Number 2. Doesn't really explain well but it looks like he used a simple hole saw.

 

They jump around a little. Why the *** he didn't make just one 15 minute video??

 

 

Anyway, you get the idea...

 

Here is my bike. I didn't mind it without the baffles, I think it sounded great.

 

Not to bad. Cheap enough for a start anyway.

 

He didn't mention what size hole saw was used. Any idea what size??

 

I removed my baffles from my 13 SG. I didn't notice any power loss no popping, its not so loud that anyone gets mad at me and everyone including a dealer salesman says it sound as good as any aftermarket slipon. Here is a video stock and after the removal of my baffles. The sound quality is not good do to the echo effect of my garage.

 

Cool! Did you use a 3 inch hole saw?

 

Nope. I used a cut off wheel and cut the baffles away from the weld, then i had to grind some of the weld down to remove the baffles. Its very easy.
And like i said, the sound is not bad at all. It does not pop in deceleration nore do they sound tinny, if any thing they have a deep sound at idle and a nice bark when you give it gas. I'm very happy with it and i didn't have to spend 3, 4, 5 hundred to get to that point.