All,

I had the same terrible rattling you all describe. When stopped at a light, or idling, there is an embarrassing rattling noise that comes from under the car. When in park no rattle, then in reverse holding brake it rattles again.

I recently had the below parts put in, and now, no rattle!!!

DISA Valve 11617544805 $242.25
Exhaust Bracket18317502867 $20.10

Good Luck!