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misterjaayy · 03-12-2018, 06:01 PM

So after doing a little googling I came to the conclusion that the insulation under the hood was most likely for sound deadening and to possibly smother a fire under the hood.

I have the LT4 blower installed on my 2016 Camaro SS, and I wanted to hear more blower whine. So I took the insulation out to see if I noticed a difference. The insulation is held in by just clips so it was a snap to get off and the sound difference was definitely noticeable. During normal acceleration around town you can hear the whine probably 50 percent more and under WOT you can hear it scream.

The only downside is I notice a slight uptick in IATs. Maybe five degrees or so. My guess is the roto fab intake doesn’t seal as well to the hood without the thin layer of insulation so I may cut out a piece to fasten to where the intake meets the hood.

Manage your expectations. I’m not talking about Hellcat levels of whine but if you have a blower installed you may want to give it a try.

-J-

03-12-2018, 06:01 PM	#1
misterjaayy Drives: 2019 CTS-V Join Date: Feb 2016 Location: San Diego Posts: 421	Under Hood Insulation Removal So after doing a little googling I came to the conclusion that the insulation under the hood was most likely for sound deadening and to possibly smother a fire under the hood. I have the LT4 blower installed on my 2016 Camaro SS, and I wanted to hear more blower whine. So I took the insulation out to see if I noticed a difference. The insulation is held in by just clips so it was a snap to get off and the sound difference was definitely noticeable. During normal acceleration around town you can hear the whine probably 50 percent more and under WOT you can hear it scream. The only downside is I notice a slight uptick in IATs. Maybe five degrees or so. My guess is the roto fab intake doesn’t seal as well to the hood without the thin layer of insulation so I may cut out a piece to fasten to where the intake meets the hood. Manage your expectations. I’m not talking about Hellcat levels of whine but if you have a blower installed you may want to give it a try. -J-