the cut off isn't the only difference between hid and halogen projectors... yes, on some, putting an hid bulb in there really screws things up, but generally, the light output with an hid projector is just much much better... they're designed for the light output of an hid bulb. You may not get a better cut off(well, you might, depending on what projector you use), but you'll get a lot more light on the road, and a much much wider beam.

It also depends on what projector you're using, as some of the H7 projectors(mainly the valeo units) use pretty much the same projector for both their halogen and hid units with just a different base. The valeos in this case are the exception, not the rule.


The difference between left and right hand drive projectors is which way the step goes. With a left hand drive vehicle, the light will step up to the right, with a right hand drive vehicle, it'll step up to the left. This allows you to not blind oncoming traffic, but sep up to illuminate the sidewalk and such.

For demonstration purposes, here is the output of an LHD projector and a RHD projector


disregard the fact that one step is bigger than the other... that's the difference between an ece cut off and a dot cut off... point is to show the top one is from a RHD projector, and the bottom is from a LHD projector