IE 3" Catted Downpipe - B9 Audi Quattro | A4 | A5 | Allroad | 2.0 TFSI
SKU: 74767213097

IE 3" Catted Downpipe - B9 Audi Quattro | A4 | A5 | Allroad | 2.0 TFSI

Sale price$482.62 Regular price$536.25
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

IE 3" Catted Downpipe - B9 Audi Quattro | A4 | A5 | Allroad | 2.0 TFSIOVERVIEW IE B9 Audi 2. 0T 3" Catted Downpipe The IE B9 A4 & A5 Catted Downpipe works to reduce turbocharger back pressure and increase power. In turn, turbo spool should increase and with a performance ECU tune you will unlock the performance potential of your car. Experience power gains across the entire RPM range as the exhaust emits an aggressive sound that you are bound to love. All IE exhaust systems are designed in house using state of the art

OVERVIEW

IE B9 Audi 2.0T 3" Catted Downpipe

The IE B9 A4 & A5 Catted Downpipe works to reduce turbocharger back pressure and increase power. In turn, turbo spool should increase and with a performance ECU tune you will unlock the performance potential of your car. Experience power gains across the entire RPM range as the exhaust emits an aggressive sound that you are bound to love. All IE exhaust systems are designed in-house using state of the art digital scanning for a perfect fit and manufactured from thick wall 304 stainless steel offering a lifetime of performance and fun.

VEHICLE FITMENT

Audi - A4 2016+ (B9) 2.0T

Audi - A5 2016+ (B9) 2.0T

Audi - A4 Allroad 2017+ (B9) 2.0T

POWER GAINS

Installing the IE 3" catted downpipe on your B9 A4, A5, or Allroad 2.0T engine, you can expect huge power gains of +20-25HP when installed with a Stage 2 ECU tune or plug-in tuning box (this can vary by brand). *Power figures are on full bolt-on and tuned Stage 2 cars. Power measured at the hub performed on a hub dynamometer, power figures are taken from multiple vehicles. Power gains may differ from advertised as individual vehicles will vary in maintenance, mileage, and conditions.

LEADING FEATURES

Excellent horsepower gains of 21.8HP - with a plug-and-play tuning box
Cast sections ensure maximum flow and gorgeous fit and finish
True 76mm Throughout- Does not neck down to OE Sizing at catalyst discharge
76mm tubing replaces the restrictive 65mm factory tubing
Direct bolt-on fitment - no modification or bending of mount brackets required
100% 304 stainless steel pipe construction - lifetime of worry free performance
Thick cast turbo flange - ensures long gasket life and no leaks
High flow 200 cell catalytic converter - full power with reduced pollution and no exhaust smell
High quality metal matrix catalyst flows more than cheaper ceramic matrix cats
Tuned resonator - keeps highway drone to a minimum
Fully lined extra tough flex section will never collapse internally
Kit includes - Downpipes, midpipe, all mounting hardware (nuts, bolts, clamps, gaskets)

HIGH-FLOW CATALYTIC CONVERTER

IE’s performance downpipe includes a high-flow 200 cell per inch metal matrix catalyst located as close to the turbo as possible. Metal matrix catalysts are higher performance because the matrix web is thinner, allowing higher flow in the same size. Our catalyst is also a very large diameter, allowing a large flow area and maximum power. By being placed close to the turbo, emissions and unwanted unpleasant smells are greatly reduced

DIRECT BOLT-ON DOWNPIPE WITH PERFECT FIT

The IE downpipe replaces over 6 feet of restrictive factory exhaust tubing, all the way back to the OE "Cat Back" rear section. Sturdy fabricated mounts and precise engineering result in a rattle free and long last replacement exhaust system. 3D scanning systems were employed to ensure perfect placement both in pre and post production phases.

About Integrated Engineering: Merging decades of experience with hundreds of hours of prototyping, engineering, dyno testing and daily usage evaluation has output exhaust systems that are the ultimate compliment to your performance car. IE products are proudly engineered, designed, and manufactured in-house, in Salt Lake City USA.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 74767213097

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Lucy Mejia
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★★★★★ 5
So will not write down your foot
Size: Medium, Color: (001) Black / Black / Castlerock
I love these socks. They have a little bit of gel on the top of the heel for support in your tennis shoes and so your socks don’t write down. Very good quality.
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Reviewed in the United States on May 6, 2026
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Twins9
Battle Creek, US
★★★★★ 5
Comfy and Stay Put
Size: Medium, Color: (002) Black / Black / Halo Gray
These socks are honestly great. They’re super thin and light, so once you have them on, you kind of forget they’re even there. No bulky feeling in your shoes at all. The best part is they actually stay on. I hate no-show socks that slide down after five minutes, and these don’t do that. The little grip on the heel really works, so you’re not constantly adjusting them all day. They’re breathable too, which is nice if your feet run warm. They dry fast and don’t get that gross sweaty feeling. And there’s no annoying seam on the toe, so nothing rubs or feels uncomfortable. Basically, they’re just comfy, stay put, and don’t cause problems — which is all I want from socks.
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Reviewed in the United States on January 16, 2026
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swwkennyg
Omaha, US
★★★★★ 5
Perfect sucks
Size: Medium, Color: (001) Black / Black / Castlerock
Wonderful socks . The weight is perfect !! These do not slip when in a shoe they stay out !!
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Reviewed in the United States on April 14, 2026
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Monica Alzate
Houston, US
★★★★★ 4
Amazing but quality changed
Size: Large, Color: (002) Black / Black / Halo Gray
Love these socks so much, been buying them for about 4 years now!! Not giving them 5 stars anymore because the quality is different and not as good, durable and thick as before.
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Reviewed in the United States on July 10, 2025
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Heather260
Dallas, US
★★★★★ 5
The best no show socks
The only no show socks I have ever found that do not slide down. These are very comfortable and the extra tab on the back provides comfort by keeping shoes from rubbing the back of your foot. The top of the sock also comes up high enough to cushion the top of your foot all while still remaining hidden while wearing tennis shoes or even with my hey dudes.
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Reviewed in the United States on November 30, 2025

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