BMW F3X 4 Series 440i/xi (Sedan / Touring) (B58) 2014-2019 Down Pipes OBD2 - 400 CEL Sport Cats

EPA Compliant 400cpsi High-Performance Catted Down Pipe.NOTE: Federal law prohibits the tampering of an emissions control device. Mobile Source Enforcement Memorandum 1A allows for aftermarket parts to be used in the repair or replacement of emissions control systems, provided the emissions aren't adversely affected.There is no mention or reference to cell density or converter volume dimension.The GESI catalytic converter will produce emissions that will meet the standards set by the EPA, not CARB.These catalytic converters are not legal for use on vehicles registered in the state of California as a result of California Vehicle Code Section 27156 and 38391.