blackonblack said:
Not true - one screw on each side will change the setting. Very easy to adjust. Drivers side is hard to find, must look down through the slots in the radiator cover - might even need a flashlight, passenger side a little easier to find, about 4-5 inches down from top and behind radiator cover. Go tweak them like in the post above and you will be much happier. Brights are another story.
There is no adjustment for what he's talking about. Yes, like any headlight module, there are provisions for adjusting the aim of the beam.
But, this isn't an aiming problem.
A typical halogen bulb in a typical large concave reflector produces a very gradual and barely noticeable transition from lit area to darkness. It's a focusing issue. The large reflector produces a softer focus and therefore a smoother transition from light to dark.
The projector housing uses a much smaller convex lens (not a reflector) to focus the beam more tightly. The result is more light in critical areas but a very sharp transition from lit to unlit areas in front of the car. This is usually noticed in the vertical light dispersion pattern as a horizontal "line" that bounces up and down in front of your car. The horizontal dispersion pattern doesn't seem to get noticed as much.
You can change the headlight aim but that only changes the height of the "line" bouncing up and down in front of you. It will have no effect on the focus or dispersion pattern.
Take your GTO out on a dark narrow road. Look for the area at the limit of your low-beams. Now drive the same road in a car with typical halogens/reflectors. See the difference? That's what drives some people nuts.
Suggest before anyone pops $800+ for those cool blue-white headlights on any new car, that you drive the car at night on a dark road and see if this bothers you. After owning two HID equipped cars, I wouldn't spend a nickel for this on a new car. HID's are not really better or worse than well designed halogens but they can be annoying to some people.