Srt-68 Barracuda

The reason it is not quieter is because it is a temp barrier not a sound barrier.

You will need something like lizard skin or Hush mat to really quiet things down. The Hush mat acts as a vibration dampening mechanism....disrupts sound waves and vibrations and thus quiets your car....by coincidence and due to its reflective foil cover it also acts like the product you are using which is a temperature control mechanism.

Put the carpet on and it will be a bit quieter but more importantly less HEAT in the coming months.

Mop