I used to have fly eyes on my ride, but after a month I found out that the flyeyes pattern was actually burned to my headlights with my HIDs. Lets just say that, that tint didnt last too long...lol. Also as far as light out put goes, it didnt effect the light output at all. With regular headlight bulbs or HIDs. So idk what KoolG6 is talking about...lol.