04-03-2018, 11:48 PM | #134 | |
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He's right, this door strip was missing on my 2016 235i, I replaced it but I really can't say if it makes a difference but some people claim that it does.. Be warned, it was pricey, I paid $50 for each side... Keep us updated.. http://www.2addicts.com/forums/showthread.php?t=1200964 Last edited by Poochie; 04-03-2018 at 11:56 PM.. |
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04-04-2018, 07:03 AM | #135 |
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From what I have seen so far is most of the removed insulation is in the back. There is a piece on the firewall that would be impossible to replace (in one piece anyway) without taking the dash apart completely!
I have not played with the doors yet but I notice in the "Body" section of RealOEM that the insulation is shown for the doors. For some reason they do not show it in the "insulation" section. So the doors are likely as "quiet" as the F22.
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04-04-2018, 07:19 AM | #136 | |
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I'm not a big user of this stuff. I tend to use a local rubber backed foam product. The stuff I contact cemented in that hole in the pic. If you don't mind spending the money the original part is best to fill that hole. I'm only using Dynamat because I have it and don't want to wait for 2 weeks for the real part. To remove the side panel out you pull forward both the bolsters (they come off) then pull the panel from the bottom up. It just pops of - pull from the front to the back. You need to remove the "threshold" strips before doing this. They pull up from the front to the back.
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04-05-2018, 05:39 PM | #137 |
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Back insulation done! You have to detach all the wiring. Then slid the insulation under and clip it back. Took about 4 hours total. I wanted to do it right. Also it was snowing for some of it!
As I said in one of my previous posts the Dynamat over those holes will kill a lot of high frequency noise from the rear. The proper part would likely do a better job as it is more ridged.
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04-05-2018, 07:24 PM | #138 | |
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Do u know what is the original part number for the thing you made out of dynamat? |
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04-05-2018, 09:00 PM | #139 | |
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Cover L 1x 41007294289 Cover R 1x 41007294290 Part will likely have to come from Germany.
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04-05-2018, 09:05 PM | #140 |
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What about that cover on the underside of the hood?
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04-05-2018, 09:16 PM | #141 |
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You can find these parts yourself on realOEM....
51487221993 Sound insulation, engine compartment 51489119216 Clip for above x 18
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04-05-2018, 09:17 PM | #142 |
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Thanks very much. I tried that. Got lost )
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04-05-2018, 09:54 PM | #144 |
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@GregoryK Hey, seriously, great job! I never seen someone actually added back sound deadening but I understand and respect your decision; if the noise doesn't add to any performance, I find it cacophony (waited since college to use that word, finally)...
The db level, are you going to get a post-reading update to confirm its effectiveness? |
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04-05-2018, 10:16 PM | #145 | |
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Realoem says it is there already. http://www.realoem.com/bmw/enUS/show...02#41007294289 how do u know what they put there? |
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04-06-2018, 06:24 AM | #146 | |
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I'll contact my dealer and fly it up the flagpole to Germany to find out.
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04-06-2018, 06:28 AM | #147 |
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Mate. Take a look at my post on page 6 highlights what parts I ordered. As I said early I have not taken the doors off yet but think they already have the insulation that I ordered.
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04-06-2018, 04:06 PM | #148 |
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When are u going to measure the noise?
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04-06-2018, 04:36 PM | #149 | |
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04-07-2018, 11:06 AM | #151 |
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I have a 2017 PE with the performance exhaust. I bypassed the ASD but didn't see a noticeable change. I then had the trunk rear wheel wells and under back seat insulated. That cut the hwy noise by 30-50% as best I can tell. The exhaust noise at 3000 rpm on the road is not acceptable where before it was annoying.
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04-07-2018, 01:10 PM | #152 |
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I still have to put the rear seats back. When done I'll do measurements before installing the fender seals.
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"I would rather cry in a BMW than smile on a bicycle." Ma Nuo Last edited by GregoryK; 04-07-2018 at 06:26 PM.. |
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04-07-2018, 06:31 PM | #153 |
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So much quieter to my ears. Still a little disappointing 78.1db down from 82db all @ 120kph (70mph)
The car is 67.db at idle. I'm using a crappy app to measure these by. Honestly was hoping for 72 db! Still have to do the doors and front though. Stand by for updates.
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04-07-2018, 07:29 PM | #154 | |
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