034Motorsport 034-105-4043 High Flow Cat Audi B9 A4 A5 and allroad

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034Motorsport's 034-105-4043 Cast Stainless Steel Racing Catalyst is a drop-in upgrade of the restrictive factory catalytic converter. 034's Cast Stainless Steel Racing Catalyst offers increased horsepower and torque throughout the powerband, reduced turbocharger lag, improved throttle response, and an enhanced exhaust note. This upgrade eliminates the primary flow limitation in the factory exhaust system, allowing you to maximize the potential of your turbocharged engine.

Optimized for increased flow and maximum performance, the 034 Cast Stainless Steel Racing Catalyst features organic geometry and a massive 135mm diameter Euro 3 racing catalytic converter in the factory location. This complete drop-in solution includes an integrated 4-bolt flange at the turbine outlet, integrated oxygen sensor bung after the catalyst, integrated 3-bolt downpipe flange, and a complete gasket and hardware kit for easy and precise fitment.

034Motorsport 034-105-4043 High Flow Catalyst Features:

  • Factory Location 135mm Euro 3 200 CPI Racing Catalytic Converter
  • Quicker Turbocharger Spool and Faster Transient Response
  • Integrated Inlet / Outlet Flanges and O2 Sensor Bung
  • Precision CNC Machined Flange Mating Surfaces
  • Enhanced Exhaust Note and Turbocharger Sound
  • Peak Horsepower Gain: 22 CHP @ 5,650 RPM
  • Peak Torque Gain: 22 CTQ @ 2,850 RPM
  • Sand-Blasted Titanium-Look Finish
  • Cast 304 Stainless Construction
  • TIG Welded and Backpurged
  • OEM+ Fit and Finish

034Motorsport High Flow Cat Vehicle Fitment:

034Motorsport Cast High Flow Cat Manufacturing:
The 034Motorsport Stainless Race Catalyst is constructed from cast 304 stainless steel with integrated flanges which are CNC machined for flatness. A 135mm Euro 3 200 CPI catalyst is TIG-welded in between the two cast ends for maximum durability and corrosion resistance. After assembly the unit is finished to a sandblasted titanium look and then branded with a laser etched 034Motorsport logo. Gaskets and hardware are included.

034Motorsport P34 Install:
Installation of the 034Motorsport Cast Stainless Race Cat typically takes about 2-3 hours. Basic hand tools are necessary for installation. Installation instructions are available here . Please observe all safety precautions and follow proper installation guidelines while working on your vehicle.

034Motorsport exhaust components are warranted to be free from defects in the materials and workmanship prior to installation. This warranty does not cover labor, misuse, faulty installation, failure of related parts or parts purchased other than from 034Motorsport. This warranty extends to the original purchaser for as long as they own the vehicle and the product.
Typically ships within 1 business day from 034Motorsport in CA
exhaust upgrades
all exhaust
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