UNITRONIC PERFORMANCE DOWNPIPE - B9 S4/S5 3.0TFSI
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 sales@ngpracing.com. We cannot ship this product to you without a completed form.
The Unitronic Performance Downpipe for the 2017+ S4® & S5® 3.0TFSI® EA839 (CWG) engine is a direct bolt-on upgrade, designed to optimally eliminate unwanted restrictions in the factory downpipe, reduce turbo lag and enhance the exhaust note. It utilizes a 6” 400cpsi ultra high output catalytic converter, designed in partnership with Unitronic, from our emissions partners at Global Emissions Systems Inc (GESi®).
Paired with Unitronic Stage 2 Performance Software and other supporting bolt-ons, this Performance Downpipe helps yield up to 467HP / 547LB-FT on the 3.0TFSI equipped B9 S4 and S5.
Features / Benefits
- GESi 6” G-Sport Ultra High Output UHOX 400cpsi Catalytic Converter
- 6" to 4.5" post-cat transition with T304 Stainless Steel tubing
- TIG-welded construction
- OEM-style thermal isolation/heat shielding
- Factory catalyst placement for maximum efficiency
- Proper factory Oxygen Sensor placement maintained
- Direct bolt-on fitment
- Enhanced exhaust note
- Compatible with the factory cat-back exhaust system
Hardware Included
- Unitronic Performance Downpipe Featuring a GESi 6” G-Sport Ultra High Output UHOX 400cpsi Catalytic Converter
- All required installation hardware and gaskets.
Required Software
- Stage 2
Fitment/Applications:
- 2017-2024 Audi B9 S4 3.0T
- 2018-2024 Audi B9 S5 3.0T
Does not fit SQ5 models
Meets or Exceeds Local Testing Standards
While working closely with GESi through several iterations of their G-Sport Emissions Systems Catalytic Converters over the years, our goal once again was to ensure this product would satisfy our compliance demands, while fulfilling Unitronic's performance related goals. Unitronic quickly opted for a GESi 6" UHOX converter for this Performance Downpipe, which met the requirements for the modern 3.0TFSI, while being rated for a massive 1200HP.
Unbeatable Design and Construction
Unitronic utilized OEM-style thermal isolation / heat shielding to not only protect the engine bay from radiant heat, but also ensure catalyst temperature is reached and maintained for optimal efficiency and function. The large 6" catalytic converter provides exceptional flow while greatly enhancing the sound of the turbocharged 3.0TFSI engine. The smooth post-cat stainless steel transition leads into 4.5" T304 stainless steel tubing which terminates at the factory 3-bolt mid-pipe flanges to ensure a seamless direct bolt-on fitment.
Maximum Performance with Unitronic Software
In order to take full advantage of this all-new Performance Downpipe, Unitronic Stage 2 ECU Performance Software is now available for the B9 3.0TFSI platform. With testing and validations completed, power output is dramatically increased over Stage 1 and Stage 1+ levels for a maximum of 467HP / 547LB-FT.
Lifetime Warranty
As with all Unitronic products, this Performance Downpipe has gone through extensive testing in a wide range of conditions on the road, track and dyno in order to ensure they meet Unitronic's high standards for reliability and function. As a result, it is backed by Unitronic's limited lifetime warranty, which protects your hard-earned dollars and shows that they stand behind their products. Warranty Registration is REQUIRED for all products integrating GESi Catalyst(s). You can register your new downpipe by clicking or tapping here.
Install
The Unitronic Performance Downpipe for the B9 S4 and S5 offers direct bolt-on installation. Using 3D modeling technology, Unitronic's Downpipes feature precise fitment allowing them to be mounted within a matter of hours with moderate mechanical knowledge and tools.