A few months ago I finally decided to start upgrading my '99.5 A4. I was really upset at the fact that the 2000 model A4's came with the Xenon headlight option.  I started looking into upgrading my factory headlights with the Xenon's.  After talking with the Audi dealership and researching some aftermarket websites I really only found 1 solution that I was comfortable with; I ordered my Xenon conversion kit from LLtek.  This kit was fully "plug and play" and promised true Xenon performance.  After receiving the kit, I had it installed by a local VW/Audi performance shop. This was the first Xenon conversion of that he had done so it took about 3 hours for him to install the bulbs.  The technicians showed me the installation and all were totally impressed with the quality of the product. The shop was so impressed with the kit that they asked me were I got it so that they could start carrying it for their customers! The total bill after installation was about $980.00.  It was a little more then what I
wanted to spend, but it was well worth it!  Because of the headlight lens themselves, you don't really get anymore distance from the light then the factory bulbs.  But the light output is great!  I have a little more visibility then if I had the factory lights on plus the fog lights.  I have
had numerous compliments from friends and family on how well they look. The lights do flicker for a second after they are first turned on.  Other than that, they have worked flawlessly and are a great addition to my A4! If you are looking for a Xenon conversion kit, I highly recommends LLtek's kit!