E63 Muffler Delete
my 55 is Kleeman headers, catless x pipe, oem resonator then oem mufflers with cutouts right before the mufflers. You'll be hard pressed to find me driving it with the cutouts closed. I daily drive 80 miles round trip open at all times unless they need to be closed. I love it. Maybe do cutouts then you can be loud when you want and quieter when needed. Being a 63 you'll be raspier but if you keep the cats in place it still shouldn't be retarded. I tried before the resonator and that's a no go. Droned like crazy. Keeping the factory resonator is optimal IMO.
i only close mine when I have lady friends (and an occasional cop) in the car since they mind the noise. They also hate the smell of a car with no cats
Last edited by 210lvr; Nov 28, 2016 at 03:26 PM.


