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      11-26-2021, 04:34 PM   #17746
SilverSlug
Hey, where have you been all my life?
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Drives: 2011 M3 6MT
Join Date: Jul 2018
Location: San Francisco, CA

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Originally Posted by sparayno1 View Post
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Originally Posted by Idfkman View Post
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Originally Posted by sparayno1 View Post
I made a glass plenum that sounds better than a carbon plenum: https://youtube.com/shorts/2L_IfQh1ENk?feature=share
Have been contemplating doing this since I saw a FB post about it this week.

Did you order a spare plenum for this project or do it to the one on your car?

Trying to gauge the potential of me ruining my plenum and needing to order a replacement while trying this.
I ordered a spare plenum on eBay for $150 just in case I messed up, but it is fairly forgiving since you can cut a little more or sand it smooth. Just cut less than you think so you can make adjustments. I plan on keeping the spare plenum for smog checks in California. They probably won't pass a modded plenum lol.
Wow is it actual glass? Or some type of polycarbonate plexiglass?

How do you adhere it to the plenum?


Edit: Found a video on Youtube that shows how to do it, and parts list…

Is the same procedure you followed?
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