Group Buy For C63 Down Pipes with and without 200 Cell Catalytic Converters
However look into these O2 extension with cat material sold by Fabspeed
https://www.fabspeed.com/universal-o...verter-single/
This will LIKELY prevent the CEL from coming on due to absence of secondary cats
The Best of Mercedes & AMG
Checkout my Instagram c63amg247 for pics and vids.
It was way way to obnoxious, it was like a drag car and the smell was over whelming.
Fitted the Vibrant Gesi cats as quick as I could which killed the smell and in my opinion left the car sounding on point...
I love how this car sounds now, it's loud but not over done.










