are there performance parts for the A6 4.2 quattro..I.E chipset, cat back, and cold air intake?
I found this website that may have quite a few options for your vehicle. http://www.goapr.com/Audi/products/index.html
This is one of the only companies trying to make mods for the a6 4.2 http://vastperformance.com/ they are actually making a supercharger for the 4.2.
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