Exhaust› Exhaust Pipes, Systems and Components

Unitronic

2.0TSI EA888 EVO4 Performance Downpipe w/ GESI UHOX Cat

$2,099.99

SKU: UH071-EXA

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Special Order
Ships in 4–6 weeks
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$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Unitronic Performance Downpipe is a direct bolt-on upgrade for the MK8 GTI equipped with the 2.0TSI EA888 EVO4 engine. This downpipe features a 5-inch 400cpsi ultra-high output (UHOX) catalytic converter developed with GESI.

Constructed with TIG-welded stainless steel and an OEM-style corrugated mesh flex bellow, it ensures durability and optimal flow. The downpipe includes necessary hardware like V-band clamps and centering rings, along with a stainless steel midpipe section and reducer.
Show original supplier description
The Unitronic Performance Downpipe is engineered as a direct bolt-on upgrade for the MK8 GTI featuring the 2.0TSI EA888 EVO4 engine. At its core is a 5-inch G-Sport UHOX 400cpsi catalytic converter, a collaborative development with emissions partner Global Emissions Systems Inc (GESi). The construction features TIG-welded stainless steel for durability, CFD-optimized upper downpipe castings for superior flow into the catalytic converter, and an OEM-style corrugated mesh flex bellow. Hardware included consists of V-band clamps, centering rings, a stainless steel midpipe section, and a stainless steel exhaust reducer. To fully leverage the performance enhancements of this downpipe, Unitronic Stage 2 ECU Software is required. When paired with Unitronic Stage 2 E85 Performance Software and other supporting modifications, this downpipe system can contribute to outputs of up to 417HP and 426LB-FT. The installation is described as a direct OEM replacement, manageable within a few hours with moderate mechanical skill and tools, rated at a difficulty level of 4 out of 5. This downpipe is compatible with factory or upgraded cat-back exhaust systems, with reducers available for both. Warranty registration is required for all products integrating GESi Catalysts.
Vehicle Symptoms
  • muffled turbo spool and delayed boost response
  • restrictive feel at high rpm during full throttle pulls
  • intermittent CEL for catalyst efficiency
  • rotten egg smell from exhaust after spirited driving
  • exhaust tone sounds flat and constrained under load
Diagnostic Codes
  • P0420 – Cat Sys Efficiency Below Threshold (B1)
Relevant Conversations
  • MK8 GTI downpipe P0420 fix options
  • EA888 EVO4 high flow catted downpipe review
  • Unitronic vs IE vs Wagner MK8 GTI downpipe
  • does GESI UHOX 400 cpsi downpipe pass emissions
  • MK8 GTI downpipe install time and tips
  • Unitronic downpipe MK8 GTI sound with stock exhaust
  • MK8 GTI stage 2 tune downpipe requirement
  • P0420 after catted downpipe with tune
  • Unitronic UH071-EXA downpipe where to buy
  • MK8 GTI downpipe with GESI cat long term review

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandUnitronic
Part NumberUH071-EXA
CategoryExhaust
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Shipping

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