I have an x-reg facelift S3. I want to know how much my HIDs have faded over the years.
they have never been replaced and I'm just wondering how much they may have diminished over the years and whether or not it's worth buying new bulbs?
If I do replace them do I need new ballasts or just new bulbs? (ive never changed HIDs before...)
And what luminicty do I buy (to match current std spec?)