocks Burger King Sponsor Vinyl *works in career*
gotmycingular           Unlocks Cingular Sponsor Vinyl * works in career*
gottaedge               Unlocks Edge Sponsor Vinyl *works in career*
goforoldspice           Unlocks Old Spice Sponsor Vinyl *works in career*
needperformance1        Unlocks Performance Upgrades Tier 1
gimmevisual1            Unlocks Visual Upgrades Tier 1
gimmechingy             Chingy sponsor