REDSTAR performance downpipe for the new 2017+ B9 S4 & S5 3.0 TFSI with single-turbo engine. Our downpipes utilizes a big bore design with smooth transitions for maximum flow and efficiency. REDSTAR is the only manufacturer who offer so many modifications to choose from. It allows you to get the downpipe that exactly matches your needs and budget.
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Removing of factory catalytic converters will trigger a сheck engine light. Firmware update recommended to get maximum performance gains.