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Installing the AWE Tuning B6 S4 Cat Back Exhaust

 2004-05 B6 S4 Exhaust

    Like a Tailored Suit

304 Stainless Construction
Double Walled Laser Etched Tips
H-pipe for balance and tone
Choice of loud or quiet versions
Lifetime Warranty
b6s4exh
Year(s) Body Drivetrain Transmission Part# Price
2004 - 2005 ALL Quattro ALL B6 V8/V6 Cat Back NON-RESONATED Track - Silver Tip $1,149.00
2004 - 2005 ALL Quattro ALL B6 V8/V6 Cat Back RESONATED Touring - Silver Tips $1,249.00
2004 - 2005 ALL Quattro ALL B6 V8/V6 Cat Back NON-RESONATED Track - Black Tips $1,299.00
2004 - 2005 ALL Quattro ALL B6 V8/V6 Cat Back RESONATED Touring - Black Tips $1,399.00
2004 - 2005 ALL Quattro ALL AWE Optional Diamond Black Tip Finish $149.95
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Dyno verified gain of 14.2 HP and 14.8 FTLBS TORQUE corrected to the crank.

Developed in-house on our AWD dynamometer, with a critical ear lent to sound volume and tone character, we guarantee the most powerful exhaust system yet for this great car. Featuring our distinctive double walled taper tips in a 3.5" (90mm) diameter, this system looks fantastic on the car.

Our exhausts have earned praise from owners and the press alike, due to their unique "Jekyll and Hyde" personality. We spend 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.

We have two versions of this exhaust to appeal to the various tastes in sound volume out there. Like it quiet, barely louder than stock? No problem, choose our resonated version. Like to announce your V8 presence with a shout during acceleration? Got you covered with our non-resonated version.

If you like a loud, raucous V8 sound, order the NON-RESONATED Track version of our exhaust.

If you like the powerful sound of a V8, but need a civil volume, order the RESONATED Touring version.

Each cat back system features an H-pipe crossover tube at the front to maximize exhaust scavenging for maximum power, as well as to take a harsh edge off the exhaust sounds. Tubing diameter for the entire system is 2.25". This is a deep bass tone, no matter how you cut it.

Our exhaust systems have earned praise from owners and the press alike, due to their unique "Jekyll and Hyde" personality. We spend considerable time and effort during development to achieve remarkable civility when idling and crusing at part throttle, 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.

A natural progression from a cat back exhaust system is the installation of downpipes to really help the engine breathe. See our High-Flow Downpipe system section for more details.

Check out the pictures, video, and dyno sheets below to see why this exhaust system is the new king of the hill:


B6 S4 Exhaust Dynosheet B6 S4 Exhaust On Car B6 S4 Exhaust Video
B6 S4 Exhaust Dynosheet B6 S4 Exhaust On Car B6 S4 Exhaust Video

Interior Sound 

Levels Polished Silver Tip Diamond Black Tip
Interior Sound Levels Polished Silver Tip Diamond Black Tip
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