i was just wondering what u guys have used for sound deadening under your carpet????

 

i put in some stuff called" Remote Sound Defuser" there based out of virgina, and im not sure if they have a website, but i found out about them from a swap meet. They sell the stuff bu the yard at $12 bucks so not to pricey and i ran it in the roof and the floor and dont have any propblems with it, it keeps that loud exhaust note out, and cool/hot air in

 

so has any one else have used any othe products