I drilled out the cat tonight..it looked to be more of an aluminum baffle than catalyst material.

I went to lowes and bought a 1 inch bi-carb hole saw.. the deepest one i could find.. and two 10 inch extensions and attached them together..

It took me about an hour.. because the drill bit fell off the extension and got stuck in the pipe... (silly me for not tightening down the set screw enough)

It was pretty diffiuclt because the holesaw bit was not deep enough.. even though it was the longest one.. so you really have to keep working at it from different angles until you can grind it all out. It seems where the exhaust comes in from the inside of the pipe... it runs out of a tiny 1 inch pipe as you can see way down at the end in the picture... the outside of this pipe is quite deceiving..

Anyway the sound is the same.. no real changes.. seems to pop a little more... which I like anyway.. but I didnt ride it much.. ill keep you updated.

I have not attached my ram air pipe yet.