Would my car sound louder then stock with this set up? A dynomax superturbo muffler with a high flow cat. Im still not sure what to get. Im thinking about getting something that sounds simular to stock but louder. Kinda like a sleeper exhaust. Any ideas?

Almost any aftermarket exhaust will be louder than stock. Not all though.

That particular setup will be louder than stock.

is the muffler by itself without the high flow cat louder then stock?

Yes, the dynomax cat-back sounds like what you're looking for. It's a little louder than stock, but not by much. The only downside is it's 2.5".

I have the superturbo. Its not really much louder then stock, but it has a deeper tone to it.

Will a mild cam give my car a choppyier idle or make it sound loopy or kinda like a big block? Its only a 268 degree cam with 450 lift. I called the exhaust shop and they didn't know. Any help would be great!

Depends on how big the cam is, is that advertised duration or actual?

Im not really sure, i will ask him on tuesday when i go pick up the car.