company looks reputable.
Link i found the intake on:
http://www.shopatron.com/produ...534.0
Link to the manufacturs site:
http://www.afefilters.com/

I can't address their Audi product but I put one on Ford turbo diesel and got 60k miles with no problems. That was close to 10 years ago. My opinion is they make a quality product at a fair price.

works great. i just have the panel fliter, its really thin compared to the stock filter, and looks to flow better.
noticeable increase in power: no. not really, but the turbo is more audible