AWE Tuning - Audi B8 S4 Resonated Downpipes

Our exhausts have earned praise from owners and the press alike, due to their unique "Jekyll and Hyde" personality. We spent considerable time and effort during development to achieve remarkable civility when idling and at part throttle cruising, while also producing a war-cry wail when full throttle is applied. Our exhausts are like bespoke suits: each is hand made utilizing only the finest casing and packing materials, and they command respect without calling unwanted attention to themselves. Sophisticated, refined, and powerful, all at once.

Sound levels from quietest to loudest:

• AWE Tuning exhaust with AWE Tuning resonated downpipes (highly recommended for all S-tronic S4s)
• AWE Tuning exhaust with factory downpipes
• AWE Tuning exhaust with AWE Tuning non-resonated downpipes (recommended only for people who like very loud exhausts)

Highlights of this system:

• Crafted from mandrel bent 2.5" T304 Stainless Steel
• +8hp, 9tq at the crank on stock software
• Frequency tuned Helmholtz resonators to eliminate low rpm drone
• Optional Downpipes for fine tuning sound volume
• Available with Diamond Black Oval tips, or 90mm Polished Silver or Diamond Black adjustable slash cut tips
• X-Pipe for enhanced cylinder scavenging and exhaust tone
• Engineered, developed, tested and manufactured in-house

Our B8 S4 Exhaust system represents the most difficult, yet most rewarding, exhaust development project in our company history.

Thankfully, we did all initial development work on an S-tronic car, as the gearing and slightly extra engine load with this trans causes a very bad low rpm drone once uncorked. You can even slightly hear this drone with the stock system in place. To combat this issue, we spent over 170 hours massaging the sound quality and developing special Helmholtz noise cancellation resonators tuned to eliminate any and all drone in the 1000-2200 rpm range. In its final configuration this system is fitted with straight through mufflers and an x-pipe for increased exhaust scavenging flow.

Our B8 S4 exhaust system is capped off with attractive 90mm slash cut tips featuring the AWE Tuning logo. These tips are double walled to ensure a mirror finish even under hard usage. Choose between the classic Polished Silver slash cut tips, our luscious Diamond Black slash cut tips, or our distinctive Diamond Black oval shaped tips to help your car stand out from the pack. Each tip is individually adjustable, so stagger and depth into bumper can be set according to personal taste. Alternatively, we also offer an oval shaped tip option in Diamond Black, desgned to blend perfectly with the bumper profile.

For S4 owners looking to fine tune the sound even more, we offer our Resonated and Non-Resonated Downpipes. Our Resonated Downpipes (strongly recommended for S-tronic cars) feature resonators larger than the stock units in order to produce a mellow sound volume. Our optional Non-Resonated downpipes are suited for owners seeking a "loud" and aggressive sounding system. Both our Resonated and Non-Resonated Downpipes feature larger than stock tubing diameter.

None of the components of our B8 S4 exhaust system affect or alter any of the emissions devices on the vehicle, and therefore are legal for street use.

As with all AWE Tuning exhaust products, each TIG weld is hand finished internally, 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 AWE Tuning exhaust products heads and shoulders above the rest.

Our exhaust systems are hand built works of art, are award winning, and are what your Audi deserves.