.es-years-header, .es-years-cell { display: table-cell; } .es-years-mobile { display: none; } @media (max-width: 620px) { .es-years-header, .es-years-cell { display: none !important; } .es-years-mobile { display: block !important; font-size: 13px; color: #666; margin-top: 3px; } } The iE ProCore Downpipe for the Audi B9 A4 or A5 delivers an improved exhaust note with a massive increase in exhaust flow. Our unique in-house-engineered 4.75" 200 CPI catalytic converter channels substantial flow to support beyond Stage 2 tuning and upgraded turbos. The specialty ProCore CAT design includes rare and precious metal coatings that clean and limit emissions output to align with factory ECU requirements. so that you can upgrade without the check engine light. Our in-house engineered ProCore Catalyst design features a specialized coating that filters and cleans exhaust gasses instead of a denser flow-killing cell count. This emissions coating process aligns with factory emissions output, enabling it to pass vehicle readiness monitors without triggering a check engine light. An advanced molecular bonded wash process applies the precious metal coatings to ensure long-life reliability. Whether you’re looking to improve the exhaust note from your A4 or building a big power, big boost setup, enjoy your exhaust without the annoying check engine light. Features CEL-FREE CATALYST DESIGN ProCore catalyst -No check engine light. INCREASED AIRFLOW High-flow design -Supports Stage 2 & hybrid turbo power. ENHANCED SOUND Increases sound -Full and enriched exhaust note. EASY INSTALLATION Bolt-on direct fit -No cutting, no welding, no hassle. CORROSION-RESISTANT MATERIAL High quality -Stainless steel, TIG welded, & investment casting. FAST US SHIPPING Ships from a US warehouse with quick dispatch and tracked delivery to your door. Vehicle Compatibility Model Years Compatible Trims Audi A4 (B9 / B9.5) 2017–2024 2017–2024 A4 Fits the models and years listed above only. Message us with your VIN if you would like fitment confirmed before ordering. What’s Included 1x Integrated Engineering ProCore Downpipe Availability & Shipping In stock and ships from a US warehouse. Orders are typically processed within 1–5 business days. Estimated US delivery: 3–5 business days with tracking provided once dispatched. Some items may require additional processing time depending on the specific product and current demand. Free shipping anywhere in the US. International orders: estimated delivery 6–18 business days depending on destination and customs.
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