IE ProCore Downpipe, MK8 GTI/Golf R, Audi 8Y S3The iE ProCore Downpipe takes your VW MK8 GTI, Golf R, or Audi 8Y S3 to a new level of menacing. The high flow 200CPSI catalytic converter is generously sized to support any engine tune and hybrid turbochargers. Our specialty in house engineered precious metal coating process produces an advanced CAT to align with ECU emissions requirements, so you can upgrade without the check engine light for a triple win: high flow design, no CEL, and plenty of
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