Whether you??re looking for the grabbing roar of our Track Edition or the more sophisticated tone of our Touring Edition, this family of Exhausts affords a solution for every discerning S5 owner. S5 4.2L Track Edition Exhaust System The S5 Track Edition Exhaust is known for its powerful, raw V8 rumble. Still for the daily driver, this ??noticeable?? system lets them know you??re coming. And for S5 owners seeking an even more aggressive sound, we offer our Non-Resonated Downpipes. Our Non-Resonated Downpipes eliminate an additional set of resonators from the car, to produce a louder and deeper tone to the exhaust note. Tiptronic? Go with the Touring Edition. S5 4.2L Touring Edition Exhaust System The more civilized member of the family is the S5 4.2L Touring Edition Exhaust. In addition to the central muffler from the Track Exhaust, our Touring Edition system features an x-pipe for enhanced exhaust scavenging and specially designed Helmholtz Resonators to produce the tone you want. ??The addition of the Touring Edition Exhaust helps to build out our S5 4.2L line-up.?? comments John Voss, one of AWE Tuning??s Audi Specialists, ??The Track Edition delivers that classic V8, sound, while the Touring Version delivers a higher pitched, more exotic wail.?? A February install remarked, ??As I was leaving the shop, sure enough, I heard no drone thru the rpm range. 750-2500 rpm the sound has a smooth velvety tone... great for cruising. Once above 2500 rpm, this thing screams, and sounds like a pure european exotic.?? For S5 owners looking to fine tune the sound even more, we offer our Resonated Downpipes. Our Resonated Downpipes feature resonators larger than the stock units, along with larger diameter tubing in order to produce a mellow sound volume. Highlights of both systems Hand-crafted, every detail of these exhausts was labored over to ensure maximum performance and longevity: + 18hp, +12tq at the crank Available with Polished Silver or Diamond Black adjustable tips Increased pipe diameter to 2.5?? to better let the engine exhale Engineered, developed, tested and manufactured in-house Stainless steel center muffler with composite acoustical and stainless steel packing materials Strategic elimination of mufflers to release tone Thick .065" wall T-304 stainless steel tubing High quality stainless steel band clamps Lifetime Warranty Tips Both versions of our S5 4.2L Exhaust System come with 90mm (3.5 inch) Slash Cut Tips, available in standard Polished Silver or our noted Diamond Black finishes. The tips sport engraved AWE Tuning logos and are double walled to ensure a mirror polish, even under hard usage. Each tip is individually adjustable, so stagger and depth into bumper can be set according to personal taste. Our exhaust systems are hand built, are award winning works of art, and are what your Audi deserves.