Questions about Light Maps

Your critiques are very welcome, there is no nGons, I use a plugin in maya to export to xnormal, if there is any nGons it will fail and won’t export, also triangulated and cleaned on Engine, maybe you are thinking that some components in it are normal maps when they are geometry. I saw once this modifier and seems a vey cool tool( it is the same developer from Unwrella I think), it will be a busy weekend but I will definitely take a look on it.
I have 5 UV sets for this model, this one is from main body, the top shape to ventilation and the front