Blender - Cycles - Tornado

I am using 2.71.

I am trying to do a tornado.

I have followed the blender internal version, however, when I try processing it into cycles it just goes weird. And yes I’ve watched the smoke 2.71 tutorials for cycles.

Does anyone know how to do a twister in cycles or no? tips thanks

Sorry, but you’re not saying anything at all.
What goes wierd?
What do you want to achieve?
Can you post images of the problem?
Explain clearly what you’re trying to do
Upload the .blend so we can help better.