K in the process of dynamat and my question is how do you guys dynomat the trunk lid. Do i just fill the whole lid with the stuff or just some? Pics and explaination would be great.

Learning how to do this all by myself to save a few bucks on other mods and you guys have been so helpful with a lot of things figure I asked.

 

you might find what you need here ......good luck!

https://g35driver.com/forums/audio-video-electronics/50569-sound-deadening-g.html

 

Hey shooter thanks for that link

Now i saw the trunk lid pic, did you cut a few piece of the dynamat in some area and just fill the whole lid with foam? I am afraid to fill it with foam cuz I am not sure it be hard to clean up if say one day they need to do electrical work cuz I do see wires going between the lid. Any advice? Also I am dynamat the whole trunk of course there will be some space that is hard to do should i be concern that not 100% of the trunk is cover?

Also how do you remove those clips that holds the wire?

Also do I dynamat the area where the two mids are placed?

THanks for all your help and advice in advance

 

Just stick the mat to the whole underside of the lid. Leave access to holes for grommets and electrical. Do not cover over the emergency release cable. If you want it pretty, trim the mat to just short of the edge of the cover. Put cover back on, you're done.

If your cover is rattling, take it off, store it. Don't bother using foam in there - won't buy you much other than creating a superb solid material for sound to travel through. If you still want to do something, try holofill - like you'd use in a pillow or sub box. Oh yea, cutting dynamat (xtreme anyhow) ... use pieces as big or small as you like. As long you make it adhere - it'll make one unit once it's on.

P

 

There is a lot of good information on the net about sound deadening (most of what i have learned is from a professional car audio installer). There are many different ways and levels of sound deadening to achieve the desired result, only you can decide how much time, effort and money you are comfortable with spending.

In this thread you have been given 2 opinions..........

Option 1 - "dynamat the whole thing" (a popular path)
purpose - damping
pros - easier, quicker installation (compared to option 2), good damping
cons - more expensive, more weight, does not provide good absorption IMO

Option 2 - foam, insulation, padding, minimal dynamat
purpose - damping and absorption
pros - lighter, less expensive, good damping and absorption
cons - longer installation time

Damping
Damping products (dynamat, brown bread, etc.) are flexible viscoelastic and constrained layer products designed to reduce structural vibration from impact sources and panel resonance. These products can provide significant modal damping to the structure thereby reducing sound radiation from the structures. But you do not need to cover the structure to obtain the desired result! An appropriately sized patch place in the middle of the panel will provide the same damping as a complete covering.

Absorption
Foams are designed to reduce reverberant airborne noise. These foams absorb the noise created by vibrating air molecules by converting the acoustic energy into thermal energy as a result of frictional dissipation through the structure. Attic insulation (and holofill or polyfill) will also perform this task to fill large volumes (in between the outer skin and the inner body panels).

If you plan on using spray foam, please read the thread on "Sound Deadening the G..." and pay special attention to the correct type of foam and the installation method. As with any DIY you must use common sense.

shooter

 

Thanks Shooter! Do you have any rattles in your roof? That's where most of mine are. What do you recommend there?

 

The only rattle I have is when the sun/moon roof cover is slid back.....it will rattle a little bit up there......hasn't bothered me enough to do anything about it yet