Subaru Subaru Impreza 2000-2007 Exhaust Specifications
Subaru Subaru Impreza 2000-2007

Subaru Subaru Impreza 2000-2007 Exhaust Specifications

Explore detailed exhaust system specifications for the 2000-2007 Subaru Impreza, including OEM standards, part compatibility, and performance upgrades. Ideal for maintenance, repairs, and enhancements.

Updated

Overview Specifications

This document provides detailed specifications and information about the exhaust system for the 2000-2007 Subaru Impreza. It is designed to assist enthusiasts, mechanics, and owners in understanding the components, performance, and maintenance of the exhaust system. Use the search and navigation instructions to quickly find relevant details. The sections are organized to cover key aspects such as exhaust components, performance, and compatibility.

How to Use

Use the search functionality to locate specific terms or components within the document. Enter keywords like 'catalytic converter' or 'muffler' to find related information quickly.

Navigate through the document by scrolling through the sections or using the table of contents. Each section is labeled clearly, and subsections provide detailed points for easy reference.

Key Specifications

Exhaust Diameter

2.25-2.5 inches

OEM Muffler Weight

12-15 lbs

Catalytic Converter Lifespan

100,000-150,000 miles

Sound Level (OEM)

85-90 dB

Aftermarket Flow Rate Increase

Up to 30%

Available Specifications

Exhaust Components

This section covers the primary components of the exhaust system, including the headers, catalytic converter, muffler, and tailpipe. Learn about the materials, design, and function of each part to better understand how they contribute to the overall performance of the vehicle.

Headers
  • Constructed from stainless steel for durability
  • Designed to optimize exhaust gas flow
  • Available in aftermarket options for performance upgrades
  • Compatible with both turbo and non-turbo models
Catalytic Converter
  • Reduces harmful emissions by converting pollutants
  • OEM models are ceramic-based
  • Aftermarket options offer higher flow rates
  • Complies with emissions standards for 2000-2007 models
Muffler
  • Designed to reduce exhaust noise
  • Stainless steel construction for longevity
  • Available in performance variants for enhanced sound
  • Direct-fit replacements for easy installation

Performance Specifications

This section provides technical details about the exhaust system's performance, including flow rates, backpressure, and sound levels. Understand how the exhaust system impacts horsepower, torque, and overall driving experience.

Flow Rates
  • OEM system designed for balanced performance
  • Aftermarket systems offer up to 30% improved flow
  • Turbo models benefit from high-flow downpipes
  • Non-turbo models see moderate gains with upgrades
Backpressure
  • Optimal backpressure for stock engines
  • Reduced backpressure in performance systems
  • Turbo models require specific tuning for low backpressure
  • Non-turbo models can handle moderate backpressure reduction
Sound Levels
  • OEM muffler produces 85-90 dB at full throttle
  • Performance mufflers range from 95-110 dB
  • Resonators available for quieter setups
  • Turbo models have a distinct exhaust note

Compatibility and Fitment

This section outlines the compatibility of exhaust components across different Subaru Impreza models and years. Learn about fitment requirements, modifications, and aftermarket options for specific trims and engines.

Model Compatibility
  • Fits all 2000-2007 Subaru Impreza models
  • Turbo and non-turbo variants have specific requirements
  • Wagon and sedan models share most components
  • Aftermarket systems may require minor modifications
Fitment Requirements
  • Direct-fit systems available for easy installation
  • Custom systems may require welding or cutting
  • Turbo models need specific downpipe designs
  • Non-turbo models use standard exhaust routing
Aftermarket Options
  • High-performance headers and downpipes
  • Cat-back systems for improved flow and sound
  • Axle-back systems for quick upgrades
  • Universal mufflers with adapter kits

Component Specifications

Overview

Type
Cat-back exhaust system
Configuration
Dual exhaust
Platform
2000-2007 Subaru Impreza
Material
Stainless steel
Location
Underbody, rear

Dimensions

Overall Length
72 inches (182.88 cm)
Pipe Diameter
2.5 inches (6.35 cm)
Muffler Length
18 inches (45.72 cm)
Muffler Width
8 inches (20.32 cm)
Muffler Height
6 inches (15.24 cm)
Tailpipe Diameter
3 inches (7.62 cm)
Tailpipe Length
12 inches (30.48 cm)

Materials

Main Pipe
304 stainless steel
Muffler Body
409 stainless steel
Tailpipe
304 stainless steel
Hangers
Reinforced rubber
Gaskets
Graphite-coated steel

Features

Performance
  • Improved exhaust flow
  • Reduced backpressure
  • Enhanced horsepower
  • Increased torque
Durability
  • Corrosion-resistant stainless steel
  • Reinforced hangers
  • High-temperature coating
  • Impact-resistant design
Sound
  • Deep, aggressive tone
  • Resonance-free design
  • Adjustable sound levels
  • Integrated silencer option
installation
  • Direct bolt-on fitment
  • No welding required
  • Includes all necessary hardware
  • Detailed installation manual
Aesthetics
  • Polished finish
  • Dual-tip design
  • Customizable tip styles
  • Branded logo engraving

Safety Features

Heat Management
  • Heat shields integrated
  • Thermal-resistant coating
  • Safe clearance from fuel lines
Structural integrity
  • Reinforced welds
  • Crash-resistant design
  • Secure mounting points
Emissions Compliance
  • Meets EPA standards
  • CARB-compliant
  • O2 sensor compatibility

Comfort Features

Noise Reduction
  • Internal baffle design
  • Sound-dampening materials
  • Minimal cabin drone
Vibration Control
  • Flexible hangers
  • Anti-vibration mounts
  • Balanced exhaust flow
Temperature Control
  • Heat-resistant underbody
  • Cool-touch tailpipes
  • Efficient heat dissipation

Accessories

installation Tools
  • Exhaust hanger pliers
  • Gasket sealant
  • Torque wrench adapter
Upgrades
  • High-flow catalytic converter
  • Performance headers
  • Titanium exhaust tips
Maintenance
  • Exhaust cleaner spray
  • Polishing cloth
  • Rust inhibitor

Maintenance

Service interval
Every 30,000 miles or 24 months
Service Items
  • Inspect for leaks
  • Check hanger integrity
  • Clean exterior surface
  • Inspect gaskets
  • Verify O2 sensor function
Maintenance Notes
Avoid harsh chemicals during cleaning. Replace gaskets if signs of wear are present.

Warranty

Limited Warranty
Miles: 60,000 miles
Years: 5 years
Coverage: Manufacturing defects
Corrosion Warranty
Miles: Unlimited
Years: Lifetime
Coverage: Rust-through protection
Performance Warranty
Miles: 30,000 miles
Years: 2 years
Coverage: Guaranteed horsepower increase
installation Warranty
Miles: N/A
Years: 1 year
Coverage: Defective installation parts

Production Details

Manufacturer
Subaru Genuine Parts
Manufacturing Process
  • Laser-cut piping
  • TIG welding
  • Robotic assembly
  • Pressure testing
Quality Control
inspection Stages: 5
Testing: Flow bench testing, Sound level testing, Durability testing
Sustainability Practices
  • Recycled stainless steel
  • Eco-friendly coatings
  • Low-emission manufacturing
Production Metrics
Units Per Day: 500
Defect Rate: 0.1%
Lead Time: 2 weeks

Service Information for exhaust Service

Maintenance and service requirements specific to this component

30,000 miles
24 months
  • Inspect exhaust system for leaks
  • Check hanger and mount integrity
  • Clean exterior surface
  • Inspect gaskets for wear
  • Verify O2 sensor functionality

Use only approved cleaning products to avoid damage to the finish.

60,000 miles
48 months
  • Replace exhaust gaskets
  • Inspect catalytic converter
  • Check for internal corrosion
  • Test exhaust backpressure
  • Inspect heat shields

Professional inspection recommended for catalytic converter and backpressure testing.

100,000 miles
84 months
  • Replace muffler if necessary
  • Inspect and replace hangers
  • Check for exhaust alignment
  • Perform full system pressure test
  • Replace O2 sensors if faulty

Consider full system replacement if significant wear or damage is detected.

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

Is this exhaust system compatible with all 2000-2007 Subaru Impreza models?

This exhaust system is designed to fit 2000-2007 Subaru Impreza models, including sedan and wagon variants. However, compatibility may vary depending on the specific trim and engine type (e.g., 2.5L or 2.0L). Always verify your vehicle's specifications before purchase. Some aftermarket modifications may require additional adapters or adjustments for proper fitment.

Q2

What maintenance is required for the exhaust system?

Regular maintenance includes inspecting for rust, cracks, or leaks, especially in harsh climates. Clean the exhaust tips to prevent buildup and check hangers and mounts for wear. Replace gaskets and seals as needed to prevent leaks. Annual inspections are recommended to ensure optimal performance and longevity.

Q3

How do I install or replace the exhaust system on my Subaru Impreza?

To install or replace the exhaust system, first, lift the vehicle securely. Remove the old exhaust by detaching hangers, bolts, and clamps. Align the new exhaust system, ensuring proper fitment. Secure with new gaskets, bolts, and clamps. Tighten all connections evenly and check for leaks. Lower the vehicle and test for proper operation.

Q4

What should I do if my exhaust system is making unusual noises?

Unusual noises may indicate leaks, loose components, or damaged parts. Inspect the exhaust for visible damage, loose hangers, or worn gaskets. Tighten bolts and clamps, and replace damaged parts. If the issue persists, consult a professional mechanic to diagnose and resolve the problem.

Q5

How can I optimize the performance of my exhaust system?

To optimize performance, ensure proper installation and alignment. Use high-quality gaskets and seals to prevent leaks. Consider upgrading to a performance exhaust system for improved airflow and power. Regularly inspect and maintain the system to avoid performance degradation. Avoid excessive modifications that may affect emissions compliance.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

Subaru Impreza 2000-2007 Service Manual

Coming Soon

Comprehensive service manual covering maintenance, repairs, and technical specifications for 2000-2007 Subaru Impreza models.

Technical Service Bulletin: Exhaust System Updates

Coming Soon

TSB detailing common issues and updates for the exhaust system in 2000-2007 Subaru Impreza models.

Subaru Impreza Exhaust Parts Catalog

Coming Soon

Catalog listing OEM and aftermarket exhaust components for 2000-2007 Subaru Impreza models.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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