Kerbal Space Program

In the config file for a rocket engine and jet engine, you can set the emission and speed values of the particle effect, just as you can in the Unity Editor.

However, you can't set the size of the effect, even though the value is right next to emission and speed.

EFFECTS
{
    running_closed
    {
        PREFAB_PARTICLE
        {
        size = 0.0 0.0
        size = 0.01 0.1
        size = 1.0 0.67

        scale = 0.0 0.0
        scale = 0.01 0.1
        scale = 1.0 0.67
        }
    }
}

If there's a way to rescale the plume but it's undocumented, please document it on the Wikipedia: http://wiki.kerbalspaceprogram.com/wiki/CFG_File_Documentation#FX_definitions

And no excuses about rescaling particle effects looks bad. I run the game on less than quarter texture quality and I don't complain. A mod is a mod.