Audi Audi TT 1998-2006 Exhaust Specifications
Detailed technical specifications and documentation for the 1998-2006 Audi TT exhaust system. Learn about exhaust components, torque specs, and installation guidelines for the Audi TT.
Overview Specifications
Comprehensive description of the exhaust specifications for the 1998-2006 Audi TT, including key features, measurements, and technical details. This section provides detailed information on the exhaust system's components, materials, and performance specifications.
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 major sections and subsections.
Key Specifications
Exhaust Pipe Diameter
50 mm (1.97 in)
Catalytic Converter Efficiency
Up to 95%
Maximum Flow Rate
450 CFM
Backpressure at 6000 RPM
1.2 psi
Idle Noise Level
65 dB
Available Specifications
Exhaust System Components
Detailed breakdown of the major components of the Audi TT exhaust system, including materials, dimensions, and functional roles.
Exhaust System Components
Detailed breakdown of the major components of the Audi TT exhaust system, including materials, dimensions, and functional roles.
Exhaust Manifold
- Material: Cast iron with heat-resistant coating
- Diameter: 50 mm (1.97 in)
- Designed for optimal exhaust gas flow
- Includes integrated oxygen sensor port
- Heat shield included for thermal protection
Catalytic Converter
- Type: Three-way catalytic converter
- Material: Stainless steel housing with ceramic substrate
- Dimensions: 200 mm (7.87 in) length, 120 mm (4.72 in) diameter
- Efficiency: Reduces emissions by up to 95%
- OBD-II compliant for emission standards
Note: Ensure proper functioning of the oxygen sensors for optimal catalytic converter performance.
Muffler and Tailpipe
- Material: Stainless steel with polished finish
- Muffler dimensions: 400 mm (15.75 in) length, 200 mm (7.87 in) width
- Tailpipe diameter: 70 mm (2.76 in)
- Designed for noise reduction and backpressure optimization
- Includes dual exhaust tips for sporty appearance
Exhaust System Performance
Technical details on the performance characteristics of the Audi TT exhaust system, including flow rates, backpressure, and noise levels.
Exhaust System Performance
Technical details on the performance characteristics of the Audi TT exhaust system, including flow rates, backpressure, and noise levels.
Exhaust Flow Rate
- Maximum flow rate: 450 CFM (cubic feet per minute)
- Optimized for 1.8L turbocharged engine
- Backpressure: 1.2 psi at 6000 RPM
- Designed for minimal restriction
- Supports up to 225 horsepower output
Noise Levels
- Idle noise level: 65 dB
- Full throttle noise level: 85 dB
- Complies with EU noise regulations
- Tuned for sporty yet refined sound
- Includes resonator for additional noise reduction
Exhaust System Maintenance
Guidelines for maintaining the Audi TT exhaust system, including inspection intervals, common issues, and replacement recommendations.
Exhaust System Maintenance
Guidelines for maintaining the Audi TT exhaust system, including inspection intervals, common issues, and replacement recommendations.
Inspection Intervals
- Inspect exhaust system every 15,000 miles (24,000 km)
- Check for rust, cracks, and leaks
- Verify oxygen sensor functionality
- Inspect mounting brackets and hangers
- Ensure proper alignment of exhaust components
Common Issues
- Rust formation in high-humidity environments
- Cracked exhaust manifold due to thermal stress
- Catalytic converter clogging from oil or coolant contamination
- Loose or damaged hangers causing rattling
- Excessive noise due to muffler damage
Note: Address any exhaust leaks immediately to prevent performance degradation and emission issues.
Search Specifications
Search by specification name, value, or description
Type to search through torque specifications. Results will appear below as you type.
Component Specifications
General Specifications
- Material
- Stainless steel
- System Type
- Dual exhaust with rear muffler
- Emission Compliance
- Euro 3
- Catalyst Type
- Three-way catalytic converter
- Part Number
- 8N0253600A
Exhaust Manifold
- Material
- Cast iron
- Bolt Torque
- 25 Nm
- Gasket Part Number
- 06A253139A
- Heat Shield Material
- Aluminized steel
- Heat Shield Thickness
- 1.5 mm
Catalytic Converter
- Type
- Three-way catalytic converter
- Substrate Material
- Ceramic
- Cell Density
- 400 cells per square inch
- Efficiency
- >95%
- Part Number
- 8N0253605B
- Operating Temperature
- 400-800°C
Exhaust Pipes
- Diameter
- 60 mm
- Material
- Stainless steel
- Wall Thickness
- 1.2 mm
- Flex Pipe Length
- 150 mm
- Flex Pipe Material
- Stainless steel braided
Muffler
- Type
- Rear-mounted dual muffler
- Material
- Stainless steel
- internal Baffles
- 3
- Part Number
- 8N0253609C
- Sound Level
- 72 dB at 3000 RPM
Oxygen Sensors
- Pre Cat Sensor Part Number
- 06A906262B
- Post Cat Sensor Part Number
- 06A906262C
- Sensor Type
- Zirconia
- Operating Temperature
- -40 to 900°C
- Response Time
- <100 ms
Mounting And Hangers
- Rubber Mount Material
- Heat-resistant rubber
- Mount Bolt Torque
- 20 Nm
- Hanger Spacing
- 800 mm
- Hanger Material
- Steel with rubber coating
Emission Control
- EGR System
- Integrated
- PCV System
- Closed-loop
- Evaporative Emission Control
- Yes
- Emission Test interval
- Every 2 years or 30,000 miles
Performance Parameters
- Back Pressure
- <0.5 bar at 6000 RPM
- Exhaust Gas Temperature
- Max 950°C
- Flow Rate
- 120 liters per second at 6000 RPM
Diagnostic Specifications
- OBD2 Compliance
- Yes
- Fault Codes
-
- P0420
- P0430
- P0135
- P0141
- Diagnostic Tool
- VAG-COM or equivalent
- Sensor Check interval
- Every 15,000 miles
Service Information Service
Detailed service requirements and schedules for the exhaust system
- Inspect exhaust system for leaks
- Check oxygen sensor operation
- Inspect catalytic converter for damage
Replace oxygen sensors if fault codes are present
- Replace exhaust gaskets
- Inspect and tighten all mounting bolts
- Check muffler and pipes for corrosion
Use only OEM parts for replacements
- Replace catalytic converter if efficiency drops below 90%
- Inspect and replace flex pipe if necessary
- Check heat shields for integrity
Perform emission test after replacement
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the diameter of the exhaust pipe for a 1998-2006 Audi TT?
What is the diameter of the exhaust pipe for a 1998-2006 Audi TT?
The exhaust pipe diameter for the 1998-2006 Audi TT varies by model and trim. For the 1.8T engine, the diameter is typically 60mm (2.36 inches), while the 3.2L V6 model has a 70mm (2.76 inches) diameter. Always verify with your specific vehicle's documentation.
Q2 What type of catalytic converter is used in the 1998-2006 Audi TT?
What type of catalytic converter is used in the 1998-2006 Audi TT?
The 1998-2006 Audi TT is equipped with a three-way catalytic converter, which reduces nitrogen oxides (NOx), carbon monoxide (CO), and hydrocarbons (HC). The 1.8T engine uses a single catalytic converter, while the 3.2L V6 model has dual catalytic converters.
Q3 What is the recommended exhaust system maintenance schedule for the Audi TT?
What is the recommended exhaust system maintenance schedule for the Audi TT?
Audi recommends inspecting the exhaust system every 15,000 miles or 12 months, whichever comes first. Check for rust, leaks, and loose components. Replace worn-out parts, such as gaskets and hangers, and ensure the catalytic converter is functioning properly to maintain emissions compliance.
Q4 Can I install an aftermarket exhaust system on my Audi TT without voiding the warranty?
Can I install an aftermarket exhaust system on my Audi TT without voiding the warranty?
Installing an aftermarket exhaust system may void your warranty if it causes damage to other components or affects emissions compliance. Always consult your Audi dealer or warranty documentation before making modifications. Using genuine Audi parts is recommended to avoid warranty issues.
Q5 What is the backpressure specification for the Audi TT exhaust system?
What is the backpressure specification for the Audi TT exhaust system?
The backpressure for the 1998-2006 Audi TT exhaust system should not exceed 0.5 psi at idle and 2.5 psi at 2,500 RPM. Excessive backpressure can indicate a blockage, such as a clogged catalytic converter or muffler, and should be addressed immediately.
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 TT Exhaust System Repair Manual
Coming SoonOfficial repair manual for the 1998-2006 Audi TT exhaust system, including step-by-step instructions for removal, installation, and troubleshooting.
Audi Genuine Exhaust Parts Catalog
Coming SoonCatalog of genuine Audi exhaust components for the 1998-2006 TT, including part numbers and compatibility information.
Audi TT Emissions Compliance Guide
Coming SoonGuide to understanding emissions regulations and ensuring your Audi TT exhaust system complies with local laws.
Audi TT Exhaust System Maintenance Tips
Coming SoonTips and best practices for maintaining your Audi TT exhaust system to ensure longevity and performance.
About the Author
Expert automotive knowledge and experience
'/%3E%3Cpath d='M60 30a20 20 0 1 1 0 40 20 20 0 0 1 0-40zm0 45c16.5 0 30 7.5 30 16.8V100H30v-8.2c0-9.3 13.5-16.8 30-16.8z' fill='%23404040'/%3E%3C/svg%3E)
Diagnostic
Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.
Repair
Expert in both traditional mechanical repairs and modern vehicle systems.
Additional Expertise
Documentation
Created over 500 detailed repair guides and technical documents.
Training
Conducted technical training sessions and contributed to repair databases.
Certifications & Research
Certifications
- ASE Master Technician Certification
- Advanced Diagnostic Specialist
- Hybrid/Electric Vehicle Systems
- Performance Tuning Expert
Research & Community
Actively researches emerging technologies and contributes to automotive forums.
Legal Disclaimer
Important information about using this content
Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.
General Information
Warranty & Liability
The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.
We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.
Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.