You do not need to search the map for hidden barns; every rare, legendary vehicle is already fully restored and sitting in your garage. 100% Map and Collectibles
Using a 100% save file might cause issues if you don't own the specific DLCs (car packs) that the original creator of the save file had.
Always back up your original save data to a separate USB or Cloud storage before replacing files. Forza Horizon 2 Xbox 360 Save Game 100 Complete
A: No. Achievements are triggered by specific actions. Loading a save bypasses those triggers. You would need to delete the save and replay the final race.
Move the save file back from the USB to your console's internal Hard Drive (optional, but recommended for faster loading). You do not need to search the map
Every highway, dirt track, and hidden alleyway across the Mediterranean landscape is fully mapped out.
A 100% complete save file is a pre-packaged game progress data file created by another player who has finished every aspect of the game. Loading this file onto your Xbox 360 profile unlocks several immediate benefits: You would need to delete the save and replay the final race
The 360 port lacks the dynamic rain and wet-weather handling mechanics of the next-gen version.