Audi Audi S6 2018-present Exhaust Specifications
Detailed technical specifications for the 2018-Present Audi S6 exhaust system, including components, materials, dimensions, and performance data. Ideal for technicians and enthusiasts.
Overview Specifications
Comprehensive description of the exhaust specifications for the 2018-Present Audi S6, including key features, measurements, and technical details. This section provides detailed insights into the exhaust system's design, components, and performance characteristics.
How to Use
Use the search function to locate specific exhaust specifications by entering keywords such as 'catalytic converter,' 'muffler,' or 'exhaust pipe diameter.'
Navigate through the exhaust documentation sections using the table of contents or by scrolling through the document. Each section is clearly labeled for easy access.
Key Specifications
Exhaust Pipe Diameter
70mm
Catalytic Converter Temperature
400°C to 800°C
Exhaust Flow Rate
450 CFM
Backpressure at Full Load
1.2 psi
Idle Sound Level
45 dB
Available Specifications
Exhaust System Overview
This section provides an overview of the Audi S6's exhaust system, including its layout, materials, and key components.
Exhaust System Overview
This section provides an overview of the Audi S6's exhaust system, including its layout, materials, and key components.
System Layout
- Dual exhaust system with quad tailpipes
- Stainless steel construction for durability and corrosion resistance
- Integrated catalytic converters for emissions control
- Valved exhaust system for adjustable sound profiles
Materials and Construction
- High-grade stainless steel used for exhaust pipes and mufflers
- Aluminized steel heat shields for thermal protection
- TIG welding for precision and strength
- Ceramic-coated exhaust tips for enhanced aesthetics
Note: The valved exhaust system is controlled via the Audi Drive Select system, allowing drivers to adjust exhaust sound levels.
Exhaust Components
Detailed breakdown of the major components of the Audi S6 exhaust system, including specifications and functions.
Exhaust Components
Detailed breakdown of the major components of the Audi S6 exhaust system, including specifications and functions.
Catalytic Converters
- Dual catalytic converters for each bank of the V6 engine
- Ceramic honeycomb substrate with precious metal coating
- Oxygen sensor integration for optimal emissions control
- Operating temperature range: 400°C to 800°C
Mufflers and Resonators
- Twin mufflers with integrated resonators
- Sound-dampening materials for reduced noise levels
- Valve-controlled exhaust flaps for dynamic sound tuning
- Muffler dimensions: 600mm x 300mm x 200mm
Performance Specifications
Technical specifications related to the exhaust system's performance, including flow rates, backpressure, and sound levels.
Performance Specifications
Technical specifications related to the exhaust system's performance, including flow rates, backpressure, and sound levels.
Flow and Backpressure
- Exhaust gas flow rate: 450 CFM (cubic feet per minute)
- Backpressure at full load: 1.2 psi
- Optimized pipe diameter: 70mm
- Pressure drop across catalytic converters: 0.5 psi
Sound Levels
- Idle sound level: 45 dB
- Full throttle sound level: 85 dB
- Valved exhaust system reduces sound by 15 dB in Comfort mode
- Sound tuning compliant with EU noise regulations
Note: Sound levels are measured at a distance of 1 meter from the exhaust tips.
Maintenance and Service
Guidelines for maintaining and servicing the Audi S6 exhaust system, including inspection intervals and common issues.
Maintenance and Service
Guidelines for maintaining and servicing the Audi S6 exhaust system, including inspection intervals and common issues.
Inspection Intervals
- Inspect exhaust system every 15,000 miles or 12 months
- Check for leaks, corrosion, and loose components
- Verify proper operation of exhaust valves
- Inspect catalytic converters for damage or clogging
Common Issues
- Corrosion at pipe joints and hangers
- Exhaust valve motor failure in extreme conditions
- Cracked or damaged heat shields
- Reduced performance due to clogged catalytic converters
Note: Regular cleaning of exhaust tips is recommended to maintain appearance.
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Component Specifications
General Specifications
- System Type
- Dual exhaust with integrated mufflers and resonators
- Material
- Stainless steel with chrome-plated tips
- Configuration
- Quad exhaust tips
- Emission Compliance
- Euro 6 and EPA Tier 3 compliant
- Part Number
- 4G0253609A
Exhaust Manifold
- Material
- Cast iron with heat-resistant coating
- Bolt Torque
- 25 Nm + 90°
- Gasket Part Number
- 06E198127A
- Heat Shield Material
- Aluminum with ceramic coating
- Connection Type
- Flanged connection to turbocharger
Catalytic Converter
- Type
- Dual three-way catalytic converters
- Material
- Ceramic substrate with platinum-rhodium-palladium coating
- Part Number
- 4G0254101B
- Operating Temperature
- 400°C to 800°C
- Efficiency
- >95% reduction in CO, HC, and NOx emissions
Resonators
- Quantity
- 2
- Material
- Stainless steel with perforated inner tube
- Part Number
- 4G0252609C
- Diameter
- 80 mm
- Length
- 450 mm
Mufflers
- Quantity
- 2
- Material
- Stainless steel with sound-absorbing fiberglass
- Part Number
- 4G0253609A
- Diameter
- 90 mm
- Length
- 600 mm
- Noise Reduction
- Up to 20 dB at 3000 RPM
Exhaust Tips
- Quantity
- 4
- Material
- Polished stainless steel with chrome finish
- Part Number
- 4G0253609B
- Diameter
- 100 mm
- Length
- 150 mm
- installation Torque
- 15 Nm
Exhaust Pipes
- Material
- Stainless steel with mandrel bends
- Diameter
- 70 mm
- Wall Thickness
- 1.5 mm
- Part Number
- 4G0252609D
- Connection Type
- Clamped and welded joints
Sensors
- Oxygen Sensors
- Quantity: 4Type: Wideband zirconia sensorsPart Number: 06E906262COperating Temperature: -40°C to 900°CResponse Time: <100 ms
- Temperature Sensors
- Quantity: 2Type: NTC thermistorsPart Number: 4G0907641AOperating Temperature: -40°C to 1000°CAccuracy: ±2°C
Operational Parameters
- Max Exhaust Gas Temperature
- 950°C
- Max Back Pressure
- 0.3 bar
- Recommended Cleaning Interval
- Every 30,000 miles
- Warranty Coverage
- 8 years or 80,000 miles
Diagnostic Specifications
- Fault Codes
-
- P0420 - Catalyst System Efficiency Below Threshold
- P0430 - Catalyst System Efficiency Below Threshold (Bank 2)
- P0135 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
- P0141 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
- Diagnostic Tools
-
- VCDS (VAG-COM Diagnostic System)
- ODIS (Offboard Diagnostic Information System)
- inspection Procedures
-
- Check for exhaust leaks using smoke machine
- Verify sensor readings with diagnostic tool
- Inspect catalytic converter for physical damage
Service Information Service
Detailed service requirements and schedules for the exhaust system
- Inspect exhaust system for leaks and damage
- Check oxygen sensor functionality
- Verify catalytic converter efficiency
Use Audi-approved diagnostic tools for accurate readings
- Clean exhaust tips to prevent corrosion
- Inspect and tighten all exhaust clamps
- Check resonator and muffler for internal damage
Replace gaskets if any signs of leakage are detected
- Replace oxygen sensors as preventive maintenance
- Inspect and clean catalytic converter
- Check exhaust hangers and mounts for wear
Follow Audi's torque specifications for all fasteners
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the exhaust system configuration for the 2018-Present Audi S6?
What is the exhaust system configuration for the 2018-Present Audi S6?
The 2018-Present Audi S6 features a dual exhaust system with quad tailpipes. It includes a high-performance catalytic converter, resonators, and a valved exhaust system that adjusts based on driving mode (Comfort, Dynamic, or Individual). The system is designed to optimize exhaust flow and reduce backpressure, enhancing performance and sound.
Q2 What is the diameter of the exhaust pipes on the Audi S6?
What is the diameter of the exhaust pipes on the Audi S6?
The primary exhaust pipes on the Audi S6 have a diameter of 70 mm (2.75 inches), while the tailpipes are 90 mm (3.54 inches) in diameter. These dimensions are optimized for the 2.9-liter TFSI V6 engine's exhaust flow requirements.
Q3 Does the Audi S6 exhaust system include a particulate filter?
Does the Audi S6 exhaust system include a particulate filter?
Yes, the Audi S6 exhaust system includes a gasoline particulate filter (GPF) as part of its emissions control system. This filter reduces particulate emissions and complies with Euro 6d-TEMP and Euro 6d emissions standards.
Q4 How does the valved exhaust system work on the Audi S6?
How does the valved exhaust system work on the Audi S6?
The valved exhaust system on the Audi S6 uses electronically controlled flaps that open or close based on the selected driving mode and engine load. In Comfort mode, the valves remain closed for quieter operation, while in Dynamic mode, they open fully to enhance exhaust flow and produce a more aggressive sound.
Q5 What is the recommended maintenance schedule for the Audi S6 exhaust system?
What is the recommended maintenance schedule for the Audi S6 exhaust system?
Audi recommends inspecting the exhaust system every 15,000 miles or annually, whichever comes first. Key checks include inspecting for leaks, corrosion, and ensuring the valved system operates correctly. Replacements of components like the catalytic converter or particulate filter should only be performed using genuine Audi parts.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Audi S6 Exhaust System Technical Overview
Coming SoonDetailed technical guide covering the design, components, and functionality of the Audi S6 exhaust system.
Audi S6 Exhaust Maintenance Procedures
Coming SoonStep-by-step instructions for inspecting and maintaining the exhaust system, including valve operation and particulate filter care.
Audi Genuine Parts Catalog - Exhaust Components
Coming SoonOfficial catalog of genuine Audi exhaust components, including part numbers and compatibility details for the S6.
Audi S6 Emissions Compliance Guide
Coming SoonComprehensive guide to the emissions control systems in the Audi S6, including the gasoline particulate filter and catalytic converter.
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