Rickdod3
10+ year member
CarAudio.com Elite
I used audiowrap and audio technix. I put 3 layers of it on my roof...3 layers on my doors and 3 layers on my hatch...and yes it gained me that much.which deadener did you use ?? and did you just use it on the doors and roof and gained that much ??
BUT.
That doesn't necessarily mean you will gain as much as I did...but you will gain.