Waldo, you're almost certainly wrong, although I hope you're right because it means changing the muffler and 'cat or muffler box' wont make me fail emissions.


Reasons:
1. To pass Euro 3 emissions the bike must have a cat. Bike has Euro 3.
2. The place where that box is, is where nearly all manufacturers put a cat
3. All a cat is, is a perforated pipe in a box
4. Why would any manufacturer increase costs by putting a muffler box underneath the bike and then also have a muffler if the cat is in the header?

Exhibit 1: A bunch of car cats.
20130220_1119141_zps0308171a.jpg

Exhibit 2: A Suzuki Gixxer 600 cat, looks kind of similar, no?
Gixxer 600 cat.jpg

Perhaps Bikerdoc could find out and give us a definitive answer from the factory?