how to make black smoke?

how to make black smoke?
which file make black smoke?

Try this - open the *.cfg file (about the model that you want to edit), scroll down, or search for "smoke" -
In the first result, change the values in the line "Auspuff_alpha" to:
0.95
0
0
0

Right. To see how it have to look later, I have an example

Spoiler:

I only changed the red numbers.

This is not a tutorial, moved to scripting.