Actually, the Magnaflow exhaust are amazing, lots of deep noise, and very throaty. I saw the video of an RS4 with A Magnaflow muffler, its very nice.
However, they dont have anything for the Q7
I checked out Remus.at and they have a product for the Q7, and my 2002 S8 has the remus muffler with tips. It sound excellent, so i am guessing the Q7 will sound as good if not better as it is already a loud car.
Funny to think, i almost bought the RS4 instead of the Q7 !!
I contacted Remus, and they sent me a file of the Reums Muffler and tip sound file. If you would like, private message me your email id, and i will mail you the file.
On a 4.2 engine...i'm pretty sure no matter what exhaust you choose will sound amazing. love the sound of the v8! ...but like it was stated before, make sure you get a quality muffler
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2003 Audi 1.8T Quattro 5MT: Forge 007 DV, GIAC Stage 1+, Painted Lowers, Pioneer AVIC D3