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Discussion Starter #1
At 330k miles, my LLY OEM Firewall blanket is Kaput.....

Anyone buy the PPE one?

Thoughts?

I'm looking for noise reduction, more than anything.

1080570
 

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Sounds like a very good idea. Are OEM blankets still available?
 

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Former GM Tech and parts
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To be honest, I don't feel like I had much of a noise increase in my truck when I took the insulation off the firewall. It had been torn a little but wasn't in horrible shape, so its not like it was just remnants left that weren't doing anything before I took it off. But I didn't want it laying on a blazing hot downpipe or up pipe after a sled pull, so thats why I pulled mine off. Plus, being in the rust belt, I wanted to get rid of anything that would hold moisture and material next to the metal to prevent rust issues
 

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I have the PPE blanket on my LLY and I didn't notice any change in engine noise. Sounds the same as the stock one. Still worth it in my opinion though if replacing the stock insulation.
 
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