For S4 & S5 owners looking to fine tune the sound even more, we offer AWE Tuning Resonated and Non-Resonated Downpipes. Their Resonated Downpipes (strongly recommended for S-tronic cars) feature resonators larger than the stock units in order to produce a mellow sound volume. Their optional Non-Resonated downpipes are suited for owners seeking a "loud" and aggressive sounding system. Both AWE Tuning Resonated and Non-Resonated Downpipes feature larger than stock tubing diameter. Sound levels from quietest to loudest: A.W.E. Tuning exhaust with A.W.E. Tuning resonated downpipes (highly recommended for all S-tronic S4 & S5) A.W.E. Tuning exhaust with factory downpipes A.W.E. Tuning exhaust with A.W.E. Tuning non-resonated downpipes (recommended only for people who like very loud exhausts) Highlights of the Downpipes: Crafted from mandrel bent 2.5" T304 Stainless Steel Engineered, developed, tested and manufactured in-house None of the components of AWE's B8 downpipes affect or alter any of the emissions devices on the vehicle, and therefore are legal for street use. As with all A.W.E. Tuning exhaust products, each TIG weld is hand finished internally, only butt-welded junctions are used, and flange openings are size matched to their ports, all to produce the smoothest flow possible. It is this intensive attention to detail that sets A.W.E. Tuning exhaust products heads and shoulders above the rest. AWE's exhaust systems are hand built works of art, are award winning, and are what your Audi deserves.
