034 Motorsport UK - Stainless Steel Catted Downpipe - Audi B9 S4/S5 3.0 TFSI
The 034 Motorsport 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. 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 Stainless Steel Racing Catalyst features a massive 148mm diameter Euro 4 racing catalytic converter in the factory location. This complete drop-in solution includes an integrated v-band flange at the turbine outlet, integrated oxygen sensor bung after the catalyst, integrated 3-bolt downpipe flanges, and a complete gasket/hardware kit to allow for precise fitment and ease of installation. The Stainless Steel Racing Catalyst for B9 Audi S4/S5 vehicles is constructed from 304 stainless steel for maximum durability and corrosion resistance, is TIG-welded, and includes an integrated OE style heat isolation barrier to minimize exhaust heat transferred into the engine bay.
034Motorsport's Stainless Steel Racing Catalyst was developed entirely in-house on 034Motorsport's Development B9 Audi S4 utilizing the latest in 3D Scanning Technology, CAD Software, and Rapid Prototyping Techniques. Final production units were then tested extensively on track in B9 Audi S4 vehicles before release.
Features:
- Increased Horsepower & Torque Throughout the Powerband (+ 21 HP / + 33 TQ Peak)
- Quicker Turbocharger Spool & Faster Transient Response (150-300 RPM Quicker Spool)
- Enhanced Exhaust Note & Turbocharger Sounds
- Direct, Bolt-In Upgrade for Factory Catalytic Converter
- Engineered In-House by 034Motorsport's Engineering Team
- Factory-Location 148mm Euro 4 Racing Catalytic Converter
- 304 Stainless Steel Construction with Integrated Inlet/Outlet Flanges & O2 Sensor Bung
- Precision CNC-Machined Flange Mating Surfaces
- OE Style Heat Isolation Barrier
- TIG Welded & Backpurged
What's Included:
- 034Motorsport Stainless Steel Performance Downpipe
- Integrated Euro 4 Racing Catalytic Converter
- Factory Turbocharger Outlet Gasket
- Factory Catalyst to Downpipe Gaskets (2)
- M8 Locknuts (6)
- M8x30 Socket Head Cap Screws (4)
- M8 Washers (4)
034Motorsport B9 Audi S4 3.0 TFSI Race Catalyst Performance Comparisons
These Performance Comparisons were performed using an in-house 2018 Audi S4 3.0 TFSI on 91 Octane fuel.
| Factory Catalyst | 034 Race Catalyst | |
|---|---|---|
| Peak Horsepower | 304 HP | 320 HP |
| Peak Torque | 332 FT-LBS | 348 FT-LBS |
| Peak HP Gains vs. Factory Catalyst | - | 21 HP @ 5,680 RPM |
| Peak TQ Gains vs. Factory Catalyst | - | 33 FT-LBS @ 2,525 RPM |
SUPPORTED VEHICLES
- 2017 - Present Audi S4 (B9)
- 3.0 TFSI
- 2017 - Present Audi S5 (B9)
- 3.0 TFSI
The installation of your 034Motorsport Stainless Steel Racing Catalyst, B9 Audi S4/S5 for the B9 Audi S4/S5 3.0 TFSI is an moderately involved process that will take approximately three hours to complete.
The use of de-cats, sports cats are for off road/motorsport use only. Using these parts would inhibit your vehicle from passing a MOT test.
Only EC type-approved components are legal and fit for road use.
If non EC type-approved components are fitted at Awesome, the vehicle cannot be driven from our premises on the road, the vehicle will need to be recovered on a trailer to prove your intention is for off road use.
