IE Cat-Back Exhaust System - B9/B9.5 S4
- Mfg Part #
- IEEXCK5
- ECS Part #
- ES#4709360
- Brand
-
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Product Details
The IE Catback Exhaust System for your Audi B9/B9.5 S4 incorporates IE's in-house engineered DroneTrap technology to deliver a truly aggressive exhaust note without any annoying drone or rasp. Engineered with cutting-edge design features, including mandrel-bent stainless steel, TIG welding, multi-point reinforcements, and oversized quad tips. Experience the elevated and enriched sound your S4 deserves.
LEADING FEATURES
- DroneTrap Technology - IE's proprietary no-drone resonator design
- Bolt-on direct fit -No cutting, no welding, no hassle
- Aggressive look -Large 90mm slash-cut quad tips
- High-flow design -Dual 2.5" piping to support any power output
- Reliable engineering -Leak free, stamped, & multi-point reinforced
- 50 states legal - No check engine light & emissions compliant
DroneTrap:
- IE's advanced DroneTrap technology captures the pulse waves responsible for your B9 3.0T engine's exhaust note and draws them into dual mathematically tuned resonators. The internal ports are 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 deepened and enriched exhaust acoustics you love.
QUAD SLASH-CUT TIPS
- What is the point of a larger exhaust that looks stock? Stand out from the crowd with oversized 90mm quad slash-cut exhaust tips. These aggressive-looking tips fill the factory exhaust cutouts for that high-end sporty look.
COMPLETE BOLT-IN KIT
- IE's catback design includes all sections to replace the factory exhaust tips, mufflers, and resonator up to the midpipes. Enjoy an unrestricted system that delivers the perfect exhaust note from your turbocharged V6 engine.
OPTIONAL MIDPIPES
- Want to take your catback to the next level? Add a set of IE Midpipes for an even larger boost in sound. By upgrading this section, you'll remove the two factory resonators and 12 feet of exhaust piping, further improving exhaust flow and acoustic notes.
- Midpipe upgrade is optional, and the catback can be installed with either stock or IE midpipes.
ADVANCED ENGINEERING
- Advanced 3D scanning tools and cutting-edge software provide IE's engineers with a high-resolution digital model of the Audi B9 S4 chassis. This data is then used to maximize the exhaust size for flow and optimize all available space for the perfect catback fitment.
TIG WELDED T304L STAINLESS STEEL
- All piping is constructed of mandrel-bent T304L stainless steel to offer superior corrosion resistance. All joints are hand TIG welded using precise fixtures and tooling. IE takes great pride in knowing your new exhaust will sound remarkable and stand the test of time.
STAMPED RESONATOR
- The DroneTrap system is wrapped up in IE's stamped multi-wall resonator that reinforces the housing inside and out. This high level of manufacturing protects the resonator from warping or splitting at the welds under exhaust movement.
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 designed to stand the test of time. Drive confidently knowing your exhaust is securely mounted and protected against annoying rattles or breaks.
BRIDGED PIPING
- Sections comprised of dual 2.5" piping running in parallel 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
- Enjoy a tuned and enjoyable exhaust note without any raspy leaks ruining the show. IE's exhaust system assembles with their wide-width stretch clamps designed to seal and pull your exhaust connections together. This style of clamp design is popular in high-end OE applications and is known for long-term reliability.
This Part Fits the Following Vehicles
| Make | Model | Submodel | Engine | Special Fitment Notes |
|---|---|---|---|---|
| Audi | B9 S4 | Quattro | 3.0T | Use vehicle selector to confirm fitment |
Installation
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New/Unused Product Returns
ECS Tuning will accept returns for unused products within 90 days of the ship date for a refund to the original payment method used. The customer is responsible for the return shipping costs and fees. If selecting to use a prepaid shipping label, the shipping cost will be deducted from the total refunded amount. All new/unused products must be new, unused and must be in the original packaging, including labeling, manuals, hardware, etc. Special order parts are non-refundable.
In the event that we find an error on our website or on behalf of an ECS Tuning Representative, we will provide a return shipping label from the original delivery location.
Refused Packages
Any domestic orders that are returned to ECS Tuning as refused by receiver or non-deliverable will be subject to a return handling fee and will be processed as a return in compliance with our standard return policy, including a 15% restocking fee.
Any international orders that are refused at the time of delivery will be subject to carrier abandonment of the package, at which time the ordered products would be discarded by the carrier. The customer will not be refunded for the value of the order and the discarded products are no longer retrievable.
Return Process
ECS Tuning now offers an online returns solution! To get started, simply log into your ECS Tuning account, Click the "View Orders" button on the My Account home page and select the order that you wish to make a return on to begin. If you have any questions, feel free to reach out to our Customer Service Team for assistance!
Please note: Refunds will be processed to the original payment method used on the order or to an in store credit, respective to the type of return that is made as well as any pre-existing arrangements with an ECS Tuning Customer Service Representative. In the event that multiple forms of payment were used, we will refund the value to an in store credit. In the event that a return label is provided, these charges may be deducted from the total refund you receive.
Original shipping costs are non-refundable and the buyer is responsible for return shipping charges. ECS Tuning will not accept COD deliveries.
All in store credit balances will expire after one year from the original purchase date.
Shipping Policy
Free Shipping On Orders $49 & Up
Items marked with a 'Free Shipping On Orders $49 and Up' logo may qualify for free standard economy ground shipping to the contiguous United States (48 states) for most orders with a value greater or equal to $49.00 USD. Oversized products and direct ship products are excluded from this offer unless otherwise noted.
Free Shipping
Items marked as 'Free Shipping' may qualify for free standard economy ground shipping to the contiguous United States (48 states). Oversized products and direct ship products are excluded from this offer unless otherwise noted.
The policies listed above are subject to change at any time without notice.
Lifetime Replacement
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Why You Should Shop From ECS Tuning
ECS Tuning stands out as more than an automotive parts supplier-it's a vibrant community fueled by a shared passion for cars. Born from the enthusiasm of car lovers, we offer an unmatched understanding and commitment to the automotive world, providing high-quality parts and accessories sourced from our own experiences. Our selection is meticulously crafted to meet the highest standards of performance, quality, and design, catering to both the latest trends and classic styles.
Our distinct advantage lies in our passionate team and comprehensive support, offering expert advice and seamless service from selection to installation. Shopping with ECS brings exclusive perks, including our Lifetime Replacement Guarantee and free shipping on orders over $49, enhancing the value of every purchase. As a central hub for car enthusiasts, ECS Tuning fosters a rich community where ideas and experiences flourish, transforming us from a mere supplier into a platform where automotive dreams come to life.
Cancellation Policy
At ECS Tuning, we understand that plans can change. That's why we offer a flexible cancellation policy for our customers. You may cancel your order at any time before you receive the shipment confirmation. This policy is designed to provide you with peace of mind and the flexibility to make adjustments to your purchases as needed. Should you decide to cancel your order, simply reach out to our customer service team, and we will assist you with the process swiftly and efficiently.
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