Look for a folder named 00000002 within the extracted files. This contains the actual DLC-style packages the game needs. Install in Xenia: Open Xenia Canary. Go to File > Install Content .
Over half of the total vehicle count is stored here, including high-performance models and classic cruisers. Forza Motorsport 4 Disc 2 Iso
Once installed, launch Disc 1. The "Install Disc 2" icon in the main menu should disappear, and previously locked Autovista cars will now be accessible. Using Disc 2 on Original Xbox 360 Hardware Look for a folder named 00000002 within the extracted files
For those using original hardware, the process is straightforward but requires a hard drive (HDD). Go to File > Install Content
If you are playing on PC using the Xenia Canary emulator , simply having the Disc 2 ISO file in your folder isn't enough. You must manually "install" the content into the emulator's virtual hard drive.