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CMD
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Completely sound deadened trunk, floorboard + interior.
Total material used = ~60-70 sq ft
Total man hours = 12 hours (my buddy and I)
Results = Back is killing me and can't feel my legs. Other than that, results are fantastic. EVERY SINGLE creak, crackle, rattle, pop is gone. Audio sounds better than ever, actually had to turn down the treble as the highs were too strong. Guess I had to crank the treble up given the interior was so noisy previously.

That is all... enjoy the pics!

Front interior stripped out. Notice the crappy sound deadening material Nissan put in on the right... it was brittle, shrunk away from the metal frame (visible from the paint imprint), and broke off easily.


Rear interior stripped. Those covers that lead to the fuel pumps are like chatter boxes...!


Had to double up on some of the trunk area as they sounded extremely resonant when tapped.




Stuck a piece out on the rear fenders because of easy access once the trunk lining was out. See those flappy vents?... those are why we smell gasoline sometimes in the garage.



Rear of interior deadened.










Space shuttle GT-R, prepared for take-off.
 

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That's a lot of work (!)
 

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Damn, I would like to do that too. Looks like a massive amount of work.
 

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CMD
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Thanks for the kind words fellas, and yes it was something else. Everything's gotta be taken out in the right order + lots of plastic latches/clips that take just the right mix of tender loving care and brute force + making sure you don't scratch the stuff remaining when moving the big ticket items like chairs. The sound deadening stuff was REAL easy to apply, just time consuming.

(My car always had weird rattles here and there... they just got a whole lot worse after putting in a full exhaust system.)

The interesting part is you really get to see where Nissan cut some corners. I mean, there were the small things ... like felt pads between panels that were off the mark, wires that were partially contained, etc. And then, there were the obvious items that had to be causing rattle issues:

1) That plastic grill in the middle of the trunk that backs to the subwoofer... when we took out the trunk lining, the damn thing just fell out. As loose as it was, it had to be a source of rattle. I don't know if it was the heat that deformed the clips, but those clips were no longer functional. Nothing a little modifying couldn't help: Added some depth to the clips and lined the plastic with some felt lining. Afterwards, the thing clipped on nice and strong.
2) The bottom of the rear speakers just hang loose into the trunk area and can be pushed up like cups. Put a bunch of the sound deadening material around it and attached it to the frame next to it. That thing is not moving at all now!
3) After removing all the interior pieces, there were these quasi-plastic gray metallic painted pieces that just fell off the metal frame (... all while leaving a nice amber colored glue that hardened and lost its adhesiveness over time). As it turned out, it looked like some crappy sound deadening material Nissan took the time to install, but because of the heat from the bottom of the car, the pieces hardened and were basically brittle/hanging loose. We stripped all that crap out (quite easily) with just some panel removal tools.

Very happy with the results. So quiet in the car now, all you hear is the exhaust note and/or the music.
 

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CMD
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Discussion Starter · #9 ·
Thanks for the great write up..i`m pretty tempted!..
Any idea how much weight in the 60-70 sq ft of material?
Based on B-Quiet's website, the Ultimate is 0.35lbs/sq ft. So, that's about 21~24 lbs.

I shed quite a bit of weight from the exhaust system being swapped out, so I'm not too concerned. Plus, this is a 4000 lb car... 20 or so pounds isn't going to make a world of difference.
 

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How long would it take if you did it again? I bet a few of us would love a detailed DIY with more pics
 

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CMD
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Discussion Starter · #12 ·
How long would it take if you did it again? I bet a few of us would love a detailed DIY with more pics
Honestly, I would probably take longer instead of doing it all in 12 hours straight. It was brutal... being 6'2", you really got to expand your horizons when it comes to being hunched over (often in a tiny confined space) for that long of a time. But, with 14 energy drinks and several packs of cigs, we were men on a mission... and I'm still paying for it dearly, haha.

I really wish I had more detailed DIY pics, but given we tried our best to power through the job, I only had time to take pics here and there. I can help to provide feedback on which parts to remove first and which items I felt were the worst acoustic offenders though.
 

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My 2012 is already starting to rattle, I have to take a look at the rear speaker shelf as it seems to be the cause.

Great job, im sure the car is much nicer to drive in now.
 

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CMD
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Discussion Starter · #14 ·
My 2012 is already starting to rattle, I have to take a look at the rear speaker shelf as it seems to be the cause.

Great job, im sure the car is much nicer to drive in now.
Thanks man. I am somewhat shocked that the 2012s still suffer from the same issues. It looks like Nissan went ahead and applied the same level/amount of sound dampening material as the Altima/Maxima. Common sense would tell you that a car with this much power would require much beefier sound/vibration deadening.
 

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I did this a while ago on my GT-R and never posted pictures. Luckily I had access to the GT-R exploded views so I had the entire interior out in about 40 minutes. Best $100 you can spend on the car. Applying the B-Quiet takes some time. My back hurt for about 3 days! Only problem now is the interior is so quiet from rattles, transmission and drone, you only hear the tire noise. Never realized how bad of tire growl there is.

I went one step further and installed this extra insulation in the trunk, rear seats, trans tunnel, and footwells. No more warm cup holders and hot backseats. Car doesnt have a single rattle. If someone is going to do a DIY, I can get them the exploded views from nissan that show all of the clips location.

http://www.aircrafts.../insulator1.php
 

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CMD
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Discussion Starter · #16 ·
I did this a while ago on my GT-R and never posted pictures. Luckily I had access to the GT-R exploded views so I had the entire interior out in about 40 minutes. Best $100 you can spend on the car. Applying the B-Quiet takes some time. My back hurt for about 3 days! Only problem now is the interior is so quiet from rattles, transmission and drone, you only hear the tire noise. Never realized how bad of tire growl there is.

I went one step further and installed this extra insulation in the trunk, rear seats, trans tunnel, and footwells. No more warm cup holders and hot backseats. Car doesnt have a single rattle. If someone is going to do a DIY, I can get them the exploded views from nissan that show all of the clips location.

http://www.aircrafts.../insulator1.php
I'm pretty sure it took us a whole lot longer than 40 minutes, but I would say 70-80% of the time was laying out the many sheets of the sound deadening material. With the interior and trunk stripping, we were taking extra precautions not to rip clips, break plastic pieces, etc... we could probably do this part much quicker the next time around.
 

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I'm pretty sure it took us a whole lot longer than 40 minutes, but I would say 70-80% of the time was laying out the many sheets of the sound deadening material. With the interior and trunk stripping, we were taking extra precautions not to rip clips, break plastic pieces, etc... we could probably do this part much quicker the next time around.
I have access to the Nissan FAST database, so yes, it took me 40 minutes. Shows you the location of all the clips and part numbers so I ordered a few spare clips. I did have a buddy helping with the other side. I did not take out the front seats. I pulled the carpet back as far as I could. Pretty much right up to the seat rails. I figure the 2 square feet under the seat arent that big of deal. That alone could take a hour! I agree. about 8 hours spent putting in sound material.
 

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Brother, when will you be in Maryland? Seeing your work, I am ready to sign the contract - - I need same done.! Very nice!
 

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CMD
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Discussion Starter · #19 ·
Brother, when will you be in Maryland? Seeing your work, I am ready to sign the contract - - I need same done.! Very nice!
Wasn't planning on making this a money making endeavor... but hey, not a bad idea!


BTW, realized today that some of the bass heavy tunes sounded a bit flat. So, tore out the backseats and realized I covered two holes I probably shouldn't have. After cutting them out and removing the material, highs are clear and bass is bumpin' harder than ever. Just FYR in case you guys plan on doing this, don't cover the hole behind the backseats as noted below!:

 

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Nice work. I had raammat bxt II and the ensolite put in the interior of a van including the ceiling, doors and I wasn't blown away with the product. Is B-quiet ultimate better product?
 
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