The map uses mod : map editor : http://www.gtainside.com/en/gta5/tools/77507-map-editor-2-1/

Extracts using WinRAR
-Move ( Maps1 ) to : GTA V directory
-Sign In to the game
-Open MAP EDITOR " F7 "
-Then Load by typing " maps1 "

ATTENTION
not in re-upload / reupload