team5150: dye tint is what most cars get. The darkness level is due to the black dye in the tint, and it will fade over time, anywhere from 3 years and older, depending on local condition and if your car is exposed to the sun and how much exposure,..... With ceramic tint, there will be no fade over time, and therefore, the shop will warranty against fading lifetime. Both types of tints will get warranty against peeling and bubbling, which is pretty standard. The dye tint does not have any warranty against fading.
NORTY: I don't know the answer to your question. Do you mean if it'll make your car more invisible to radar detection by cops?
xtream1: this is like a clear plastic covering. see
www.llumar.com