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3.0" Downpipe - With High Flow Catalytic Converter
T304 Stainless, TIG-welded downpipe
Buy Integrated Engineering Software from 9/3/26 - 9/30/26 for a chance to win your Software for FREE!
Brand:
ES#:
3419055
Mfg#:
IEEXCC5
IE Catted Cast Downpipe
Features cast bends for superior flow and fitment
Buy Integrated Engineering Software from 9/3/26 - 9/30/26 for a chance to win your Software for FREE!
Brand:
ES#:
3569382
Mfg#:
IEEXCI3
IE Cat-Back Exhaust System - B9/B9.5 S4
Delivers a truly aggressive exhaust note without any annoying drone or rasp
Buy Integrated Engineering Software from 9/3/26 - 9/30/26 for a chance to win your Software for FREE!
Brand:
ES#:
4709360
Mfg#:
IEEXCK5
IE Cat-Back Exhaust System - B9 SQ5
Delivers a sporty, deep, and enhanced exhaust sound with DroneTrap resonance tuning system
Buy Integrated Engineering Software from 9/3/26 - 9/30/26 for a chance to win your Software for FREE!
Brand:
ES#:
4658915
Mfg#:
IEEXCZ1
IE ProCore Performance Cast Downpipe - B9 SQ5
Check-Engine Light free! An emissions-friendly approach to exhaust upgrades!
Buy Integrated Engineering Software from 9/3/26 - 9/30/26 for a chance to win your Software for FREE!
Brand:
ES#:
4708494
Mfg#:
IEEXCZ2
Audi RS3 & TTRS 2.5 TFSI EVO 3.5" Downpipe
Deliver up to 577HP with a matching IE Stage 2 Tune and turn your 2.5T into an all-out power monster!
Buy Integrated Engineering Software from 9/3/26 - 9/30/26 for a chance to win your Software for FREE!
*Does not include Y-pipe adapter (IEEXCQ3) - Necessary if mating to stock cat-back system*
*Does not include Y-pipe adapter (IEEXCQ3) - Necessary if mating to stock cat-back system*
Brand:
ES#:
3677700
Mfg#:
IEEXCQO1
IE B8 3.0T Performance Downpipes
Quick and easy way to add horsepower and an aggressive sound! 304 stainless steel 2.5" tubing.
Buy Integrated Engineering Software from 9/3/26 - 9/30/26 for a chance to win your Software for FREE!
Brand:
ES#:
3470770
Mfg#:
IEEXCG2
IE Catback Exhaust System - B9 A4
Features high-flow 2.5" piping, 90mm twin exhaust tips, and iE's DroneTrap technology
Buy Integrated Engineering Software from 9/3/26 - 9/30/26 for a chance to win your Software for FREE!
Brand:
ES#:
4904361
Mfg#:
IEEXCK8
IE ProCore Downpipe - MK8 GTI
Features a full and complete exhaust note with increased flow!
Buy Integrated Engineering Software from 9/3/26 - 9/30/26 for a chance to win your Software for FREE!
Brand:
ES#:
4879772
Mfg#:
IEEXDB5
IE Performance Catback Exhaust - Audi RS3 8V
Let your 2.5L beast roar with the ultimate Audi RS3 exhaust system.
Buy Integrated Engineering Software from 9/3/26 - 9/30/26 for a chance to win your Software for FREE!
Brand:
ES#:
4674821
Mfg#:
IEEXCQ5
When it comes to unlocking the true potential of your Audi, Volkswagen, BMW, or other European performance vehicle, Integrated Engineering is your go-to brand for high-performance parts and upgrades. Available at ECS Tuning, Integrated Engineering offers a wide range of engine components, turbochargers, intake systems, exhaust systems, and performance software, all designed to deliver exceptional performance gains, reliability, and precision engineering. Whether you're looking to boost horsepower, improve throttle response, or enhance overall vehicle performance, Integrated Engineering has the perfect solution for your needs.