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Discussion Starter #1
Hey there.

I have a 2006 f250 powerstroke and when the engine idles, I can really hear it through the firewall with the windows closed. What can I use to silence/seal this issue?

Spray foam insulation?

suggestions would be very much appreciated.

Thank you
 

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Here is what I did for my hood. 3 layers in each pocket made it pretty quiet.
 

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