Just thought I post the before and after clips of the exhaust. I recorded a video of before/after with variable RPM ranges. I took the video from my phone so maybe I will redo this coming weekend (obviously just the after install sound). Until then this is what I have.
STOCK EXHAUST
http://www.youtube.com/watch?v=CI6t2sNVPqE (http://www.youtube.com/watch?v=CI6t2sNVPqE)
YOSHIMURA EXHAUST
http://www.youtube.com/watch?v=hOzjEkW1NWA (http://www.youtube.com/watch?v=hOzjEkW1NWA)