at 8500mcd, they shouldnt be too bright as to blind people or bother people. They put out about 20lm max which is decent enough.
if anyone wanted to copy the Audi's, you'd need upwards of 75 or more lumens. thats when you have to splurge (about 7 bucks a pop) and buy something like these:
Luxeon K2-TFFC LED - Cool White Lambertian, 160 lm @ 1000mA [LXK2-PWC4-0160]
The nice thing about the LED i just posted, is the temperature is good for up to 135 degree's Celsius.
Awesome write up. I was waiting for someone else to do this writeup before I went into baking the headlamps. thats the part im scared of. Cant wait to get my car and do this!