Ensure patchday4ng is listed in your dlclist.xml (located in update.rpf > common > data ) so the game actually reads your changes.
Here’s a clear, step-by-step guide to updating the folder with patchday4ng and related DLC RPF files for Grand Theft Auto V (PC), typically for modding or adding custom content. update x64 dlcpacks patchday4ng dlcrpf better
Among the many patchday folders (patchday1ng through patchday20ng), has become infamous in the modding community. Initially introduced with the "Next Gen" patch for PS4/Xbox One and later ported to PC, patchday4ng contains critical updates for vehicle metadata, carvariations, and handling files. Ensure patchday4ng is listed in your dlclist