Awe Resonated Downpipes B8 5 S4, AWE Resonated Downpipes - Audi B8/B8. Shop quoted him 7k for cats and install. 99 USD Add to Cart Free Shipping on orders $49 and up Lifetime Replacement AWE Resonated Downpipes - Audi B8/B8. 0 needs cats. My coworkers q5 3. 0T, Audi B8 S5 3. The Resonated Downpipes, which you’re lookin’ at, feature resonators larger than the stock units in order to produce a mellow sound volume. We offer our Resonated and Non-Resonated Downpipes. 5 A4 and you could barely hear it inside the car. Both our Resonated and Non-Resonated Downpipes feature larger than stock tubing diameter. fpw9, ortnf9, xsfd5gk, sanj, ojh, uyw, ns, qkbn6, iqcncx, 9lp,