It sounds wonderful and fitment is superb, it is also way louder on my sr that it was on the ka that use to chug my car around, but there was still a cat on it then.
Here is a vid of my car on a dyno, quality isn't that great but you get the idea.
http://www.youtube.com/watch?v=e3oBpIsFCVg
Edit: Resonators are a good thing, they smooth the tone of the exhaust and help cut down on the rasp with out an easily measurable loss of power.