I have created a fairly cool thruster effect using particles but I still thing this one looks better any one recmend me a way of createing somthing like this. What I am looking at is the blue thruster effect comming of the back of the ship. 
I have accomplished the glowing in the engion with the use of a substance.
Looks like a cylindrical or cone shaped mesh with a transparent material.
Make a mesh that has that shape, and some textures that you map around it. You can animate the texture with a shader to give it a little more dynamic effect, or you could just scroll/animate the texture coordinates.
Use Xffect Package of unity3D