The all-new iE Catback Exhaust System for 2009-2015 supercharged Audi S4 delivers entirely addicting primal scream. Coaxing a more raw sound from any V6 can be tough, so the Audi B8 S4 3.0T took some extra “voice coaching” from our engineers. The iE Catback delivers the perfect exhaust note while kicking the exhaust drone to the curb via our proprietary DroneTrap technology, finely tuned mufflers, X-pipe design, plus plenty of other design details for flow, durability, sound, and style.

• Say it loudly -Aggressive, yet refined exhaust note
• DroneTrap Technology -Proprietary no-drone resonator
• 90mm quad exhaust tips -Motorsport look
• Dual 2.5” tubing -High flow design
• Integrated X-pipe -Superior sound
• Easy Install -No cutting, no welding, no hassle
• Bolt-on fit -Includes hardware for stock or iE midpipes
  

TURN UP THE VOLUME. YOUR STEREO IS OBSOLETE.

Coaxing a more raw, yet refined sound from any V6 can be tough, so the Audi B8 S4 3.0T took some extra “voice coaching” from our engineers. The iE Catback Exhaust delivers a primal scream while kicking the exhaust drone to the curb via our proprietary DroneTrap technology. For bonus-style points and engineering might, the B8 S4 catback includes 90mm quad exhaust tips, dual 2.5" tubing for high-flow design and an integrated X-pipe for greater exhaust flow and superior sound.

OVERSIZED SLASH-CUT TIPS.

The quad oversized 90mm exhaust tips will make your B8 S4 look fast, even when it’s standing still. These slash-cut tips feature a motorsport-inspired brushed finish with adjustable depth for dialing your aggressive looks up or down.

iE DRONETRAP TECHNOLOGY.

DroneTrap is our proprietary technology that takes away the buzz-killing drone, leaving only the sweet song of your people. It captures the pulse waves that make up the engine's exhaust note, draws them into an internal port, resonates them against each other, and cancels annoying drone waves. Only the good stuff remains—a full, rich, audacious call of the wild.

WANT IT LOUDER?

For those craving more, pairing this catback with iE Midpipes delivers a louder (yet still refined) experience. If you want to keep it on the mild side, retaining the factory midpipes will still release that addicting rumble while maintaining street-friendly levels for everyday driving.

iE catback is a bolt-on fit to both stock or iE Midpipes.

QUALITY IS IN THE DETAILS.

It’s not just the sound that the iE Catback delivers. They always bring their A-game to serve up exceptional designs made from built-to-last materials for installs that fit like a glove. iE's Catback Exhaust is made from corrosion-resistant, mandrel-bent T304L stainless steel with strong, multi-point, boxed exhaust hangers for long life and reinforced and bridged straight sections to prevent rattles. Install kit includes all hardware and leak-free, OE-quality exhaust clamps.

ENGINEERING THE PERFECT FIT.

3D scanning and cutting-edge software give our engineers a high-resolution digital model of the Audi B8 S4 chassis. This data allows us to maximize exhaust flow and optimize every inch of available space, ensuring a perfect fit with no rattles or rubbing.

• AUDI S4 (B8/B8.5) (2009-2015)

No permanent mods or hassle to deal with on this one. Installing your new iE Catback Exhaust kit is straightforward. You’ll need a few basic tools. An auto lift is not necessary, but will make your life a lot easier -well, your installation, anyway.

Average installation time: 1-2 hours.

IEEXCG3

Manufactured by

Integrated Engineering (IE)