I finally got an HID conversion kit to work. I tried two kits and they both strobed/flickered. After weeks of trying to get them to work with a relay running power off the battery and special capacitors, all it took was VAGCOM programming. If you don't have access to a VAGCOM, try a local shop specializing in Audi or maybe your dealer would do it for you. Once you hookup the VAGCOM, go to Module 09 (Central Electronics), and set Byte 21 to value 12. My old value was 11 for Halogen and 12 is for Xenon (not Bi-Xenon). I had previously found a couple VAGCOM locations for Bi-Xenon lights and tried those, but they didn't help. I also installed the FK angel eyes headlights to get the projector lens for the low beams (don't put HIDs in stock halogen housings). The light pattern is fine. FYI - if you want the angel eyes to work, you'll have to run power to them separately since they are wired to get power from a connection in the harness that isn't used (at least not on my car). I have them hooked up and like them (those who disagree feel free to refrain from comment). If someone comes out with
R8 style lights, I'd definately upgrade to those.
Headlights with everything off, only angel eyes on and HIDs on with angel eyes: