Description
The Milltek HJS Tuning ECE Downpipes are a premium upgrade for the Audi B9 S4, offering enhanced exhaust performance while remaining fully road legal within Europe. These downpipes feature R103-compliant HJS ECE High-Flow Sports Cats that improve exhaust flow without triggering a check engine light or requiring ECU software upgrades. They are compatible with both OEM and Milltek Sport Cat-Back Systems, providing excellent versatility for different setups.
Key Features:
- SKU: SSXAU725
- Product Type: Downpipes, Sport Cats & Manifolds
- Resonated: Not Applicable
- Pipe Diameter: 63.5mm (2.5")
- Tip Finish & Shape: Not Applicable (Downpipes do not include tips)
- EC Approved: Yes (R103 Compliant for road use in Europe)
- Motorsport Use Only: No
Benefits:
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ECE-Compliant High-Flow Cats:
- Specifically designed to improve exhaust flow while staying road legal in Europe.
- Cell Density: 200 to 300 cells, optimized for performance and emissions compliance.
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Plug-and-Play Compatibility:
- Fits seamlessly with both OE Cat-Back Systems and Milltek Sport Cat-Back Systems, offering hassle-free installation.
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No ECU Modifications Needed:
- Does not require an ECU remap or software upgrade.
- Ensures no check engine light activation, maintaining reliability.
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Durable Construction:
- Engineered from high-quality materials to withstand performance demands and provide long-lasting use.
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Improved Exhaust Flow and Sound:
- Enhances the engine’s performance and delivers a more engaging driving experience.
Fitting Guide:
- Compatible Models:
- Audi S4 B9 (2017 - Present)
- Engine: 3.0 Turbo V6
- Body Styles: Saloon/Sedan & Avant
- Variants:
- Non-Sport Diff Models (Left & Right-Hand Drive)
- Sport Diff Models (Left-Hand Drive Only and Right-Hand Drive without Brace Bars)
Why Choose Milltek HJS Tuning Downpipes?
Milltek Sport’s collaboration with HJS Tuning ensures the highest standards in exhaust system upgrades. These downpipes provide the perfect balance between performance enhancement, emissions compliance, and reliability, making them an excellent choice for Audi S4 enthusiasts.
