BMW M3 and BMW M4 Forum - View Single Post - Equal-length exhaust discussion: new S55 sounds

EvoFire · 12-10-2019, 01:42 PM

ntg44

I probably should know this, but I don't since I hadn't planned on removing my cats, but do you get any warnings with removing the secondary cats?

Also would the production exhaust be with or without the cats?

12-10-2019, 01:42 PM	#82
EvoFire Second Lieutenant 99 Rep 239 Posts Drives: None Join Date: Jun 2017 Location: Vancouver iTrader: (0)	ntg44 I probably should know this, but I don't since I hadn't planned on removing my cats, but do you get any warnings with removing the secondary cats? Also would the production exhaust be with or without the cats?
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