Just looked up in the wiki should be like that: fx_gasBurst_white = x, y ,z, angx, angy, angz, activate, deactivate So to change 10m you should add 10 to x or z. Old (wrong): The values in the config are just for defining the color and length. The placement of the flames is defined by an empty object that is places in Unity and exported with the object. So you will need to edit the mesh in Unity editor and export, but as this is a stock part you aren't able to edit it (correct my if I am wrong, but don't know any way to import them into unity, to re-export them).