This is a discussion on 2013 vs 2014 HID setup within the Exterior & Appearance forums, part of the Tech & Modifying & General Repairs category; Originally Posted by kite991 Just got back from the Subaru Dealer down in SJ, and talked to the salesman about ...
I know this is an old thread, but correct me if i'm wrong:
From what i know about lighting the HIDS are just the bulbs and the ballasts. Also that all wrx's/sti's have the same projectors/housing which allow the hids. so as far as the cutoff points and such should be the same as the STI's? no?
The lenses are NOT the same, although the metal projector houses might be similar. Cutoff is NOT the only factor here. Most automotive projectors are designed to have a sharp cutoff point no matter where the light point source is located behind the lens. See this thread here for a more in-depth discussion of this: LED projector headlight experiment
The problem lies in the distributed light BELOW the cutoff. The halogen lenses are designed to evenly distribute the light from a halogen bulb, and the same is true for HID lenses.
You need to properly retrofit the ENTIRE projector assembly for HID bulbs, not just the ballasts and bulbs.