Integrated Engineering ProCore Downpipe - Audi B9 S4/S5

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The IE ProCore Downpipe for your Audi B9 S4 or S5 delivers an improved exhaust note and increased flow. Our in-house engineered 6" 400CPSI catalytic converter channels substantial flow to support upgraded engine tunes and larger turbochargers. The specialty tri-core design and precious metal coatings align with ECU emissions requirements so that you can upgrade without the check engine light. IE's in-house engineered ProCore Catalyst features our own tri-core design with a specialized coating, 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 3.0T or building a track-destroying hybrid turbo setup, enjoy your exhaust without the annoying check engine light. Features: IE ProCore catalyst -No check engine light High-flow design -Supports hybrid & large turbo power Increases sound -Full and enriched exhaust note Bolt-on direct fit -No cutting, no welding, no hassle High quality -Stainless steel, TIG welded, & investment casting What's Included: Integrated Engineering ProCore Downpipe Show more