j meyer, thanks and you're welcome.
Here is version 2 of that file. I needed to put in a seed node and I also had some things competing against each other. The 'narrowness' factor I had in there was pointless and just forced high values elsewhere, so I took it out. I'm not sure why I ended up with it like that.
Here is a render with the default settings in that file:
[attachimg=1]
Note that there is a 'rotate y vector' node that is disabled. I've found that this slows things down some, so leave it disabled unless you really need to rotate the plume such that it is leaning in a direction other than X, -X, Z, or -Z, as by swapping or negating some things, you can get any of those directions without the 'rotate y vector'.