Exhaust Subaru Impreza

Exhaust systems for Subaru Impreza mainly include complete turboback lines, catback exhausts, rear silencers, decatalyzers (removal of second catalytic converter), and exhaust pipes. Materials often used are stainless steel (INOX T304) for durability and enhanced sound and performance.

These exhausts typically fit Subaru Impreza WRX STI turbo models with 2.0L or 2.5L engines, covering production years approximately from 2000 to 2019. Compatibility varies by product type and model year, so it is important to verify fitment before purchase.

Upgrading the exhaust system enhances exhaust gas flow and produces a more aggressive, raw sound. Performance gains of 20 to 40 horsepower can be achieved with a full stainless steel line depending on the system. Improvements also include torque increase and an enhanced engine sound experience.

• Sharper, sportier exhaust sound
• Increased engine power and torque
• Better exhaust gas evacuation
• Durable stainless steel construction

These enhancements are optimized for the Boxer engine in Subaru WRX/STI models.

Some exhaust systems come with European CE approval and certifications that comply with federal and California emission requirements. However, it is important to verify specific regulations for your vehicle's region and application, especially concerning catalytic converters and emission standards.

• Check for CE or equivalent certifications
• Confirm compliance with local emission laws
• Legal for street use if certification is present

Always ensure compatibility with your vehicle's emission system before installation.

Most aftermarket exhaust systems for the Subaru Impreza use high-quality stainless steel (usually INOX T304) for superior corrosion resistance and durability. Pipe diameters typically range from 63.5 mm to 76.2 mm (2.5 to 3 inches). Some systems include complete hardware kits, excluding the turbo joint gasket.

• Stainless steel (INOX T304) construction
• Pipe sizes around 63.5-76 mm diameter
• Includes mounting hardware (excluding turbo gasket)
• Designed for enhanced sound and longevity

This ensures durability and performance improvements while maintaining proper fit and function.

Most exhaust systems for Subaru Impreza are designed for easy installation, often plug-and-play, and come with necessary screws and gaskets (except turbo joint gaskets). However, some complex components like specific exhaust manifolds or decatalyzers require professional installation.

• Plug-and-play fitting for many components
• Hardware and gaskets included except for turbo flange
• Professional installation recommended for manifold or custom parts
• Installation instructions usually provided

If unsure, consult a qualified mechanic to ensure proper fit and seal.

Properly designed exhaust systems can improve exhaust flow and potentially optimize engine efficiency. However, removing or modifying catalytic converters may affect emission control and could impact legal compliance and engine tuning. Always ensure that the exhaust system is compatible and installed correctly to avoid negative effects on engine performance or fuel consumption.

• Improved exhaust gas flow can enhance efficiency
• Maintaining catalytic converters helps meet emission and engine requirements
• Correct installation protects engine health
• Fuel consumption impact may vary depending on system design

For vehicles in regions with emission regulations (e.g., California), retaining compliant catalytic converters is essential.

To confirm compatibility with your Subaru Impreza model and engine, provide your vehicle identification number (VIN) or exact model year and engine type to the supplier. Many suppliers offer installation instructions and expert technical support via email or online. Additionally, measuring pipe diameters and verifying emission system requirements is recommended before ordering.

• Use VIN to confirm exact fit and specifications
• Request installation manuals or guidance
• Ensure emission and local legal compliance
• Contact technical support for any questions on fitment or installation

Using these resources helps avoid installation issues and ensures you receive the correct exhaust components for your vehicle.