Wagner Tuning Catted DownpipeDownpipe Kit with 200CPSI Racing catalyst for BMW M3 M4 F80 82 83 without GPF! Features: made out of high quality stainless steel 1. 4301 (SS304) complete 3 Inch and adapter for stock exhaust Racing Metal Catalytic Converter (200CPSI with high quality EURO 6 coating) 100% perfect fit, replace OEM less thermal load on the turbocharger more power by reducing back pressure significantly more torque Error display in the DME possible.
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