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Integrated Engineering Cast Downpipe (17-22 S4, 18-22 S5)

LOWEST PRICE GUARANTEED
$989.99
1099.99   You Save $_js_money Until March 26 . Sale Ends March 26 .
SKU: MD-118858
MPN: IEEXCK3
Ships to 43215 Change Zipcode

Product Details

Description

The all new B9 Audi S4 & S5 is an impressive beast off the factory floor. Even the OEM exhaust tone isn't bad for a stock car. But if you are like us you want to hear your S4/S5 roar. Welcome the IE downpipe for the Audi B9 S4 and S5 applications.

Every detail is maximized to provide the turbo and engine with a completely unrestricted exhaust flow path for up to 45HP & 41TQ (on hybrid turbo setup). The TIG-welded 304 stainless and investment cast body delivers addictive sound, quality finish, effortless install, reliability, and maximized performance for your turbocharged V6.

IE's unique thick-wall investment castings produce an aggressive, drone-free exhaust note without the "tinny" sound typical on most full stainless body aftermarket options. Enjoy not only a louder exhaust but one with improved engine and turbo notes that will deliver miles of smiles.

Investment Casting

Other aftermarket downpipes use large sections of thin-wall steel tubing to manufacture the downpipe body; this is a cheaper process but can reduce sound quality and sacrifice exhaust flow. Investment casting allows for an optimized design that smoothly transitions exhaust flow from the massive 6" body to the dual 2.5" exhaust legs. The casting also provides a beautiful look that turns the entire downpipe into an attractive gold finish as it wears in from heat cycles over time.

200 CPSI Catalytic Converter

IE's downpipe includes a high-flow 200 CPSI catalytic converter. This performance CAT allows for full and unrestricted power from Stage 2 ECU tunes and hybrid turbo upgrades while reducing emissions output and eliminating unwanted smells and bumper stains found on cat-less designs.

Hybrid Turbo Ready

The stock downpipe becomes a significant restriction when upgrading to a larger hybrid turbo. IE's cast downpipe is a direct-fit to available upgraded turbochargers on the market and will allow total horsepower, torque, and spool potential from your turbocharger investment.

Dyno Gains Chart

The following chart details the power gains (WHP & WTQ) over the baseline power numbers taken from the stock downpipe on our hybrid turbo development S4. The "0" baseline is the maximum power/torque made, and each following increment is the additional power gained from the IE downpipe upgrade.

Integrated Engineering Dyno Chart IEEXCK3

Note: Requires Stage 2 or hybrid turbo ECU tuning

Product Features

  • High Quality Cast Body
  • 200 CPSI Catalytic Converter
  • Maximized for Hybrid & Stock Turbochargers
  • Increased Exhaust Sound
  • Improves Turbo Efficiency & Speeds Up Turbo Spool
  • Thick Wall Casting Reduces Radiant Heat in Engine Bay
  • 304 Stainless STeel Downpipe Legs & CAT
  • 6" Downpipe Body to Dual 2.5" Downpipe Legs
  • Hand TIG Welded
  • Direct Bolt In Replacement

installation

Estimated Install Time: 2 Hours

Install Guide

Fitment Guide

Does this fit my vehicle?

Fitment Guide
Start Year End Year Make Model Submodel Cyl Lit Fuel FuelDel ASP EngDesg Notes
2018 2022 AUDI S4 PREMIUM
PREMIUM PLUS
PRESTIGE
V6 3.0 GAS FI T ALL  
2018 2022 AUDI S5 CABRIOLET PREMIUM
CABRIOLET PREMIUM PLUS
CABRIOLET PRESTIGE
COUPE PREMIUM
COUPE PREMIUM PLUS
COUPE PRESTIGE
SPORTBACK PREMIUM
SPORTBACK PREMIUM PLUS
SPORTBACK PRESTIGE
V6 3.0 GAS FI T ALL  

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Customer Reviews

4 / 5 Avg. Rating
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  • Review shared from Integrated Engineering Cast Downpipe w/Cat (15+ A3/S3, 16+ TT, 15+ Golf R/Alltrack)

    Awesome downpipe!

    Picked up the IE at the introductory price for my Audi 8V S3, and realize now that it's a bargain at regular price also. Great quality piece, and install was fairly simple since fitment was spot on. I was concerned about drone with my stock exhaust and resonator delete, so I was prepared to put my resonator back on if necessary.

    To my surprise (or shock), there is zero drone with the IE pipe! Yes, you definitely hear it at cold start up, and when heavy on the gas - but during daily driving when at 40% or less throttle, it almost sounds stock. You can barely hear the difference at any cruising RPM. Well done IE, and well done on the deals Modded Euros!! :)

    Nick
  • Review shared from Integrated Engineering Cast Downpipe w/Cat (15-16 A3 FWD, 15+ Golf/GTI/Sportwagen)

    Always a fan of IE. Would def get again. Sounds great. Gave 4 stars as its not the cheapest option but def is quality

    Ryan Winston
  • Review shared from Integrated Engineering Cast Downpipe w/Cat (15+ A3/S3, 16+ TT, 15+ Golf R/Alltrack)

    IE downpipe on A3 quattro with stock resonator/exhaust

    If your looking for performance gains without the smell and loud noise this is for you! On cold start you can not tell its been changed, at WOT it comes alive and sounds more like a glorious rocktship with induction, engine, and boost noise instead of loud exhaust. The wife can not tell it was changed, 0 drone, no rasp, and quiet on highway, crazy right. I bought a dfg spacer and switched to apr stage 2 tune. The spacer will make the car smell horrible and throw a P013e code, dont use a spacer IE did an excelemt job designing this, took it off and smell is gone thankfully, code is gone and it pulls harder. Car is an unassuming beast now. I did end up wrapping the top part of the downpipe to deal with mountain run heat problems, its so close to abs and steering that i think the stock one was causing problems on extended runs, steering would go light and adds to brake fluid heating up. Modded euros aslo proved to be an excellent vendor. Both IE and modded euros highly reccomend, Thanks again.

    Chris
  • Review shared from Integrated Engineering Cast Downpipe w/Cat (15-16 A3 FWD, 15+ Golf/GTI/Sportwagen)

    Great quality piece. Cast front section and awesome sound

    Adam
  • Review shared from Integrated Engineering Cast Downpipe w/Cat (15-16 A3 FWD, 15+ Golf/GTI/Sportwagen)

    Im running an IE tune on my car and decided to go with their downpipe as well. Was not disappointed. Top quality piece. Would buy again

    Larry H
  • Review shared from Integrated Engineering Downpipe w/Cat (09-16 A4, 10-17 A5 2.0T)

    Fitment

    Just purchased this down pipe and absolutely love how it sounds and easy for it to be installed. My only gripe with this product is I wish it came with an adapter piece to connect this down pipe to an aftermarket exhaust. I ended having to fabricate the piping to make it fit. Overall excellent product. Defintely worth the money.

    Wil @all_raudi
  • Review shared from Integrated Engineering Cast Downpipe w/Cat (15-16 A3 FWD, 15+ Golf/GTI/Sportwagen)

    perfecr sound

    went with IE, didn't want anything ricy. wanted something that was louder, but classy if that makes sense. VW is "cheap luxury and classy brand". this sounds deeper, has a bit of a growl. not louder unless i hit the throttle a bit harder than "regular driving". acceptable volumes, bjut can also tell its def modified.bmw m3 levels, paired with a nice exhaust.

    chris
  • Review shared from Integrated Engineering Downpipe w/Cat (17+ A4, 18+ A5)

    Love the sound!

    Gave some aggressive sound to my B9 Audi A4. Not to mention added some horsepower at the same time. IE makes quality hardware

    Brian
  • Review shared from Integrated Engineering Downpipes (12-18 A6/A7, 13-17 Q5, 10-16 S4, 10-17 S5, 14-17 SQ5)

    Aggressive sound & more power

    Love the sound and added hp I picked up with the IE downpipes

    Steve