S4 guys - are you running an X pipe in your exhaust system?
#5
AudiWorld Expert
![Default](https://www.audiworld.com/forums/images/icons/icon1.gif)
<center><img src="http://i25.tinypic.com/ridxeo.jpg"></center><p><ul><li><a href="http://i25.tinypic.com/ridxeo.jpg">http://i25.tinypic.com/ridxeo.jpg</a</li></ul>
#7
![Default](https://www.audiworld.com/forums/images/icons/icon1.gif)
<center><img src="http://img.photobucket.com/albums/v109/uberhare/img_0045.jpg"></center><p>We have true dual all the way back. I'm debating whether or not a X pipe would help on my car.
Trending Topics
#8
![Default](https://www.audiworld.com/forums/images/icons/icon1.gif)
It's used for pulse tuning to pull the exhaust out. But once it goes through the turbo's it will not do anything, as the waves are messed up.