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The Prius is a very nice car out of the box. Its really quiet. Im going to try to make it REALLY Quiet. Ok, So Im obsessive compulsive. So are you or you wouldnt be reading this!
Using one-inch thick professional soundproofing heavy foam. Its rated for aircraft use and is very fire resistant and designed for use in engine compartments. The foam does not hold water and is not affected by oil.
The plan is to fit a blanket to the inside of the hood to mask engine noise coming through the windscreen. Also, removal of the plastic wheel well liners and using adhesive, make a noise barrier around the tires and into the quarter panel. Then reinstall the liners. Lots of road and tire noise is channeled through the quarter panel into the interior. Lastly, cover the floor under the rear seat and in-between the cheap barrier in the trunk including the speakers. This should remove any road rumble from the rear.
I will let the group know how it works out.
Have fun.
Larry
Using one-inch thick professional soundproofing heavy foam. Its rated for aircraft use and is very fire resistant and designed for use in engine compartments. The foam does not hold water and is not affected by oil.
The plan is to fit a blanket to the inside of the hood to mask engine noise coming through the windscreen. Also, removal of the plastic wheel well liners and using adhesive, make a noise barrier around the tires and into the quarter panel. Then reinstall the liners. Lots of road and tire noise is channeled through the quarter panel into the interior. Lastly, cover the floor under the rear seat and in-between the cheap barrier in the trunk including the speakers. This should remove any road rumble from the rear.
I will let the group know how it works out.
Have fun.
Larry