Is there anyway to add dust behind the car on gravel surfaces?

Hi, I'm making a rally car mod, however I've found that most gravel surfaces in this game does not blast off dust when you are not sliding. The particles only blow when you are at about the slidingcoef level, when driving straight there's no dust trail at all, looks way too clean. However I've found that in the Johnson Valley, while it's ground model is dirt, you are blasting very satisfying dust trail when you are driving. In East Coast USA and like Italy, where you have roads' ground model dirt and gravel, they do not blow dust trail at all. Where can I find this kind of settings? I haven't gone too deep in the world editor, I believe it's something you can do in the world editor, or not?

 

There is a way to create and add your own custom particle effects to terrain types, but I'm buggered if I remember how. Take a look at the files in the old mammoth road map (I think that's the name). It had snow, and they had added snow as a particle effect.

My recollection is that they modified the materials.json file in terrain, but it could easily be something completely different. I'm 90% sure it wasn't in the world editor, but was in the files and a .json somewhere.

The only thing I would add is that the devs very rarely use that sort of trickery in their maps, and if they have a terrain that kicks up dirt when you're travelling straight, this is probably one of the vanilla groundmodels (read here for more info: https://wiki.beamng.com/Groundmodel_on_static_objects).

Have a look at the differen't dirt type options, (crumbling, etc.).
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Scrap all that, I just had a look and I don't think it is the groundmodel properties.
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Even worse, I just had a look and Mammoth Valley isn't even the map I meant. I'm not sure I'm being all that helpful...

 

Yeah, I had a look that both East Coast USA and Johnson Valley's groundmodels are dirt, but Johnson Valley's dirt can kick up dust but not for East Coast USA. Must be something else.

 

Are the terrains both just 'dirt'? Curious. I'll take a look.
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OK, JV uses a lot of 'Dirt_loose_dusty'.

ECUSA just uses 'Dirt'

Here, I'm not talking about the terrain name, but the groundmodel.

This can be changed in the terrain material library:

I'd imagine you have to either save and reload the map, or at least restart lua (cntrl + L) to get it to kick in.