Subaru Subaru Impreza 2007-2011 Exhaust Specifications
Explore detailed exhaust system specifications for the 2007-2011 Subaru Impreza, including OEM and aftermarket compatibility, dimensions, and performance upgrade options. Ideal for repairs, maintenance, and modifications.
Overview Specifications
This document provides detailed specifications and technical information about the exhaust system for the 2007-2011 Subaru Impreza. It is designed to assist users in understanding the components, configurations, and performance characteristics of the exhaust system. Use the search and navigation instructions to quickly locate specific details or browse through sections for a comprehensive understanding.
How to Use
Use the search functionality to find specific terms or components within the document. Enter keywords like 'muffler' or 'catalytic converter' to jump directly to relevant sections.
Navigate through the document by scrolling through sections or using the table of contents. Each section is organized into subsections with detailed technical points for easy reference.
Key Specifications
Exhaust Diameter
2.25 inches
Catalytic Converter Type
Three-way catalytic
Muffler Material
Aluminized steel
Exhaust Configuration
Single or dual
Emissions Compliance
EPA and CARB
Available Specifications
Exhaust System Components
This section outlines the primary components of the exhaust system, including the exhaust manifold, catalytic converter, muffler, and tailpipe. Learn about the materials, design, and function of each part.
Exhaust System Components
This section outlines the primary components of the exhaust system, including the exhaust manifold, catalytic converter, muffler, and tailpipe. Learn about the materials, design, and function of each part.
Exhaust Manifold
- Made of cast iron or stainless steel for durability
- Designed to collect exhaust gases from the engine cylinders
- Features a 4-into-1 configuration for optimal flow
- Includes heat shields to protect surrounding components
Catalytic Converter
- Reduces harmful emissions by converting pollutants into less harmful gases
- Contains a ceramic or metallic substrate coated with catalysts
- Located downstream of the exhaust manifold
- Complies with EPA and CARB emissions standards
Muffler
- Constructed from aluminized steel for corrosion resistance
- Uses baffles and chambers to reduce exhaust noise
- Features a dual-tip design on certain models
- Designed for optimal backpressure and performance
Exhaust System Configurations
This section covers the different exhaust configurations available for the 2007-2011 Subaru Impreza, including single and dual exhaust setups. Understand the differences and benefits of each configuration.
Exhaust System Configurations
This section covers the different exhaust configurations available for the 2007-2011 Subaru Impreza, including single and dual exhaust setups. Understand the differences and benefits of each configuration.
Single Exhaust
- Standard configuration for most Impreza models
- Features a single catalytic converter and muffler
- Simpler design for cost-effectiveness
- Ideal for daily driving and fuel efficiency
Dual Exhaust
- Available on performance-oriented models
- Includes dual mufflers and tailpipes
- Enhances exhaust flow and engine performance
- Provides a sportier exhaust note
Performance and Maintenance
This section provides insights into the performance characteristics of the exhaust system and offers maintenance tips to ensure longevity and optimal functionality.
Performance and Maintenance
This section provides insights into the performance characteristics of the exhaust system and offers maintenance tips to ensure longevity and optimal functionality.
Performance Characteristics
- Designed for low backpressure to improve engine efficiency
- Optimized for torque and horsepower output
- Supports Subaru's Boxer engine design
- Enhances throttle response and acceleration
Maintenance Tips
- Inspect for rust and corrosion regularly
- Check for exhaust leaks at joints and connections
- Replace worn-out gaskets and hangers as needed
- Clean the catalytic converter to prevent clogging
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Component Specifications
Overview
- Type
- Dual exhaust system
- Configuration
- Single catalytic converter with dual mufflers
- Platform
- 2007-2011 Subaru Impreza
- Material
- Stainless steel and aluminized steel
- Location
- Underbody, rear-mounted
Dimensions
- Pipe Diameter
- 2.25 inches (57.15 mm)
- Overall Length
- 72 inches (1828.8 mm)
- Muffler Length
- 24 inches (609.6 mm)
- Tailpipe Diameter
- 3 inches (76.2 mm)
- Catalytic Converter Length
- 18 inches (457.2 mm)
- Ground Clearance
- 6.5 inches (165.1 mm)
- Weight
- 28 lbs (12.7 kg)
Materials
- Exhaust Pipes
- Aluminized steel
- Mufflers
- Stainless steel
- Catalytic Converter
- Ceramic substrate with stainless steel casing
- Tailpipes
- Polished stainless steel
- Gaskets
- Graphite and steel composite
Features
- Performance
-
- Optimized backpressure for improved engine efficiency
- Dual mufflers for enhanced sound dampening
- High-flow catalytic converter
- Corrosion-resistant materials
- Design
-
- Dual exhaust tips for sporty appearance
- Mandrel-bent pipes for smooth airflow
- Heat-resistant coatings
- Integrated hangers for secure mounting
- Durability
-
- Rust-resistant stainless steel construction
- Reinforced welds for longevity
- UV-resistant coatings
- Impact-resistant design
- Emissions
-
- EPA-compliant catalytic converter
- Low-emission design
- Oxygen sensor compatibility
- Efficient exhaust gas recirculation
- Sound
-
- Tuned exhaust note
- Reduced cabin noise
- Balanced resonance
- Minimized drone at highway speeds
Safety Features
- Heat Management
-
- Heat shields for underbody protection
- Thermal-resistant coatings
- Safe distance from fuel lines
- Structural integrity
-
- Reinforced mounting points
- Crash-resistant design
- Flexible joints to prevent cracking
- Emissions Control
-
- Catalytic converter for harmful gas reduction
- Oxygen sensor integration
- Leak-proof gaskets
Comfort Features
- Noise Reduction
-
- Dual-chamber mufflers
- Sound-dampening materials
- Minimized vibration
- Heat insulation
-
- Underbody heat shields
- Thermal wraps
- Cooled exhaust tips
- Aesthetics
-
- Polished tailpipes
- Sleek dual-tip design
- Integrated rear bumper fit
- Maintenance
-
- Easy-access oxygen sensor ports
- Replaceable gaskets
- Modular design for component replacement
Accessories
- Performance Upgrades
-
- High-flow catalytic converter
- Aftermarket mufflers
- Exhaust tip extensions
- Maintenance Tools
-
- Exhaust hanger removal tool
- Oxygen sensor socket
- Gasket scraper
- Protection
-
- Exhaust wrap
- Heat shield coatings
- Underbody rust protectant
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Inspect for leaks or cracks
- Check oxygen sensor functionality
- Inspect catalytic converter efficiency
- Tighten all mounting bolts
- Replace gaskets if necessary
- Maintenance Notes
- Regularly clean exhaust tips to prevent corrosion. Avoid driving through deep water to prevent damage to the catalytic converter.
Warranty
- Manufacturer Warranty
- Miles: 60,000Years: 5Coverage: Defects in materials and workmanship
- Corrosion Warranty
- Miles: 100,000Years: 10Coverage: Perforation due to rust
- Performance Warranty
- Miles: 50,000Years: 4Coverage: Catalytic converter efficiency
- Parts Warranty
- Miles: 30,000Years: 2Coverage: Gaskets and hangers
Production Details
- Manufacturer
- Subaru Corporation
- Manufacturing Process
-
- Laser-cut components
- Robotic welding
- Mandrel bending
- Automated quality inspection
- Quality Control
- Pressure Testing: 100% tested for leaksMaterial inspection: X-ray and ultrasonic testingFitment Checks: CAD-verified fitment
- Sustainability Practices
-
- Recycled stainless steel usage
- Low-emission manufacturing
- Waste reduction initiatives
- Production Metrics
- Annual Production: 500,000 unitsDefect Rate: 0.1%Lead Time: 4 weeks
Service Information for exhaust Service
Maintenance and service requirements specific to this component
- Inspect exhaust system for leaks or damage
- Check oxygen sensor functionality
- Tighten all mounting bolts and hangers
- Inspect catalytic converter for efficiency
- Replace gaskets if necessary
Ensure the vehicle is on a lift for proper inspection.
- Perform full exhaust system inspection
- Check for corrosion or rust
- Test backpressure levels
- Inspect heat shields for damage
- Replace oxygen sensors if needed
Use a backpressure gauge for accurate testing.
- Replace catalytic converter if efficiency is below 90%
- Inspect and replace mufflers if necessary
- Check exhaust hangers and replace if worn
- Perform full system pressure test
- Replace all gaskets and seals
Major service may require specialized tools and equipment.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 Is this exhaust system compatible with all 2007-2011 Subaru Impreza models?
Is this exhaust system compatible with all 2007-2011 Subaru Impreza models?
This exhaust system is designed to be compatible with 2007-2011 Subaru Impreza models, including both sedan and hatchback variants. It fits 2.5L naturally aspirated engines and WRX/STI turbocharged models. However, compatibility may vary based on trim levels and aftermarket modifications. Always verify fitment using your vehicle's VIN or consult the manufacturer's compatibility chart before purchase.
Q2 What maintenance is required for the exhaust system?
What maintenance is required for the exhaust system?
Regular maintenance for the exhaust system includes inspecting for rust, cracks, or leaks every 6-12 months. Clean the exhaust tips to prevent buildup and check hangers and gaskets for wear. For turbocharged models, monitor the downpipe and catalytic converter for heat-related stress. Replace worn components promptly to maintain performance and avoid costly repairs.
Q3 How do I install or replace the exhaust system?
How do I install or replace the exhaust system?
To install or replace the exhaust system, first, lift the vehicle securely using jack stands. Remove the old exhaust by loosening bolts at the manifold, midpipe, and muffler connections. Install the new system, starting from the front and working backward, ensuring proper alignment and tight seals. Use new gaskets and torque bolts to manufacturer specifications. Test for leaks before driving.
Q4 What should I do if my exhaust system is making unusual noises?
What should I do if my exhaust system is making unusual noises?
Unusual noises, such as rattling or hissing, often indicate loose components, leaks, or damaged parts. Inspect the exhaust hangers, gaskets, and connections for wear or misalignment. Tighten loose bolts and replace damaged gaskets. If the issue persists, check for cracks or holes in the pipes or muffler. Professional inspection may be necessary for complex issues.
Q5 How can I optimize the performance of my exhaust system?
How can I optimize the performance of my exhaust system?
To optimize performance, consider upgrading to a high-flow catalytic converter or cat-back exhaust system for improved airflow. Ensure proper tuning to match the exhaust modifications, especially for turbocharged models. Regularly clean and inspect the system to maintain efficiency. Avoid excessive backpressure by using components designed for your specific engine and driving conditions.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2007-2011 Subaru Impreza Service Manual
Coming SoonComprehensive guide covering maintenance, repair, and technical specifications for 2007-2011 Subaru Impreza models.
Technical Service Bulletin: Exhaust System Updates
Coming SoonDetails updates and fixes for common exhaust system issues in 2007-2011 Subaru Impreza models.
Subaru Impreza Exhaust Parts Catalog
Coming SoonCatalog listing OEM and aftermarket exhaust components for 2007-2011 Subaru Impreza models.
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Technical Information
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