Help with the Halo matirial (trying to make an engine effect

i am trying to make and engine effect and this is how it’s supposed to look: http://imageshack.us/f/651/ex1b.png/
but this is how it ends up looking when i light the scene:
http://imageshack.us/f/715/ex2j.png/

i am using the halo effect to make it can anyone help me?

Either

  1. reduce transparency of halo and increase the add effect
  2. use the compositor

thanks man, worked perfectly XD