Hey all,

I realize this question has been answered many times, over and over again (yes I STFF) but I'm still unclear about whether I should purchase the pipe from a manufacturer such as Magnaflow and take it to the muffler shop or just have them supply it?

I'm getting a noticeably loud rattling noise from underneath the car (directly below the center console approximately) at idle (on and off) and I'm 99% sure it's the secondary cats, so I figured why not just get rid of them all together since they aren't needed to pass emissions test.

Any input of yours is appreciated.

The car in question is a 2006 E350 4Matic with 133k on the dash.

Thank you!