Description
034Motorsport High-Flow Catalytic Converters are designed to replace the restrictive factory catalytic converter, and allow for quicker spool while increasing horsepower and torque throughout the powerband.
This complete drop-in upgrade will bolt up to any stock/stock-fit turbo and stock/stock-fit exhaust system, and can provide gains of up to 24WTQ and 27WHP on stock turbo tunes.
We construct them from stainless steel tubing, and utilize a high-performance 250-cell stainless-steel-matrix cat. They feature CNC machined flanges to prevent warping and expansion, factory-correct exhaust hanger location, and 2 oxygen sensor bungs in the proper locations for the factory sensors. Full 3.5" tubing is used at the turbo outlet, with a smooth transition to 3" after the cat.
The high-flow catalytic converter is a complete drop-in upgrade; will bolt up to any stock/stock-fit turbo and stock/stock-fit exhaust. Professionally assembled in-house, TIG-welded and backpurged.
Features
- Stainless Steel Tubing
- TIG Welded
- Application-Specific Flanges
- Factory Oxygen Sensor and Exhaust Hanger Placement
- Installation Hardware Included!
- Dyno-Proven Horsepower and Torque Gains!
We've seen gains of over 24WTQ and 27WHP on our dyno on stock turbo tunes.
Dyno Graph

Compatibility
- 2009 - 2016 Audi A4 2.0 TFSI (B8/B8.5)
- 2008 - 2017 Audi A5 2.0 TFSI (B8/B8.5)
- 2008 - 2017 Audi Q5 2.0 TFSI (B8/B8.5)
- 2013 - 2016 Audi Allroad 2.0 TFSI (B8.5)
*** Direct bolt-in for OEM cat-back exhaust, or aftermarket cat-back exhaust systems designed to fit with the OEM catalytic converter. Will fit Quattro and FWD B8/B8.5 Audi A4/A5/Q5/Allroad 2.0 TFSI models equipped with Manual, Tiptronic, or CVT transmissions. Does not fit Right-Hand-Drive (RHD) vehicles.***
Warranty
All 034Motorsport products are covered by our industry-leading 1 Year Warranty against defects in materials or workmanship. The 1 Year Warranty does not cover natural discolouration or cosmetic imperfections on carbon fiber finishes which occur over time.
Manufactured by
034Motorsport
Part Number
034-105-4023





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