IE's Catback Exhaust System for your Audi B9/B9.5 SQ5 features our DroneTrap technology to deliver an enriched sound without the annoying drone. Our passion for design shines with cutting-edge engineering and manufacturing techniques, mandrel-bent, stainless steel, TIG welding, and multi-point reinforcements to deliver an aggressive and refined exhaust note from the turbo six-cylinder engine.

Sound Tuning

IE DRONETRAP TECHNOLOGY

IE's advanced DroneTrap technology captures the pulse waves responsible for your engine's
exhaust note and draws them into a mathematically tuned resonator. The internal port is engineered to resonate these waves against each other in a process that selectively cancels out those responsible for annoying drones. The remaining waves produce the deep and enriched exhaust acoustics enthusiasts love.

COMPLETE TRUE CATBACK

IE's SQ5 catback includes all sections to replace the factory tailpipes, mufflers, resonators, and mid-pipes up to the downpipe. Enjoy an entirely new exhaust system that delivers an instant and
perfect balance of flow and harmonics to your Audi S-class SUV.

Sound Clip:

TIG WELDED T304L STAINLESS STEEL

A quality catback needs to sound remarkable AND stand the test of time. All piping is
constructed of mandrel-bent T304L stainless steel to offer superior corrosion resistance. All
joints are expertly TIG welded by hand using precise fixtures and tooling. We take great pride in
knowing your new exhaust was built strong to last.

STAMPED CENTER RESONATOR

The magic of IE's center resonator doesn't end with our internal DroneTrap technology. The
entire system is wrapped up in our stamped multi-wall housing. These design details reinforce
the resonator housing inside and out and protect it from warping or splitting at the welds under
normal exhaust movement.

RELIABLE FLEX SECTIONS

The forward mid-pipe sections of our catback incorporate high-quality double-wall flex joints with
the strength to remain leak-free. Enjoy your exhaust upgrade without worry, knowing your flex
sections can withstand forces from even aggressive track and racing environments.

REINFORCED HANGERS

Engine movement and exhaust weight are transferred into the exhaust hangers, which puts a lot
of stress on the mount brackets. IE's catback system is manufactured with multi-point and
boxed-in hanger mounts that will hold your exhaust securely in place without any annoying
rattles or breaks.

BRIDGED PIPING

Parallel sections of the rear catback are reinforced and bridged to offer superior strength and
weight dispersion. This minor detail works hard to reduce stress on the welds and protect the
piping from vibrations and twisting that can lead to leaks and rattles.

LEAK-FREE CLAMPS

There are no thin-sided finicky exhaust clamps found here. The entire exhaust system
assembles with our wide-width stretch clamps designed to seal your exhaust connections and
pull them together. This style of clamp design is used in numerous high-end OE applications
and is known for long-term reliability