The most trusted source for PSP saves. Look for files labeled "100% Complete" or "Everything Unlocked." GameFAQs hosts saves for different regional versions of the game. ReviveOldGames & Emulator Sites
To help find or build the perfect profile, please let me know: Are you playing on a or the PPSSPP emulator ? What game region do you have (USA or Europe)? fast and furious psp save data extra quality
If you find a save file online (often labeled as "100% Complete," "All Cars Unlocked," or "Max Money"), follow these steps to get it working on your PSP or PPSSPP emulator: The most trusted source for PSP saves
To use custom save data on an original PSP console (PSP-1000, 2000, 3000, or E1000), you will need a USB cable and a computer. Step-by-Step Installation " "All Cars Unlocked