A friend of mine on this board (NVetro) has the Jet Hot LT's, no cats, and the loudmouth. Its VERY loud and takes getting used to. Even my car with Jet Hot's, Carsound Cats and the loudmouth is loud, but the cats give it a bareable idle. At WOT its rediculous.

 

Yea if you stand between the 2 tailpipes and rev to about 4,500 - You'll be screaming

 

Hooker LT's offroad y-pipe and loudmouth here
i like it, it has a cackle at about 2500rpm's but thats it, sounds good to me other then that tho
and yeah it ****ing screams there is no sneaking in and out of your mistresses neighborhood with this setup

http://www.unrealhp.com/gir/gir100703.html
if you want to hear what it sounds like with Headers, the 1st video on that page (top left) is me at GIR, you cant even hear the Mustang

 

SLP Headers+Ypipe+Cat+Loudmouth = Awesome sound IMO

i love the sound of my car

Once i get my heads and cam done ill post some sound clips