Integrated Engineering Pro Core Downpipe For Audi B9/B9.5 S4 & S5

Unlock an improved exhaust note and increased flow for Audi S4 & S5 customers without triggering a check engine light. IE ProCore Downpipes for B9/B9.5 3.0T engines feature our all-new, in-house-engineered, 6" 400CPSI catalytic converter with a specialized tri-core catalyst and precious metal coatings. This design passes all vehicle readiness monitors while providing substantial flow gains over stock to support ECU tunes andhybrid turbochargers. B9 owners can now enjoy a free-flowing exhaust with CEL-free operation.

THE PROCORE ADVANTAGE

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