Go to gta5/mods/update/x64/dlcpacks and put in the beyondbatmobile folder.

Now go to gta5/mods/update/update.rpf/common/data
and edit the dlclist.xml and paste this <Item>dlcpacks:/beyondbatmobile/</Item>

Use a trainer that allows you to spawn addon vehicles.

Vehicles config installation

Add both files to "Vehicles config" folder.

Credit to Bura from JulioNIB server for the batmobile config image!
