u/Ill_Distribution_778

Need some advice from S55/BMW techs & owners. I have a 2019 BMW M4CS with the factory titanium muffler setup. I’m mainly chasing a better/louder sound without ruining drivability or making it sound raspy.

Right now I still have stock cats. I was thinking about just doing an equal length midpipe first. For those who’ve done it, was it enough of a difference with the titanium muffler?

Also debating downpipes — should I go DP or leave the cats in? What are the real cons besides smell/emissions? Any issues with drone, rasp, CELs, reliability, or daily driving?

Open to any other exhaust setup recommendations for the best overall S55 sound. Thanks.