I have been looking for some ways to get my Max's overall sound down to a minimum. When I'm in the car I hate that loud hum and drone from the road and engine, I want to inside to be as quiet as a bank vault. What are some ways you guys have cut down on the overall outside noise?

Insulation foam?
Dynamat? (even though it's very minimal in actual noise reduction)
Replaced the weather stripping?
Any other ideas?

 

Ask Anton (SWEETSOUND2001)...

 

Buy some dynamat that really helps out alot

 

Hmmm, don't know how/where to get it, but if you can find some automotive sound insulator you can try stuffing that into any spaces you can find (just make sure it doesn't block anything of course). You can add an extra layer of that stuff to the back of the rear seat too I suppose.

It might be hard, but I think a good thing to do might be to add another layer of sound insulation under the carpeting (or exchange it for better/thicker material).

Making sure all the windows and doors seal up perfectly with no air leaks/gaps is a good idea I agree.

I've also heard undercoating helps noise a bit but don't know how big a deal this would be since it's just a solid layer of "tar"...

 

do you have exhaust work done?

 

If you go with the Dynamat or acoustic barrier method, it'll take a lot to get the results you want.

Just adding a few layers or two won't be too effective. You'll be needing at least three layers on a panel, plus if possible, a different type of sound deadener, such as foil backed heatshiled, open-celled foam, etc.

 

After reading all this.. i think he will keep wat ever he has right now

 

yea basically, or go commit suicide.

 

hopes and dreams

j/k the above stuff and maybe get your car undercoated to cut down on road noise. I'm never heard somebody with a stock maxima complain about noise before.

 

Dynamat, or cascade or ramat it's all the same. And some rubber compound for the floor.

 

the best thing to do is sell the car. If it has noises its no good

 

Actually my car isn't stock. I have 18" rims, Y-pipe, and Greddy exhaust for the performance part of it. I am thinking of going with a smaller wheels and some tires other than Z rated, hopefully that will help. I know the dynamat route isn't the best way to since it's more for vibrations that reducing noise. Any other ideas??

 

Use header wrap on your exhaust?

SuDZ

 

Its the Y and Greddy that killing him believe me I know

 

So do I just deal with it or is there some way to calm the sound down. I don't mind the engine noise so much, it's the road noise and wind that is getting to be annoying. I am thinking of replacing the weather stripping in the doors, has anyone ever done this?

 

im in the same boat you are. im tired of hearing the exhaust and rattles in the car. my trunk area is also a big part of it too from my stereo.. this is my plans thus far.. as far as the trunk lid and quarter panels, im in the process of filling everyting thats hallow with expanding foam. i did the trunk lid yesterday. i pulled down the cover and filled all the hallow metal "beams" first, and did all the empty space by the tail lights. you'd be suprised just how much space there is in there. then i put the 4 clips back on the bottom row, and shot foam in to fill in all the space between the metal and the cover so its totally solid. next ill be filling in the quarter panels completey behind the carpet. my fried did this and his trunk closes with a solid "thump" now. for the doors, im gonna try and buy insulation styrafoam(spelling?). the kind that comes in sheets that you can buy in a home store. im gonna try to cut it into strips to fit behind the widow tracks(if possible) and use liquid nails to adhere them to the inside of the door skins so it wont interfere with the window going up and down. as far as door pannels, im gonna insulate them too. if you ever heard of "pergo flooring" for your house, they make an insulation that lays beneath their flooring on top of your old floor. its a very thin and dense foam/rubber. im planning on using two layers of that on each door panel. i want to cut it in the shaped of each panel, and use spray adhesive to make it stick to the metal door frame. also, sears make the perfect foam carpet padding to use to cut down on rattles and noise. its not like the recycled foam carpet pads most places sell, with just chunks of different stuff stuck together. its just a sheet of foam, available in different thicknesses and density. i wanna use spray adhesive and stick it rite to the back of my door panels. its nice and soft and should sqish rite in for the tight fits and expand a lil for the crevices. so each door would have two layers of the pergo insulation, a layer of carpet padding from sears, and styrafoam glued to the inside of the door skins. i also plan on pulling the carpet out of the car and putting some sears and pergo stuff under that too.. this stuff is pretty cheap also.. the pergo stuff is like 12 bucks for a pretty big roll, and the sears stuff (not the cheapest or the most expensive) was like 100 or 120 for an entire roll i believe.. you should do the back of your backseat and the fire wall by your pedals too.. if i do all this and my car still makes noise inside i think i just might give up and burn it instead.. lol.. hope this gave ya some ideas.. if anyone has some better ones im all ears

 

Hmm... your car isn't stock eh? Well I don't know how much exhaust noise you're getting but does the Greddy have a resonator on the B-pipe? If not, the exhaust could cause a lot of hum at cruising speeds.

Also if you really are experiencing a lot of road noise it could just be your tires. Some performance tires (and lots of regular tires too actually...) are pretty noisy. Switching to a quiter model of tire will probably help. Go to www.tirerack.com and look at the poll results and comments about some tires to see which are quieter. The Yokohama AVS dB is supposed to be really quiet (if it comes in your size). I wouldn't bother switching to smaller wheels too unless you're also finding the ride a bit harsh.

 

Ditto on the Resonator. They eliminate the interior cabin resonance (drone) between 2,000 and 3,000RPM's. Wind noise is caused by aerodynamics, or lack thereof. A big contributor is your mirrors. You may be able to find more aerodynamically shaped mirrors, like new Audi's. I don't know if this will help much, but you might try covering the seams of the folding mirrors with something. Wind whips through there very quickly and turbulently at hwy. speeds creating a whistle. You might also try weather stripping under your side hood seams, but that may adversely affect underhood temps. Windshield wiper cowls are also available, they are like shields mounted under your wipers that allow for smoother airflow over the wipers. Hope this helps

"Styrofoam" not "Styrafoam"

 

GReddy and Y = Drone click here

That plus get quieter tires like suggested above...

 

How would I go about removing the resonator from the B-pipe? Where would I go about getting some exhaust wrap? Local parts store?

I also do find the ride a bit to harsh, that is why I will be going with smaller rims. I am also looking to get the new Dunlop Sport A2, they seem to have a great review for road noise.

All the info from KCTYPHOON seems like it's quite a bit of work, has anyone ever done anything similar?

 

Are you sure you are willing to cut up your GReddy? It has two small resonators right after the main catalytic... My link above has details. If you get the 22" Magnaflow and relocate the smaller of the two resonators to the back section... your droning will be reduced... I've done it. It's slightly louder than your Greddy before adding a Y pipe.

 

Get an intake just put mine on SOOOOO nice
who wants quiet the louder the better
you must be old huh

 

sell the greddy and get the apexi world sport w/ silencer....

 

Very interesting link... I'm sure I'd read it before, but recently I've been looking for ways of quieting down straight-through mufflers (hey, some of them look great!). Of course, you wouldn't say with your setup that it's anywhere near stock would you? I guess that's the biggest Magnaflow that would fit under there?

Hmm... maybe if you made the b-pipe OUT OF resonators.. heh heh

 

Not old, just tired of the noise. I have had an intake, y-pipe and greddy exhaust for about a year, those plus riding on Z-rated tires makes for one loud car all the time. We'll see what you'll say once you have had a bunch of noise making mods for a while.

 

Not even close to stock... I was trying to see if I could fit back the other resonator somewhere else but couldn't... The 22" was about as big a resonator as I could fit back there...

Using a chambered main muffler would quiet it down a lot too... like the Apex-i WS one.

 

wear earplugs?