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Old 12-03-2012, 08:01 AM   #51
KManZ
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Member#: 220694
Join Date: Aug 2009
Chapter/Region: MAIC
Location: Fairfax, VA
Vehicle:
2012 STi
Satin White Pearl

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Quote:
Originally Posted by Snow Drift View Post
Do you have leather? I do and I get this same problem. The dealership can't do anything (as far as I know).

Here is my fix:

(might not be the right measurements, just for reference)
http://www.homedepot.com/buy/frost-k...rip-ac42h.html

Lay that between the back of the seat and the rear shelf, close the seats. That will put a nice cushioned barrier between and gets rid of the sound. Also, the dark gray color looks stock.
EDIT: sir, what is your Paypal address, so that I can send you a fricken reward! The nightmare is over, thank God!

I don't have leather, but the rear seats are "topped" with leather, which is contacting the rear deck lid. I will try this out tonight for sure, thanks for the tip!
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Last edited by KManZ; 12-03-2012 at 07:42 PM.
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Old 12-29-2012, 05:54 PM   #52
flk
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Member#: 280838
Join Date: Apr 2011
Chapter/Region: Tri-State
Location: Syracuse
Vehicle:
MY12 WRX DGM
EFI Stg2+

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Quote:
Originally Posted by SPTTuner View Post
i foamed the crap out my rear deck and noise has 80% stopped...i think the rest of the noise might be the both sections of the C pillar... going to check that tomorrow
After I took care of the rear shelf, I was still getting some rattles from the C-pillar. I fixed it by doing this:



Quote:
Originally Posted by KManZ View Post
I've been attempting to track down the worst ****ing rattle in my '12 sedan... I've performed this tutorial twice already, I've stuffed more dense foam up under the rear deck lid as can be stuffed under a rear deck lid, and am still plagued by this creaking. It sounds like a tinny, higher pitched creak, not so much a vibration. Every little bump, side-ways motion, even louder than normal farts set the creaking off, and i can't take it anymore.

So I hired my roomate to ride in the rear to narrow down the cause, and I believe I've found the answer: the rear seat, namely the 2/3rd's side, is rubbing against the rear deck lid, causing the noise. I folded down the seats, and the sound isn't there. The smaller side in place, no sound. The bigger side: BAM! Annoying-as-**** creak returns.
The creaking is very annoying over bumpy roads. Here's what I did to fix:



Quote:
Originally Posted by yudangorgor View Post
with the car lowered now, my front dash is rattling and squaking.. is there a write up tutorial on how to remove the components of front dash?
I found out it was not my front dash, rather the A pillars. Take them off then put stickies around the edges like how I did the C pillar, with focus on the tabs that fit into the dash itself. Hope this helps!
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Old 01-07-2013, 12:13 AM   #53
cambios12
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Member#: 319866
Join Date: May 2012
Chapter/Region: RMIC
Vehicle:
2012 WRX Limited
WRB

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To the op, thanks for the write up. Did my rear deck today with foam trim and dynamat. Huge difference, and more importantly, no rattle! I have a decent sub setup and the rattle was annoying as all hell.
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Old 02-01-2013, 02:57 PM   #54
Tyrial
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Member#: 284392
Join Date: May 2011
Chapter/Region: South East
Location: North Charleston, SC
Vehicle:
2011 STI Limited
Plasma Blue Pearl

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Quote:
Originally Posted by rex.effect View Post
Any updates from people who dynamat'ed the whole rear shelf? What about matting the c-pilars? I am not trying to avoid doing it a cheap way, rather want to sound deaden most of the rear anyway.

Did any complications arise when matting the whole area? Are there certain locations I should avoid so that the shelf returns to it's place properly?
I have Dynamat on the entire rear deck and C pillars and it still rattles like crazy. The rattles are due to plastic-on-anything contact and are only solved by placing foam or something soft for those pieces to contact in between the plastic and whatever else it was touching.

The rear deck transmits a lot less noise, but it did not 'fix' the rattles.

Last edited by Tyrial; 02-04-2013 at 12:21 PM.
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Old 02-01-2013, 03:25 PM   #55
flk
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Member#: 280838
Join Date: Apr 2011
Chapter/Region: Tri-State
Location: Syracuse
Vehicle:
MY12 WRX DGM
EFI Stg2+

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^The rear deck needs spot treatment with felt between rear windshield and shelf, also foam tape between the front edge of shelf that presses against back seats (this completely eliminates creaking/rub sound for leather owners. Lay some towel/old underwear between the shelf and the rear deck and you're set. Also needs C pillar edge foam/felt, the part that meets the rear shelf and windshield.

Front A pillar edges need treatment like my post above. B pillars don't rattle for me. Door rattles need ensolite/foam per their website recommendations and it's all gone. With just those fixes you've eliminated 95% of all rattles.
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Old 02-02-2013, 04:06 AM   #56
geddesk2
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Member#: 119397
Join Date: Jul 2006
Chapter/Region: NWIC
Location: Snoqualmie
Vehicle:
2012 STI
WRB (The only color)

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I've got my doors and a pillars done, will be working on the rear deck lid this weekend! Its amazing how quiet my car is by doing the doors with raamat, ensolite, and mlv.

I think I am going to do a solid layer of raamat on the deck lid metal surface and cover the inner side of it with ensolite along with felt tape on all the seams.

Now if I only had the courage to take out my carpet...
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Old 02-02-2013, 03:50 PM   #57
Subirex09
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Member#: 207880
Join Date: Apr 2009
Location: CT
Vehicle:
2013 STi
Awesome SWP

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So you are going to do raamat on the metal and the ensolite on the inside of the plastic rear deck cover?

That's a good idea if I am understanding correctly. When I did my '11 rex, I did both layers on the sheetmetal and ended up with a little higher of a rear deck cover than original because I couldn't get it to sit as flush as it was prior.

I will have to redo this job since I just traded in for a '13 Sti in Dec and I think I will take your approach this time.

One thing I did notice is that the Sti door speakers don't rattle anywhere near as much as the Rex's did, maybe they took out those little white boxes in the doors everyone always talks about.
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Old 02-04-2013, 12:21 PM   #58
Tyrial
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Member#: 284392
Join Date: May 2011
Chapter/Region: South East
Location: North Charleston, SC
Vehicle:
2011 STI Limited
Plasma Blue Pearl

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Quote:
Originally Posted by Subirex09 View Post
One thing I did notice is that the Sti door speakers don't rattle anywhere near as much as the Rex's did, maybe they took out those little white boxes in the doors everyone always talks about.
Nope, those crush boxes are still there and annoying as
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Old 07-11-2013, 10:21 PM   #59
SpartanSTi
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Member#: 286884
Join Date: Jun 2011
Chapter/Region: MWSOC
Location: Moore
Vehicle:
2011 STi Sedan
OBP

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great write up! Thanks
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Old 10-12-2013, 07:33 PM   #60
dragoryte
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Member#: 277733
Join Date: Mar 2011
Chapter/Region: MWSOC
Location: Louisville
Vehicle:
2011 STi 4D
Silver Spark Metallic

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I am having trouble getting the rivets to line back up when putting it back in. Did anyone else have that problem and if so, what are your suggestions?
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Old 05-09-2014, 04:06 PM   #61
xxKnight48xx
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Member#: 368492
Join Date: Sep 2013
Location: Florida
Vehicle:
2012 Impreza WRX
Black

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Bumping for anyone new with this issue, I followed this write up and im 99% sure that the issue is gone. Do yourself a favor and spend the $10 on the foam tape and take the shelf apart. Cover anything you might think may make contact and do the point in the OP as well. Also it may help to put some on your C pillars as well.

Great write up, thanks!
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