I have a 2001 A6 Quattro 2.8 that I purchaced Remus mufflers for and had the center resonator removed for strait pipes. I love the sound of this setup, real deep and smooth but it was expensive. I paid roughly 850 for everything, I installed the mufflers. A couple of people with Audis from youtube have said that remus is overpriced crap and that it is way more restrictve than magnaflows for half the price... I hope this isnt true but i would like to hear what you guys think. Im not gonna change it, i ijust want to know the truth. I have pics of the system in my album and vids on youtube under GERMANPOWER90. Please post any thoughts or opinions. Thanks, Matt.