Re: Rattling in my rear lol...
I bought my 'stang a year ago and it took me a couple months to figure it out:
My car has aftermarket Flowmasters on and it seems like the passenger side pipe from the Y to the muffler rubs some kind of a support bar all the time. It was an annoying noise on any bump. I've put some rubber between the pipe and bar and went away instantly. Not sure why the pipe on the driver's side clears but not the passenger side.
Hope that helps.
2005 GT Premium
Flowmasters, Flat-Black Racing & Reverse C-Stripes, blacked-out GT emblem, Honeycomb Deck Lid & Tail Lights, Black GT Fuel Door, Axerra Bluetooth Radio w/ iPod, shortened stock antenna, S&B CAI, 18" 2010 GT Wheels, Halo Headlights