If you are going straight from DP to muffler with only flexpipe its gooing to be looud in 3". My setup is 2.5" flare to 3" Dp then 3" flexpipe and run all the way to egay muffler which is megan muffler its loud and very deep. If you have money look for a dual loop muffler close to 3". My friend told me the magna flow one is not loud at all, but i duoo how loud it is compare to my setup.
here is a pix of the megan one, its all rice baby
[img]http://www.******************.com/wetoddimage.wtdr/wNzM2MDYwNnM0MTNkZmQzMXk1NDE%3D.jpg[/img] you can see it all the way at the back on ebp lude
Also this link got some from h-t.com
http://honda-tech.com/zerothread?id=1125008