Audi Audi RS4 2005-2008 Exhaust Specifications
Detailed technical specifications and documentation for the 2005-2008 Audi RS4 exhaust system, including exhaust manifold, catalytic converters, mufflers, and tailpipes. Ideal for technicians and enthusiasts.
Overview Specifications
Comprehensive description of the exhaust specifications for the 2005-2008 Audi RS4, 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 diameter.'
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Key Specifications
Exhaust Diameter
70 mm (2.75 in)
Maximum Backpressure
0.25 bar (3.63 psi)
Sound Level at Full Throttle
95 dB
Catalytic Converter Lifespan
100,000 miles (160,000 km)
Exhaust Flow Rate
450 CFM
Available Specifications
Exhaust System Overview
This section provides an overview of the Audi RS4's exhaust system, including its layout, materials, and key components.
Exhaust System Overview
This section provides an overview of the Audi RS4's exhaust system, including its layout, materials, and key components.
Exhaust Layout and Configuration
- Dual exhaust system with quad tailpipes
- Stainless steel construction for durability and corrosion resistance
- Exhaust diameter: 70 mm (2.75 in)
- Optimized for high-performance V8 engine output
Key Components
- Two catalytic converters for emissions control
- Resonators and mufflers for noise reduction
- Exhaust tips with chrome finish
- Heat shields for thermal management
Note: The catalytic converters are designed to meet Euro 4 emissions standards.
Performance Specifications
This section details the performance-related specifications of the exhaust system, including backpressure, flow rates, and sound levels.
Performance Specifications
This section details the performance-related specifications of the exhaust system, including backpressure, flow rates, and sound levels.
Backpressure and Flow Rates
- Maximum backpressure: 0.25 bar (3.63 psi)
- Exhaust flow rate: 450 CFM (cubic feet per minute)
- Optimized for 420 hp engine output
- Reduced restriction for improved throttle response
Sound Characteristics
- Sound level at idle: 75 dB
- Sound level at full throttle: 95 dB
- Deep, sporty exhaust note
- Resonator tuning for minimal drone
Note: Sound levels measured at 1 meter from the exhaust tips.
Maintenance and Service
This section covers maintenance requirements, service intervals, and common issues related to the exhaust system.
Maintenance and Service
This section covers maintenance requirements, service intervals, and common issues related to the exhaust system.
Service Intervals
- Inspect exhaust system every 15,000 miles (24,000 km)
- Replace catalytic converters at 100,000 miles (160,000 km)
- Check for leaks and corrosion during routine maintenance
- Tighten exhaust clamps as needed
Common Issues
- Corrosion at weld joints over time
- Rattling due to loose heat shields
- Reduced performance from clogged catalytic converters
- Excessive noise from damaged mufflers
Note: Regular inspections can prevent costly repairs.
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Component Specifications
General Specifications
- System Type
- Dual exhaust with quad tips
- Material
- Stainless steel
- Configuration
- Rear-mounted mufflers with dual pipes
- Emission Compliance
- Euro 4
- Part Number
- 8E0253609BX
Exhaust Manifold
- Material
- Cast iron
- Bolt Torque
- 25 Nm + 90°
- Gasket Part Number
- 06E253039A
- Heat Shield Material
- Aluminized steel
- Heat Shield Thickness
- 1.5 mm
Catalytic Converters
- Type
- Dual catalytic converters
- Material
- Ceramic substrate with platinum-rhodium coating
- Efficiency
- >95%
- Part Number
- 8E0254605A
- Temperature Range
- 400°C to 800°C
- Backpressure Limit
- 0.3 bar
Resonators
- Type
- Dual resonators
- Material
- Stainless steel
- Diameter
- 70 mm
- Length
- 400 mm
- Part Number
- 8E0253609C
Mufflers
- Type
- Dual rear mufflers
- Material
- Stainless steel
- Diameter
- 90 mm
- Length
- 600 mm
- Part Number
- 8E0253609D
- Sound Level
- 74 dB at 3000 RPM
Exhaust Pipes
- Material
- Stainless steel
- Diameter
- 70 mm
- Wall Thickness
- 1.5 mm
- Flex Pipe Part Number
- 8E0253609E
- Clamp Part Number
- N90664701
Exhaust Tips
- Material
- Polished stainless steel
- Diameter
- 100 mm
- Length
- 150 mm
- Part Number
- 8E0253609F
- Finish
- Chrome-plated
Mounting System
- Rubber Mounts Part Number
- 8E0253609G
- Bracket Material
- Steel
- Bracket Thickness
- 3 mm
- Bolt Torque
- 22 Nm
- Alignment Tolerance
- ±2 mm
Operational Parameters
- Max Exhaust Gas Temperature
- 950°C
- Max Backpressure
- 0.5 bar
- Recommended Cleaning Interval
- Every 30,000 miles
- inspection Interval
- Every 15,000 miles
Diagnostic Specifications
- OBD2 Monitoring
- Catalyst efficiency, oxygen sensors
- Backpressure Test Limit
- 0.4 bar
- Leak Test Method
- Smoke test
- Sensor Part Number
- 06A906262A
Service Information Service
Detailed service requirements and schedules for the exhaust system
- Inspect exhaust system for leaks
- Check mounting brackets and rubber mounts
- Inspect catalytic converter efficiency
Use Audi-approved diagnostic tools for OBD2 checks
- Clean exhaust tips
- Inspect and tighten all clamps
- Check for corrosion on stainless steel components
Replace worn rubber mounts if necessary
- Perform backpressure test
- Inspect and replace gaskets if needed
- Check heat shields for damage
Replace catalytic converter if efficiency drops below 90%
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the diameter of the exhaust pipes on the 2005-2008 Audi RS4?
What is the diameter of the exhaust pipes on the 2005-2008 Audi RS4?
The exhaust system on the 2005-2008 Audi RS4 features dual exhaust pipes with a diameter of 70 mm (2.75 inches) each. This design ensures optimal exhaust flow and performance for the 4.2L V8 engine.
Q2 What type of catalytic converters are used in the RS4 exhaust system?
What type of catalytic converters are used in the RS4 exhaust system?
The 2005-2008 Audi RS4 is equipped with high-flow metallic catalytic converters, which are designed to meet strict emissions standards while maintaining performance. Each converter has a 400-cell count per square inch for efficient exhaust gas treatment.
Q3 What is the material used for the RS4 exhaust system?
What is the material used for the RS4 exhaust system?
The exhaust system is constructed from high-quality stainless steel, which provides excellent corrosion resistance and durability. The mufflers and tips are also made from polished stainless steel for a premium finish.
Q4 Does the RS4 exhaust system include a valved muffler?
Does the RS4 exhaust system include a valved muffler?
Yes, the 2005-2008 Audi RS4 features a dual-mode exhaust system with valved mufflers. The valves open under higher engine loads to reduce backpressure and enhance sound, while remaining closed at lower RPMs for quieter operation.
Q5 What is the backpressure specification for the RS4 exhaust system?
What is the backpressure specification for the RS4 exhaust system?
The backpressure in the RS4 exhaust system is designed to be less than 0.5 bar (7.25 psi) at full throttle. This ensures minimal restriction and optimal engine performance.
Q6 Can aftermarket exhaust systems void the vehicle's warranty?
Can aftermarket exhaust systems void the vehicle's warranty?
Installing an aftermarket exhaust system may void the warranty on related components, such as the engine or emissions system. Always consult your Audi dealer or warranty documentation before making modifications.
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 Manual
Coming SoonOfficial technical documentation detailing the exhaust system components, specifications, and maintenance procedures for the 2005-2008 Audi RS4.
Exhaust System Maintenance Guide
Coming SoonStep-by-step guide for inspecting, cleaning, and maintaining the RS4 exhaust system to ensure longevity and performance.
Audi Genuine Parts Catalog
Coming SoonAccess the official Audi parts catalog to find genuine replacement components for the RS4 exhaust system.
Exhaust System Warranty Information
Coming SoonDetailed information on warranty coverage for the RS4 exhaust system and the implications of aftermarket modifications.
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