(GTA V Folder)\update\x64\dlcpacks\mpstunt\dlc.rpf\common\data\levels\gta5

If some cars from this DLC doesn't have its parachute working, replace the vehicles.meta in this location: (GTA V Folder)\update\update.rpf\dlc_patch\mpstunt\common\data\levels\gta5

If game keeps updating and restores vehicles.meta to original state, turn off internet