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Unitronic Downpipe for 2.5TFSI EVO(UH051-EXA)Select Vehicle

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Description
The Unitronic High-Flow Performance Downpipe for 2.5TFSI EVO (DAZA) engines is a direct bolt-on upgrade, designed specifically to eliminate unwanted restrictions in the factory unit and increase power with the help of Unitronic Stage 2 Software. It also helps reduce turbo lag and enhance the exhaust note, while utilizing a GESi 5” G-Sport Ultra High Output UHO+ 400cpsi Catalytic Converter which is engineered to meet or exceed emissions standards. When combined with Unitronic Stage 2 Performance Software, total output is raised to 621HP/564LB-FT with E85 and other supporting hardware modifications.

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Features / Benefits
  • Cast Stainless Steel pre-cat downturn and post-cat transition
  • Dual 70mm T304 Stainless Steel tubing
  • TIG-welded construction
  • GESi 5” G-Sport Ultra High Output UHO+ 400cpsi Catalytic Converter
  • Factory catalyst placement for maximum efficiency
  • OEM-style corrugated mesh flex bellows
  • Proper factory Oxygen Sensor placement maintained
  • OE exhaust hanger mounting provisions
  • OE Prop-shaft heat shield bracket
  • Direct bolt-on fitment
  • Compatible with factory cat-back exhaust system
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Hardware Included
  • Unitronic High-Flow direct fit Downpipe for vehicles equipped with 2.5 TFSI EVO engines.
  • All required hardware.
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Recommended Software
  • Stage 2
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Locate Dealer
$1,799.99USD
Options
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Unbeatable Design and Construction
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As with the original unit, Unitronic utilized the 1-to-2 split downpipe design. Following Audi’s modeling, Unitronic developed a large high-flow cast stainless steel downturn, increasing cross-sectional area, effectively improving flow and decreasing back pressure. Part of the design criteria was to maintain un-biased flow between the runners. Flow through the large catalytic converter aids with flow distribution; and as a result, pressure and exhaust velocity are balanced to maintain efficiency and the distinct sound of the turbocharged 5-cylinder engine. The post-cat cast stainless steel transition continues, allowing for a smooth transition and flow distribution into dual 70mm T304 stainless steel tubing with OEM-style corrugated mesh flex bellows.
Meets or Exceeds Emissions Standards
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Unitronic Engineers thoroughly validated designs to ensure the Downpipe yields the results intended with several functional prototypes created. While working together with GESi, Unitronic tested several iterations of their G-Sport Emissions Systems Catalytic Converters to ensure the product meets or exceeds emissions standards and finally chose the GESi 5” G-Sport Ultra High Output UHO+ 400cpsi Catalytic Converter which is rated at up to 1000HP by GESi.
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Video
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Install
The Unitronic 2.5TFSI Downpipe is a direct OEM replacement. Using 3D modeling technology, Unitronic's Downpipe is a direct bolt-on upgrade that can be installed within a matter of hours with moderate mechanical knowledge and tools.
difficulty
Difficulty Level:
4 / 5
Installation Guide
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