Looking to upgrade your 08-12 S5 4.2L to a much less restrictive and deeper-sounding exhaust system? AWE tuning has been producing well-tuned and engineered exhaust systems to competitively dominate the market.

AWE’s tuning touring edition cat-back exhaust system represents the most comprehensive exhaust development project in our company's history. AWE has 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.

Handmade in-house, these systems command respect while remaining sophisticated, refined, and powerful, all at once. As exhaust gasses exit the 3.0T engine and flow into an AWE Tuning 180 Technology™ equipped resonator, they pass through strategically located ports, and into reflection chambers. Sound waves, carried by these exhaust gasses, bounce off the walls of the reflection chambers. By controlling the size and location of the ports and the chambers, we also control when the sound waves exit the chambers.

The specific timing of when the reflected sound waves rejoin the main exhaust flow creates a one-hundred-and-eighty-degree out-of-phase sound wave that cancels out problematic frequencies.

Options:

• AWE Tuning Touring B8 S5 Catback Chrome Tip 3015-43028
• AWE Tuning Touring B8 S5 Catback Diamond Black Tip 3015-42026

S5 4.2L Touring Edition Exhaust System

The more civilized member of the S5 exhaust family is the S5 4.2L Touring Edition Exhaust. In addition to the central muffler from the Track Exhaust, the Touring Edition system features an x-pipe for enhanced exhaust scavenging and also features AWE Tuning 180 Technology™.

Sound Perfection: AWE Tuning 180 Technology™

As exhaust gases exit the 4.2L engine and flow into an AWE Tuning 180 Technology™ equipped resonator, they pass through strategically located ports, and into reflection chambers. Sound waves, carried by these exhaust gasses, bounce off the walls of the reflection chambers. By controlling the size and location of the ports and the chambers, we also control when the sound waves exit the chambers.  The specific timing of when the reflected sound waves re-join the main exhaust flow creates a one-hundred-and-eighty-degree out-of-phase sound wave that cancels out problematic frequencies.

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.

Overview

Highlights

Hand-crafted, every detail of these exhausts was labored over to ensure maximum performance and longevity:

• + 18hp, +12tq at the crank
• Available with Chrome 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 Exhaust Warranty

Tips

Both versions of our S5 4.2L Exhaust System come with 90mm (3.5 inch) Slash Cut Tips, available in standard Chrome Silver or 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.

Exhaust Sound