Hi Zackary, thanks for initiating contact. Yes, this performance series muffler will make your car louder than a stock muffler. This muffler features a straight-through design that increases exhaust flow, resulting in a more pronounced, deeper exhaust tone. It’s designed to enhance both performance and sound, providing a moderate increase in loudness with a smooth, refined tone typical of Magnaflow products. To place a purchase, simply click the link provided below. Take advantage of our current discounts and limited supply. Happy shopping! https://www.carparts.com/muffler/magnaflow/m6610436?can=CPGG4850_CSQA_20240919

Hi Shane, I'm glad to assist you. No, it is incompatible. We do not carry a direct-fit vehicle-specific muffler for your 2005 Audi A6 Quattro 3.2L. It is a universal performance type of muffler with a moderate sound output, which may require modification to make it fit.

Hi Alex, If you want to modify the exhaust system, i suggest getting the part #10435. However, if you want to retain the original exhaust system, you need to get a factory type instead.