The 034Motorsport Stainless Steel Racing Catalyst for B9 Audi S4/S5 is designed as a drop-in replacement for the restrictive factory catalytic converter. The Stainless Steel Racing Catalyst offers increased horsepower and torque throughout the powerband, reduced turbocharger lag, improved throttle response, and an enhanced exhaust note.
Part Features
- 034Motorsport 034-105-4045 stainless steel racing catalyst for B9 Audi S4 and S5
- Drop in stainless steel high flow catalytic converter to increase horsepower and torque throughout powerband, reduce turbo lag time, increase throttle response, and enhance exhaust sound
- Provides 21 HP increase at 5680 RPM and 33FT-LBS TQ increase at 2525 RPM
- Manufactured of 304 stainless steel for prolonged life with factory style bung for O2 sensor installation
- Includes (1)integrated Euro 4 racing catalytic converters, (1) 034 Motorsport stainless steel performance downpipe, (1) turbo outlet gasket, (2) catalyst to downpipe gaskets, (6) M8 lock nuts, (4) M8x30 cap screws, (4) M8 washers
- Fits Audi S4 3.0L TFSI V6 2018-2022 and S5 3.0L TFSI V6 2018-2022
- For track use only, not legal for emissions controlled highway and street vehicles
Emissions Disclaimer:
This product is sold for off-road use only. By purchasing this product, you understand this product is sold for competition use and is not legal for use in highway or street vehicles. This product will cause a check engine light (MIL) on the stock factory tuning. A racing ECU calibration for offroad use only is required to eliminate the check engine light.
“Left/Right or Front/Rear” notes means the part fits the left or right side of the car. These parts are still sold individually and you’ll
need to select the appropriate quantity if you plan to replace more than one of this item.
WARNING:
This product can expose you to chemicals, which are known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov.

















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