Hey guys,

Just last night, I was driving somewhat hard (shifting at about 5500) and now my cat has this rattling inside of it.

This morning I crawled under the car and shook it to see what it was, and there sounds like a piece of the catalytic material broke off or something.

I haven't taken off the cat yet (and don't want too cause it's a pain in the ass). But what do you guys think?

I have the carsound 94005 2.25" high flow universal cat with flanges welded on. The rattling is farely loud. Noticeable when you start moving but disappears at higher speeds. Possibly from the engine noise, but blipping the throttle rattles the cat and low speed shifts.

Please, any suggestions and help is appreciated.