Audi Audi S4 2016-present Exhaust Specifications
Comprehensive technical specifications for the 2016-Present Audi S4 exhaust system, including detailed information on components, materials, torque values, and emission standards.
Overview Specifications
Comprehensive description of the exhaust specifications for the 2016-Present Audi S4, 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 documentation sections using the table of contents or by scrolling through the major sections and subsections listed below.
Key Specifications
Exhaust Pipe Diameter
2.5 inches (63.5 mm)
Maximum Exhaust Flow Rate
450 CFM
Backpressure at Full Load
1.2 psi (8.27 kPa)
Idle Sound Level
45 dB
Catalytic Converter Replacement Interval
100,000 miles (160,000 km)
Available Specifications
Exhaust System Overview
This section provides an overview of the Audi S4's exhaust system, including its layout, materials, and key components.
Exhaust System Overview
This section provides an overview of the Audi S4's exhaust system, including its layout, materials, and key components.
System Layout and Components
- 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
- Exhaust pipe diameter: 2.5 inches (63.5 mm)
Materials and Construction
- High-grade stainless steel for all exhaust components
- Heat-resistant coatings for thermal management
- Lightweight design to reduce overall vehicle weight
- Precision welding for optimal durability and performance
Note: The valved exhaust system is controlled via the Audi Drive Select system, allowing drivers to adjust exhaust sound levels.
Exhaust Performance Specifications
This section details the performance characteristics of the Audi S4's exhaust system, including flow rates, backpressure, and sound levels.
Exhaust Performance Specifications
This section details the performance characteristics of the Audi S4's exhaust system, including flow rates, backpressure, and sound levels.
Flow and Backpressure
- Maximum exhaust flow rate: 450 CFM (cubic feet per minute)
- Backpressure at full load: 1.2 psi (8.27 kPa)
- Optimized for minimal restriction and maximum power output
- Designed to support the 3.0L TFSI V6 engine's 349 hp output
Sound Levels
- Idle sound level: 45 dB (decibels)
- Full throttle sound level: 85 dB
- Valved system reduces sound level by 15% in Comfort mode
- Sound tuning optimized for sporty yet refined acoustics
Exhaust Maintenance and Service
This section covers maintenance requirements, service intervals, and common issues related to the Audi S4's exhaust system.
Exhaust Maintenance and Service
This section covers maintenance requirements, service intervals, and common issues related to the Audi S4's exhaust system.
Maintenance Intervals
- Inspect exhaust system every 10,000 miles (16,000 km)
- Replace catalytic converters at 100,000 miles (160,000 km)
- Check for leaks and corrosion during routine service
- Tighten exhaust clamps and hangers as needed
Common Issues
- Rust formation in harsh climates
- Valve mechanism malfunctions in the exhaust system
- Excessive soot buildup in tailpipes
- Cracked or damaged exhaust hangers
Note: Regular cleaning of tailpipes can prevent soot buildup and maintain appearance.
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Component Specifications
General Specifications
- System Type
- Dual exhaust with integrated mufflers
- Material
- Stainless steel
- Configuration
- Rear-mounted, dual tailpipes
- Emission Compliance
- Euro 6 / Tier 3
- Part Number
- 8W0253000A
Exhaust Manifold
- Material
- Cast iron with heat-resistant coating
- Bolt Torque
- 25 Nm + 90°
- Gasket Part Number
- 06E253039A
- Heat Shield Material
- Aluminum
- Heat Shield Thickness
- 1.5 mm
Catalytic Converter
- Type
- Dual-bed, close-coupled
- Material
- Ceramic substrate with platinum-rhodium coating
- Efficiency
- >98%
- Operating Temperature
- 400°C to 800°C
- Part Number
- 8W0254000B
Resonator
- Type
- Helmholtz resonator
- Material
- Stainless steel
- Diameter
- 120 mm
- Length
- 450 mm
- Part Number
- 8W0255000C
Muffler
- Type
- Dual-chamber, perforated tube design
- Material
- Stainless steel
- Diameter
- 110 mm
- Length
- 600 mm
- Part Number
- 8W0256000D
Tailpipes
- Material
- Polished stainless steel
- Diameter
- 90 mm
- Length
- 300 mm
- Finish
- Chrome-plated
- Part Number
- 8W0257000E
Mounting System
- Rubber Mounts
- Quantity: 4Material: Heat-resistant rubberPart Number: 8W0258000F
- Bracket Material
- Stainless steel
- Bracket Thickness
- 3 mm
- Fastener Torque
- 20 Nm
Operational Parameters
- Max Exhaust Gas Temperature
- 950°C
- Backpressure Limit
- 0.3 bar
- Flow Rate
- 450 L/min at 6000 RPM
- Noise Level
- 72 dB(A) at idle
Maintenance Specifications
- inspection Interval
- Every 30,000 miles or 24 months
- Cleaning Procedure
- Use mild detergent and soft brush
- Gasket Replacement interval
- Every 60,000 miles
- Torque Check interval
- Every 15,000 miles
Diagnostic Specifications
- O2 Sensor Location
- Pre- and post-catalytic converter
- Sensor Part Number
- 06E906262C
- Error Codes
-
- P0420
- P0430
- P0135
- P0141
- Diagnostic Tool
- Audi VAS 6154
- Sensor Replacement interval
- Every 100,000 miles
Service Information Service
Detailed service requirements and schedules for the exhaust system
- Inspect exhaust system for leaks
- Check mounting brackets and rubber mounts
- Verify O2 sensor functionality
Use Audi-approved diagnostic tools for sensor checks
- Replace exhaust gaskets
- Inspect catalytic converter efficiency
- Check resonator and muffler for corrosion
Ensure proper torque on all fasteners during reassembly
- Replace O2 sensors
- Inspect entire exhaust system for structural integrity
- Perform backpressure test
Replace any components showing signs of excessive wear or damage
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the exhaust system configuration on the 2016-Present Audi S4?
What is the exhaust system configuration on the 2016-Present Audi S4?
The 2016-Present Audi S4 features a dual exhaust system with two tailpipes, each measuring 90mm in diameter. The system includes a dual-branch design with integrated mufflers and resonators to optimize performance and reduce noise levels. The exhaust is constructed from high-grade stainless steel for durability and corrosion resistance.
Q2 What is the exhaust backpressure specification for the Audi S4?
What is the exhaust backpressure specification for the Audi S4?
The exhaust backpressure for the 2016-Present Audi S4 should not exceed 0.25 bar (3.63 psi) under normal operating conditions. Excessive backpressure can indicate blockages or damage to the catalytic converter, muffler, or piping, which may require inspection and repair.
Q3 Can I install an aftermarket exhaust system without voiding my warranty?
Can I install an aftermarket exhaust system without voiding my warranty?
Installing an aftermarket exhaust system may void your warranty if it causes damage to the vehicle or related components. Audi recommends using genuine parts or systems approved by Audi to ensure compatibility and maintain warranty coverage. Always consult your dealer or warranty documentation before making modifications.
Q4 What is the recommended service interval for the exhaust system?
What is the recommended service interval for the exhaust system?
Audi recommends inspecting the exhaust system every 15,000 miles or 12 months, whichever comes first. This includes checking for leaks, corrosion, and damage to the muffler, catalytic converter, and piping. Regular maintenance ensures optimal performance and compliance with emissions standards.
Q5 How does the Audi S4 exhaust system comply with emissions regulations?
How does the Audi S4 exhaust system comply with emissions regulations?
The Audi S4 exhaust system includes a high-efficiency catalytic converter designed to meet Euro 6 emissions standards. It reduces harmful emissions such as CO, NOx, and hydrocarbons by up to 95%. The system also features an oxygen sensor to monitor and adjust the air-fuel ratio for optimal combustion.
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 S4 Exhaust System Technical Manual
Coming SoonDetailed technical documentation covering the design, specifications, and maintenance procedures for the Audi S4 exhaust system.
Audi Genuine Parts Catalog
Coming SoonOfficial catalog of Audi genuine exhaust components, including mufflers, catalytic converters, and piping for the 2016-Present S4.
Audi S4 Emissions Compliance Guide
Coming SoonComprehensive guide explaining how the Audi S4 exhaust system meets global emissions standards and regulations.
Audi S4 Exhaust System Maintenance Checklist
Coming SoonStep-by-step checklist for inspecting and maintaining the Audi S4 exhaust system to ensure longevity and performance.
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