Question about Tomei exhaust system

[Zay370z]

So i'm currently running just a muffler delete and intakes.

I dont know too much about cars, just looking for the best options.

What would be the loudest setup? With atleast 13hp gains is basically what I'm looking for, the rest I need is sound.

I plan on getting test pipes + the full CBE.... just wondering what's the loudest?

If louder than a muffler delete, I am fine with actually. It cannot be less loud than a muffler delete though.

Basically... loudest setup with atleast 13 hp gains?
Tomei -> Stock Cats -> tomei y pipe -> tomei test pipes?
FI CBE -> non resonated -> FI test pipe?

That's what I understand would be the loudest. I do like the FI dual exit more, however willing to go Tomei.

Thank you very much for all the input.