Here’s a complete, detailed write-up for — including what it is, why you’d want it, how to download and install it safely, and compatibility notes. Gran Turismo PSP Save Data Download – Complete Guide 1. What Is Gran Turismo PSP Save Data? Gran Turismo for the PSP (often called Gran Turismo or GT PSP ) was released in 2009. Unlike mainline GT games, it lacks a traditional career mode, focusing instead on time trials, driving challenges, and car collection.