Whenever im online in the XRG all the other peoples cars have the skin a i made that isnt even public and im not even using it, I have deleted it from the skins folder but they still have it. Also their engine is the same as mine and NO im not using the original one. PLEASE HELP ME

To get rid of the skin, you've got to delete the skin from the "skins_dds" folder. The skin will have the same name; it'll have .dds instead of .jpg.

If you've changed the engine sound using shift+a for a specific car (i.e. XRG),

E: LFS will use that sound for all XRGs. You cant have your XRG using a specific sound and another player's XRG having another sound at the same time.

Regarding the skin - you've probably saved your skin as XRG_DEFAULT at some point. That skin loads whenever someone (you or anyone else) isn't using a specific skin.

Quote from Degats :

Regarding the skin - you've probably saved your skin as XRG_DEFAULT at some point. That skin loads whenever someone (you or anyone else) isn't using a specific skin.

Or if they are using a custom skin not uploaded on LFSWorld.

Quote from Silverracer :

To get rid of the skin, you've got to delete the skin from the "skins_dds" folder. The skin will have the same name; it'll have .dds instead of .jpg.

If you've changed the engine sound using shift+a for a specific car (i.e. XRG), LFS will use that sound for all XRGs. You cant have your XRG using a specific sound and another player's XRG having another sound at the same time.

and you can have a diff engine sound they everyone else... u just have to go through each racer and change their engine sound..

example
Racer1 (you) - (custom engine sound)
racer2 (friend)- you would click on his name in the connections list hit Shift + a then select a different engine sound for him and then shift a again to close the menu.. and boom 2 drivers with 2 different engine sounds

Ah, yes. Thanks.