if i ever get my hands on a camera ill do a video of it, but its really not bad. i have a kn cai also and the cai doesnt make any sound until about 4k rpms, and the exhaust makes its extremely deep tone from idle to about 3500 rpms. its really not excessively loud at all but it is definatly noticable. as you can tell, i love my exhaust. it sounds and looks so good, and it even got me another 1 or 2 mpg. performance wise there isnt a huge gain but i can notice it pulls harder up top than before. i got mine from www.proficientperformance.com and they had the best price i could find. they also had free shipping and a 30 dollar discount or something when i ordreed with which change every month so id wait for another one to come around.
and i installed mine myself but if you get it "professionally installed" you get a lifetime warranty. i installed it myself not knowing that but it seems like a solid peice and should be good for a long time.