Interior Anyone Put Noise Damping in Interior? - Subaru Impreza WRX STI Forums: IWSTI.com
STI Forum
Join
Start New Thread Create Account Advertise FAQ Members List Contact
Anyone Put Noise Damping in Interior?
Anyone Put Noise Damping in Interior?
Go Back   STI Forums > > > Interior Anyone Put Noise Damping in Interior?
Reply
 
Thread Tools
Old 05-29-19, 06:59 AM   #1
My16STI
Active Participant
Feedback Score: 0 reviews
 
Fav Mod: Coming Soon
My Threads
Posts: 8
My Subaru Parts for sale

Join Date: May 2019
My16STI is an unknown quantity at this point
Default Anyone Put Noise Damping in Interior?

Just got a 2016 STI with 10k on it. I had a 09 Maserati Quattroporte S which got totaled when some douche ran the red light. Coming from a well insulated interior to the poor build quality interior is killing me. Everything rattles - turning up the radio the whole back plastic decking shakes, the interior door panels rattle to the point where I can't enjoy the music. I am guessing others have experienced this and have put in extra baffles/insulation to get rid of it. Anyone have a DIY on it?

Thanks!
My16STI is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Sponsored Links
Advertisement
 
Old 05-29-19, 07:14 AM   #2
TheOtherDave
Advanced Contributor Level 2
Feedback Score: 0 reviews
 
Car: Red 17 STI Limited
Fav Mod: Plugged the engine to cabin sound tube
My Threads
Posts: 241
My Subaru Parts for sale

Join Date: Apr 2017
Location: Northern Colorado
TheOtherDave is on a distinguished road
Default Re: Anyone Put Noise Damping in Interior?

I got some butyl noise deadening mat....Dynamat in my case.


I pulled out rear seat, everything in trunk including side liners.


Then I roamed around thunking all spots with my hands/fingers. Any area that had
a resonance got a piece of the mat until they all "thudded" rather than "plocked".


The most was in the trunk on the sides and in the spare tire well.....as well as under the
rear window deck.


I also put in Dynamat sound deadening foam (heavy 1 inch think material) under the rear seat and under the carpet in the trunk. However I have since removed it because I don't believe it does much for the low frequencies I was trying to eliminate with it.


This made the rear of the car much less "tinny" in my opinion and didn't add to much weight.....under a few pounds (after removing the heavy mat).


The pieces of butyl were mostly < 1x3inch pieces except the spare tire well (larger) and other spaces that were to small for a 1x3 inch piece.


It isn't necessary to cover and entire area....just put enough mass on it to change the resonant frequency. Try and put the pieces in the center of the area you are trying to fix.



Dave
TheOtherDave is offline  
Likes 2 Dislikes 0
 
Reply With Quote
Old 05-29-19, 07:35 AM   #3
My16STI
Active Participant
Feedback Score: 0 reviews
 
Fav Mod: Coming Soon
My Threads
Posts: 8
My Subaru Parts for sale

Join Date: May 2019
My16STI is an unknown quantity at this point
Default Re: Anyone Put Noise Damping in Interior?

got it thanks for the reply! I will pick some of that up and begin the process
My16STI is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Sponsored Links
Advertisement
 
Old 05-29-19, 07:47 AM   #4
DarkSi08
Becoming An Advanced Contributor
Feedback Score: 0 reviews
 
Car: 2018 RS3
Fav Mod: JDM STi Mirrors
My Threads
Posts: 91
My Subaru Parts for sale

Join Date: Jun 2012
Location: Charlotte
DarkSi08 is an unknown quantity at this point
Default Re: Anyone Put Noise Damping in Interior?

Quote:
Originally Posted by TheOtherDave View Post
I got some butyl noise deadening mat....Dynamat in my case.


I pulled out rear seat, everything in trunk including side liners.


Then I roamed around thunking all spots with my hands/fingers. Any area that had
a resonance got a piece of the mat until they all "thudded" rather than "plocked".


The most was in the trunk on the sides and in the spare tire well.....as well as under the
rear window deck.


I also put in Dynamat sound deadening foam (heavy 1 inch think material) under the rear seat and under the carpet in the trunk. However I have since removed it because I don't believe it does much for the low frequencies I was trying to eliminate with it.


This made the rear of the car much less "tinny" in my opinion and didn't add to much weight.....under a few pounds (after removing the heavy mat).


The pieces of butyl were mostly < 1x3inch pieces except the spare tire well (larger) and other spaces that were to small for a 1x3 inch piece.


It isn't necessary to cover and entire area....just put enough mass on it to change the resonant frequency. Try and put the pieces in the center of the area you are trying to fix.



Dave
Thanks for this! Too many people think that you need multiple layers of butyl rubber covering the entire interior of the car... like you said, you really just need enough to change the resonant frequency of the panel and vicinity. If you're going for a competition bank vault, by all means, go for broke. For a daily driver, your recommendation is perfect.

I've used a bit of the foam in-between panels for deadening before, which can help with rattles, if you find the right places. Otherwise, no need for overkill here.
DarkSi08 is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 05-29-19, 11:12 AM   #5
bsowers2018
Contributor
Feedback Score: 0 reviews
 
Car: Crystal Black 2018
Fav Mod: being different and leaving it stock.......
My Threads
Posts: 57
My Subaru Parts for sale

Join Date: Apr 2018
Location: Louisville
bsowers2018 is an unknown quantity at this point
Default Re: Anyone Put Noise Damping in Interior?

Most of the rattle from the rear parcel shelf is the brake light. I did an easy fix, a spring clamp from home depot through the wire hole clamping to the steel from inside the trunk. when it rattles again I know it has slipped. Another rattle is the inside trunk lid lining. I took it off and glued foam to the back and put it back on. I feel your pain about the lower quality, before my 18 I had 5 Mercedes and an Audi.
bsowers2018 is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 06-05-19, 08:22 PM   #6
DocBlackAdder
Silver Member
Feedback Score: 0 reviews
 
Fav Mod: NOT E.T.Tuning in Union,MO
My Subaru Parts for sale

Join Date: Sep 2008
Location: missouri
DocBlackAdder is on a distinguished road
Default Re: Anyone Put Noise Damping in Interior?

If you REALLY want to go all out, go to sounddeadenershowdown.com.
I will say this though, allow over a week to get everything done. (2 weeks for me, but I'm slow)
__________________


The report notes the driver was "alert and conscious" after the wreck. Too bad he wasn't before the impact.
DocBlackAdder is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 06-07-19, 05:46 AM   #7
SonicBoom
Advanced Mastery Level I
Feedback Score: 0 reviews
 
Car: 2019 ISM WRX STI
Fav Mod: Bone stock
My Subaru Parts for sale

Join Date: Aug 2006
Location: Detroit
SonicBoom is on a distinguished road
Default Re: Anyone Put Noise Damping in Interior?

Just got my 2019.. everything rattles. I wish I had the knowledge, experience and time to do something about it...
__________________
2019 ISM WRX STI
Mods: stock for now!
SonicBoom is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 06-12-19, 07:38 AM   #8
kfcheung
Becoming A Contributor
Feedback Score: 0 reviews
 
Car: 2019 WRX STi
My Threads
Posts: 13
My Subaru Parts for sale

Join Date: Jun 2019
kfcheung is an unknown quantity at this point
Default Re: Anyone Put Noise Damping in Interior?

Have you considered trading in for Audi A4? They have manual and it's very similar to STI except the HP numbers. Spending money and effort to fix noise on a Japs car is not worth the hassle.
kfcheung is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 06-12-19, 10:41 AM   #9
Noximus
Advanced Mastery Level II
Feedback Score: 3 reviews
 
Fav Mod: 2015 STI Steering Rack!
My Subaru Parts for sale

Join Date: May 2013
Location: Canada eh?
Noximus is just really niceNoximus is just really niceNoximus is just really niceNoximus is just really niceNoximus is just really nice
Default Re: Anyone Put Noise Damping in Interior?

This here is one of the best threads I've seen. Plenty of members here have done it to their hatch or sedan. There are quite a few threads on it, just search Dynamat or sound deadening.

11 WRX Hatch - Sound Deadening Project - NASIOC

It's a 11 hatch, but the general idea is the same.
Noximus is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Sponsored Links
Advertisement
 
Reply

Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


New To Site? Need Help? More

All times are GMT -8. The time now is 01:43 AM.


Powered by vBulletin
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Designed & Powered by Domain Architect
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.