I'm sick of losing my local tracks to noise complaints.... 3 so far, and theres not many left. So I picked up the insert today! db Dawg. I just finished installing it, took about 2 minutes. I noticed right away the bike is really quiet at idle... but still fairly loud on the rev. Definitely the obnoxious bark is gone.... I think the sound will not carry as far and bounce off tree lines. It seems as though the exhaust is broken up (distributed) more instead of such a forceful stream. If I put my hand behind the pipe and rev the bike I can definitely tell the exhaust flow is spread more.... but it doesn't seem restricted at all! The bike fired up right away, and still revs very aggressive. I don't think it will hurt the performance at all. One other thing I noticed is my header pipe didn't start to glow at all, which is strange because usually it glow if I rev the bike on the stand for that long. Don't really know if its directly related or not? I will post an update after this weekend ride. Heres a couple pics.