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Integrated Engineering Audi 8V RS3, 8S TTRS 2.5T Evo Downpipe

Integrated Engineering
This is a Race-only product. By adding this product to your shopping cart, you are electronically acknowledging that this product is not to be installed on any registered vehicle that will be driven on any US road, street or highway. In addition, you also acknowledge that the use or installation of this product outside of the intended closed circuit racing purpose may be illegal under the Federal Clean Air Act (42 U.S.C. § 7522(A)(3))

To purchase this product, you must fill out and e-mail the form at the link below to We cannot ship this product to you without a completed form.
Track Car Modification Waiver Form

The IE Downpipe for your Audi RS3 or TTRS is the ultimate choice power adder for your exhaust system. Offering an aggressive and unique motorsport sound from your 5 cylinder turbo engine with complete unrestricted air flow for unmatched maximum power. Enjoy proven performance gains and leading features such as bolt-on direct fit install, long-life construction, cast sections, and amazing sound. Your new downpipe is at home both on a daily commute or blasting down the track!

Product Features

  • Massive horsepower & torque gains
  • 3.5" inch tubing replaces the restrictive factory size
  • Bolt on fitment - no hassle or poorly fitting parts when you choose IE
  • Cast downpipe sections - exact fit & ultimate flow
  • Constructed of 304 stainless piping - long-lasting and high-quality material
  • Thick turbo flange - prevents leaks and warping
  • High flow 200 cell catalytic converter - full power with reduced pollution and smell
  • High-quality flex section - allows for more adjustment and won’t fail
  • All inclusive kit - downpipe, mid pipes, all hardware
  • TIG welded construction - equates to long-lasting welds that are less likely to fail

Ready to unlock stage 2 on your 2.5T?

Your Audi RS3 or TTRS is a sporty fun drive straight from the factory, however, there is a lot of power hiding just inches from your right foot. You may already have a Stage 1 Tune, but you're ready to feel the complete performance potential from your powerful 2.5T engine. Adding the IE downpipe is the key to unlocking Stage 2 horsepower and fully releasing that RS beast!


Your 2.5T engine is capable of supercar level horsepower on the stock engine and turbo reliably with a Stage 2 Tune alone! However, the factory installed downpipe is designed for maximum emissions and economy, not for power. This design is riddled with small piping, harsh bends, and power sucking restrictions that limit your power gains to only Stage 1 Tune levels. In order to correct that, a true performance downpipe is required to open up the exhaust flow and allow the turbo to spin freely!


IE engineers set out to design the ultimate downpipe option for the 8V RS3 and 8S TTRS chassis by employing leading-edge development technology along with highly specialized cast manufacturing. By using cast sections this allowed our engineers to design specialized shapes into the downpipe itself that lets it conform and fit into very tight spaces while retaining it's large size and maximized flow rates. The design is so specialized that 3D scanning was used to build a digital model of the chassis to design in allowing us to build shapes down to the millimeter. This design is just not possible using traditional stainless steel pipes and bends found in most exhaust manufacturing.


Bolting this downpipe onto your Audi along with other matching bolt-ons and an IE STage 2 Tune results in up to 577 horsepower! You can take your RS3 or TTRS from a sporty driver to a power monster in a single weekend. Downpipe requires Stage 2 Tune for complete installation.


Your RS 2.5 TFSI engine has an amazing 5 cylinder sound that all enthusiasts love. Unfortunately, much of that sound is muffled by the factory downpipe system. The cast design of your IE downpipe creates an aggressive and deep tuned sound that showcases the unique rumble from the 5 cylinder turbo engine. It remains perfectly daily drivable and modest on your daily commute, but when you put the pedal down it transforms into an all-out howling beast!


By employing a high flow metal matrix catalytic converter, horsepower loss is almost non-existent while keeping unpleasant smells and increased emissions to a minimum. However, the CAT section can be completely removed and replaced with a straight exhaust pipe for track days or drag events if you wish.


This downpipe holds the seal of IE quality and has been manufactured to last as long as you own the vehicle and beyond. Constructed from 304 stainless steel and expertly tig welded for incredible reliability. The cast and CNC machined turbo flange is thick to prevent leaks or warping at the turbo while a quality flex section works to allow normal movement between the chassis and engine without adding strain to the downpipe.


This downpipe kit includes everything needed to bolt-on directly with no permanent modifications or alterations to the vehicle. The removal of the factory downpipe is a very long process and is only recommended to be performed by a professional. DIY is not recommended for most on this product. CLICK HERE to view and download a step-by-step install guide (coming soon).


  • 2016+ Audi 8S TTRS 2.5T
  • 2017+ Audi 8V RS3 2.5T

Vehicle fitment is confirmed for the US and Northern America (NA) fitment. Some Rest Of World (ROW) models may have incompatible exhaust systems. Please verify factory part number compatibility with US models before ordering or contact us for support with any fitment questions.

More Information
Brand Integrated Engineering
Stock Type N/A
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