SKU UH078-EXA Category


Unitronic Performance Downpipes for the 2018+ SQ7, SQ8, RS Q8, Urus, Cayenne Turbo and Bentayga equipped with the 4.0TFSI EA825 (DWR/DCU/DHU) engine are a direct bolt-on upgrade, designed to optimally eliminate unwanted restrictions in the factory downpipes, reduce turbo lag and enhance the exhaust note. They utilize dual 6” 400cpsi ultra high output catalytic converters, 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, these Performance Downpipes help yield up to 765HP / 764LB-FT on the 4M SQ7 and SQ8 with more 4.0TFSI EA825 SUV Performance Software offerings coming soon.

Features / Benefits
– GESi 6” G-Sport Ultra High Output UHOX 400cpsi Catalytic Converters
– 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
– Compatible with factory cat-back exhaust system

Hardware Included
– Unitronic Performance Downpipes Featuring GESi 6” G-Sport Ultra High Output UHOX 400cpsi Catalytic Converters
– All required installation hardware and gaskets.

Required Software
– Stage 2


– 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. The team quickly opted for dual GESi 6″ UHOX converters for these Performance Downpipes, which met the requirements for the modern 4.0TFSI, while being rated for a massive 1200HP.

– Unbeatable Design and Construction
Unitronic also 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 converters provide exceptional flow while greatly enhancing the thunderous sound of the turbocharged 4.0TFSI engine. The smooth post-cat stainless steel transitions lead into dual 4.5″ T304 stainless steel tubing, terminating 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 these all-new Performance Downpipes, Unitronic Stage 2 ECU Software is available for the 4M SQ7/SQ8 and coming soon for more 4.0TFSI EA825 SUV applications. With testing and validations completed, power outputs are increased by up to +262HP / +168LB-FT with Unitronic Stage 2 93octane/98ron Performance Software for a maximum of 765HP / 764LB-FT.


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