Correct, it removes the resonator but not the secondary cats. I have removed the secondary cats by getting a Supersprint section 1 piece (connects to the header) so it mates to the BMW PE exhaust. I think it sounds great and it doesn’t throw and CEL.
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BMW CCA Member# 481791
Current: 2013 E92 328i LMB/ Saddle Brown (1 of 21 for E92 LCI in that combo), 2018 F31 330xi AW/ Saddle Brown
Sold: 2011 1M BS/Black, 2008 E90 328xi AW/ Beige, 2001 E46 330xi SG/Black
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