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Additional Sound Proofing?

NEPABuick

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Sep 14, 2019
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Location
NE Pennsylvania
Buick Ownership
2018 Buick TourX
I do agree with many that the level of road noise of the TourX is not bad, however, I believe it can be better. I have noticed, especially in the rear, that the cargo floor is not insulated at all. Has anyone considered adding more sound dampening to the TourX or have had success with another vehicle.
 
you could install Dynomat or the cheaper Walmart stuff in the car audio section.
 
I will be doing additional sound deadening, but it is for the car audio system I have been planning.

If you are going to do additional sound deadening use the vinyl based products, not the tar/asphalt based. Sure the tar/asphalt based is MUCH cheaper, but has many negatives. The vinyl based will not melt and move/slide into places you don't want it to like the tar based stuff does. Then comes the very messy and time consuming cleanup and the $$$ to redo (and replace stuff that you cannot clean the tar out of, i.e. power window motors/tracks). The vinyl based also doesn't have the long lasting smell that the tar based does. The tar based will smell for months and the smell will return every summer for years. If you can't tell, I've been there and done that and will not repeat the mistake. Spend the $$$ up front.

An addition bit of information on sound I've learned through the 40 years of doing car/home audio with #1 being the most important.
1. You can spend a huge wad of money/time and not achieve the level of quietness you desire because it is a vehicle, that has hundreds of moving parts, that rolls on tires, that must roll/travel over whatever is passes for "road/highway" in you area.
2. Sound deadening is a multi-part system. First is peel and stick (or spray) that lowers panel resonance (sheet metal in floor/firewall/roof/doors, door panel/card). Second is closed cell foam to dampen high frequencies. Do not use open cell foam; it holds water, closed cell foam doesn't. Third is "mass loaded" materials to dampen low frequencies. It is important to decouple the mass loaded material from the base material (i.e. floorpan) with the foam barrier or the mass loaded material will just transfer and amplify the sound/noise.
3. You don't have to have 100% coverage to get good results. 40% to 60% coverage will get big results without big expense.
 
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Buy a pair of AirPods Pro and you will feel like driving a Rolls Royce minus the ride.
 
Buy a pair of AirPods Pro and you will feel like driving a Rolls Royce minus the ride.
Or maybe Jabras, which are much less conspicuous to police (and much less derpy-looking).
 
I am planning to install Dynamat inside doors and spread out Dynaliner between plastic panels and metal. I had some leftover Dynaliner from my previous car, I cut a few pieces out of it and stuck it under plastic panels in my liftgate and WOW! They eliminated a terrible rattle in the liftgate. Dealer told me there is a welding spot that is missed on 2018 Sportback liftgate, so liftgates make a cracking noise. They welded it, but the noise was still there. They ordered a whole new liftgate for me, but it looks like Dynaliner fixed the rattle.
 
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6appeal I appreciate the feedback. At the moment I am looking to install a new subwoofer to replace the stock unit, either with the JBL or Cerwin Vega. I am closely following your other thread about audio in the TourX. Currently I plan on applying dynamite or noico in the entire rear end of the vehicle, based on your experience where else should I consider.
 
6appeal I appreciate the feedback. At the moment I am looking to install a new subwoofer to replace the stock unit, either with the JBL or Cerwin Vega. I am closely following your other thread about audio in the TourX. Currently I plan on applying dynamite or noico in the entire rear end of the vehicle, based on your experience where else should I consider.
Every vehicle is different. So I cannot put a finger on what works the best in a TourX or Sportback. As I said above you don't have to do 100% coverage to get good results. Dynamat is a starting point, but I would suggest 1/8" foam between your new sub enclosure and the Dynamat. You will need to do more than the floor. You will most likely need to add some on the side panels and the rear liftgate to cut down on rattles. But that will depend on how much more sub bass is created. Attempting to get a start on mine, but the shop I plan on using is jam packed.
 
I am planning to install Dynamat inside doors and spread out Dynaliner between plastic panels and metal. I had some leftover Dynaliner from my previous car, I cut a few pieces out of it and stuck it under plastic panels in my liftgate and WOW! They eliminated a terrible rattle in the liftgate. Dealer told me there is a welding spot that is missed on 2018 Sportback liftgate, so liftgates make a cracking noise. They welded it, but the noise was still there. They ordered a whole new liftgate for me, but it looks like Dynaliner fixed the rattle.
Did you remove the life gate trirm? If so, how does it come off?
I would suspect a pry tool (body panel puller) and yank.
 
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