clydeman

And I am wondering what are the best options for a aftermarket air filter setup?

Also what are some good web sites for Audi aftermarket parts?

Thanks

RedBlackYellow

try the "search" on the top of the page...

Thorsholm A4 tdi

... if you're lucky you can get a powerincrease of about 10% with an open-airfilter

ChooChooNongNongHead

I have a lltek Intake in mine ( was on it when i bought the car)
http://www.lltek.com/aik.htm<ul><li><a href="https://www.audiworld.com/ads/a/all/a4.org">CLICK for some good web sites for Audi aftermarket parts.</a></li></ul>

4Rings::G2 boosted::

BTW, I happen to have one almost new if you're interested.

jbaulsir

<ul><li><a href="https://forums.audiworld.com/a4/msgs/1145113.phtml">Some good info</a></li></ul>