Exhaust Rattles

[Sib]

I've removed much of the heat shielding already but the rattle continues - could it be the baffles inside or is this unlikely or what does it sound like.

Got a magnex system

 

[TomTom]

Standard cat? Or full magnex system? The standard cats can rattle a lot around 4k

Check you haven't got a clamp going loose, or even rattling against the subframe - would be more of a knock though.