new header, too loud now

[GTS]

Hey guys

Just threw on a DC sports header
Had to remove the stock cat, I replaced it with a Magnaflow cat.

So my set up is now Header > Magnaflow cat > 2..25" pipping > HP racing muffler

http://www.car-sound.com/catalog/universal/500.aspx
This is the cat

http://www.hpracing.com/parts_detail...=50-M18&id=41&
this muffler to be exact.

Now the gains are great, but it's loud now...too loud. At idle, it's okay, but on acceleration it's just too loud (that civic blaring volume), and at WOT, it just blares.

At this point, what are my options to make it quiet. I wouldn't mind taking a minor loss in power so long it's at least more than what it was before the header. but my main concern now is to get the noise down.

what are my options?
Add resonator? Add another cat? change current cat? change muffler?

What are losses with each option?

Your input is greatly appreciated