I think the cats are only in the california pipes. I did pull mine apart. The baffle is welded in a cone that extends to the head pipe. I cut this off and uncapped the baffle. Now it was an open compatition baffle much like the one in a V&H pro pipe. The sound was more tinney. I welded the cap back on and it is better. It now matches the V&H street baffle.
I still might buy a full length baffle and some packing and try that.
I did notice that there is a small diamiter pipe in the muffler after the collector. This went inside the cone. I would think this would be a restriction.
Most 2-into-1 pipes are open after the collector and run through a full length open baffle.
09 Ness Vision
09 Lucky Lime Jackpot (gone but not forgotten RIP)
05 116 Jackhammer