Audi Audi RS4 2018-present Exhaust Specifications
Detailed technical specifications for the 2018-Present Audi RS4 exhaust system, including component details, materials, dimensions, and performance data. Ideal for technicians, enthusiasts, and repair professionals.
Overview Specifications
Comprehensive description of the exhaust specifications for the 2018-Present Audi RS4, including key features, measurements, and technical details. This section covers the design, materials, performance, and maintenance aspects of the exhaust system.
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Use the search function to locate specific exhaust specifications by entering keywords such as 'catalytic converter,' 'muffler,' or 'exhaust diameter.'
Navigate through the exhaust documentation sections using the table of contents or by scrolling through the major sections and subsections.
Key Specifications
Exhaust Diameter
70 mm (2.75 in)
System Weight
22.5 kg (49.6 lbs)
Catalytic Converter Temp
400°C - 800°C (752°F - 1472°F)
Sound Pressure Level
95 dB
Valve Diameter
60 mm (2.36 in)
Available Specifications
Exhaust System Design
Details about the design and layout of the Audi RS4 exhaust system, including component placement and integration with the vehicle's drivetrain.
Exhaust System Design
Details about the design and layout of the Audi RS4 exhaust system, including component placement and integration with the vehicle's drivetrain.
Exhaust Layout
- Dual exhaust system with quad tailpipes
- Stainless steel construction for durability
- Integrated valved exhaust system for adjustable sound
- Exhaust diameter: 70 mm (2.75 in)
- Optimized for minimal backpressure
Valved Exhaust System
- Electronically controlled exhaust valves
- Two modes: Comfort and Dynamic
- Valve diameter: 60 mm (2.36 in)
- Actuator response time: < 300 ms
- Note: Valves default to open in Dynamic mode
Note: Valve operation can be customized via Audi Drive Select.
Exhaust Materials and Construction
Information about the materials used in the exhaust system and their impact on performance and longevity.
Exhaust Materials and Construction
Information about the materials used in the exhaust system and their impact on performance and longevity.
Material Specifications
- Primary material: T304 stainless steel
- Heat-resistant coating for thermal management
- Weight: 22.5 kg (49.6 lbs) for the complete system
- Corrosion-resistant design for all-weather use
- Note: Material tested for temperatures up to 900°C (1652°F)
Catalytic Converter
- Dual catalytic converters for each bank
- Ceramic substrate with 400 cells per square inch
- Operating temperature range: 400°C - 800°C (752°F - 1472°F)
- Emissions compliance: Euro 6 standards
- Note: Catalytic converters are integrated into the downpipes
Performance and Sound
Technical details about the exhaust system's impact on performance and sound characteristics.
Performance and Sound
Technical details about the exhaust system's impact on performance and sound characteristics.
Performance Impact
- Backpressure reduction: 15% compared to previous models
- Power gain: 5-7 HP due to optimized flow
- Torque improvement: 10 Nm (7.4 lb-ft) at mid-range RPM
- Exhaust gas temperature: 650°C (1202°F) under full load
- Note: Performance gains are most noticeable in Dynamic mode
Sound Characteristics
- Sound pressure level: 95 dB at full throttle
- Frequency range: 80 Hz - 400 Hz
- Active sound tuning via Audi Sound System
- Note: Sound can be further customized via aftermarket tuning
Note: Sound levels comply with EU noise regulations.
Maintenance and Service
Guidelines for maintaining and servicing the Audi RS4 exhaust system.
Maintenance and Service
Guidelines for maintaining and servicing the Audi RS4 exhaust system.
Inspection Intervals
- Inspect exhaust system every 15,000 km (9,320 miles)
- Check for leaks, corrosion, and valve operation
- Replace gaskets and seals as needed
- Note: Regular cleaning recommended for stainless steel components
Replacement Parts
- OEM exhaust system part number: 8W0253100
- Catalytic converter part number: 8W0254100
- Valve actuator part number: 8W0255100
- Note: Use only Audi-approved replacement parts
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Component Specifications
General Specifications
- Material
- Stainless steel
- System Type
- Dual exhaust with quad tips
- Configuration
- Rear-mounted
- Emission Compliance
- Euro 6d-TEMP
- Weight
- 28.5 kg
Exhaust Manifold
- Material
- Cast iron
- Part Number
- 06E253033H
- Bolt Torque
- 25 Nm + 90°
- Gasket Part Number
- 06E253119A
- Heat Shield Material
- Aluminized steel
Catalytic Converters
- Type
- Dual catalytic converters
- Part Number
- 8W0254100A
- Substrate Material
- Ceramic
- Pre Cat Part Number
- 8W0254101B
- Main Cat Part Number
- 8W0254102C
- Operating Temperature
- 400-800°C
Resonators
- Type
- Dual resonators
- Part Number
- 8W0253100D
- Material
- Stainless steel
- Diameter
- 76.2 mm
- Length
- 450 mm
Mufflers
- Type
- Dual mufflers with valve control
- Part Number
- 8W0253200E
- Material
- Stainless steel
- Valve Actuation
- Electronically controlled
- Sound Level Idle
- 72 dB
- Sound Level Full Throttle
- 95 dB
Exhaust Tips
- Material
- Polished stainless steel
- Part Number
- 8W0253500F
- Diameter
- 90 mm
- Length
- 120 mm
- Finish
- Chrome-plated
Exhaust Valve System
- Type
- Electronically controlled exhaust flaps
- Part Number
- 8W0253600G
- Actuator Type
- Electric motor
- Operating Voltage
- 12 V
- Response Time
- 0.5 seconds
Exhaust Pipes
- Material
- Stainless steel
- Diameter
- 63.5 mm
- Wall Thickness
- 1.5 mm
- Flex Pipe Part Number
- 8W0253700H
- Clamp Part Number
- N90765301
Mounting And Support
- Hanger Material
- Rubber with steel core
- Hanger Part Number
- 8W0253800J
- Bracket Part Number
- 8W0253900K
- Bolt Torque
- 40 Nm
- Vibration Damping
- Yes
Diagnostic Specifications
- O2 Sensor Part Number
- 06E906262Q
- O2 Sensor Type
- Wideband
- O2 Sensor Location
- Pre-cat and post-cat
- Error Codes
-
- P0420
- P0430
- P0135
- Diagnostic Tool
- ODIS (Offboard Diagnostic Information System)
Service Information Service
Detailed service requirements and schedules for the exhaust system
- Inspect exhaust system for leaks
- Check exhaust hangers and brackets
- Inspect catalytic converters for damage
Replace gaskets if any leaks are detected
- Inspect and clean exhaust tips
- Check exhaust valve operation
- Inspect O2 sensors for proper function
Use Audi-approved cleaning products for exhaust tips
- Replace O2 sensors
- Inspect and replace exhaust hangers if necessary
- Check exhaust system alignment
Ensure proper torque specifications during reassembly
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the exhaust system configuration on the 2018-Present Audi RS4?
What is the exhaust system configuration on the 2018-Present Audi RS4?
The 2018-Present Audi RS4 features a dual exhaust system with quad tailpipes. It includes a sport exhaust system with electronically controlled exhaust flaps, which adjust the sound profile based on driving mode. The system is designed to optimize backpressure and enhance performance, with a diameter of 70mm for the main pipes.
Q2 What materials are used in the Audi RS4 exhaust system?
What materials are used in the Audi RS4 exhaust system?
The exhaust system is constructed from high-grade stainless steel to ensure durability and resistance to corrosion. The tailpipes are finished with a polished chrome or black optic coating, depending on the trim and optional packages selected.
Q3 How does the exhaust valve system work on the Audi RS4?
How does the exhaust valve system work on the Audi RS4?
The Audi RS4 utilizes an electronically controlled exhaust valve system. The valves open or close based on the selected drive mode (Comfort, Dynamic, or Individual) and engine load. In Dynamic mode, the valves remain open to produce a more aggressive exhaust note, while in Comfort mode, they partially close to reduce noise levels.
Q4 What is the backpressure specification for the Audi RS4 exhaust system?
What is the backpressure specification for the Audi RS4 exhaust system?
The exhaust system is engineered to maintain optimal backpressure levels of approximately 0.8-1.2 bar under full load conditions. This ensures efficient exhaust gas flow and supports the engine's performance output of 450 PS and 600 Nm of torque.
Q5 Can the Audi RS4 exhaust system be modified for aftermarket performance?
Can the Audi RS4 exhaust system be modified for aftermarket performance?
While aftermarket modifications are possible, they may void the vehicle's warranty and affect emissions compliance. Audi recommends using genuine parts or approved aftermarket components to maintain performance and safety standards. Any modifications should be performed by certified professionals to avoid damage to the engine or exhaust system.
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 RS4 Exhaust System Technical Overview
Coming SoonDetailed technical documentation on the design, materials, and functionality of the Audi RS4 exhaust system.
Exhaust Valve System Operation Guide
Coming SoonA step-by-step guide to understanding and operating the electronically controlled exhaust valve system in the Audi RS4.
Audi Genuine Exhaust Parts Catalog
Coming SoonAccess the official catalog of genuine Audi exhaust components for the RS4, including replacement parts and optional upgrades.
Audi RS4 Exhaust Maintenance Schedule
Coming SoonLearn about the recommended maintenance intervals and procedures for the Audi RS4 exhaust system to ensure longevity and performance.
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