Level one racing! It is the loudest and best sounding pipe, hell it only weighs 2 pounds. I did notice I lost some backpressure/torque which I can feel taking off from a stop if I dont get the revs above 3k. Well worth it, and wasn't too expensive. I also have the shorter 10" race core...

 

hahaha, you are so right. just the other day i was riding my bike to have lunch and i see this group of cruisers and harleys ride in the opposite direction and they JUST HAD TO rev so freaking loud when they downshift. I noticed that they do it all the time. scared the crap out of me kuz i wasnt expecting that and i was jsut chilling at the light..i jumped a lil when i heard the crack...damn things sound like they're gonna fall to pieces...lololol lawlcats...haha..sorry if i offended anyone who has harleys and cruisers...

 

I have the RS-3, I think it sounds pretty nice. Had a friend fly by me on it and I love the sound in the high revs.

Here's a vid of mine --> http://www.youtube.com/watch?v=kq_OZsHQC6s

 

Got the carbon fiber Jardine RT-1, love it. Here's a video comparing the sounds of a jardine and yoshi, it helped me decide when I was looking for slip ons

http://www.youtube.com/watch?v=EJM_5SaWHJU