Objective analysis of cabin noise solutions

AK370Z · 01-21-2011, 02:23 AM

Guys, there's no need to personally attack OP for this thread or question. Everyone has their own opinion. Please be respectful to your forum colleague.

As for noise, I don't have any complain because I like my car noisy/raw. I have an HKS exhaust and love it to death. It's a sports car so I don't mind it. If I wanted quieter, I would've been driving a g37. If anyone ever been in lambo or ferrari, you know how noisy they can be. There are plenty of quiet sport coupes that out there (335i, 135i, TTS etc) but 370Z is a little on the noisy side compare to those.

CrownR426 · 01-21-2011, 03:12 AM

Quote:

Originally Posted by AK370Z

Guys, there's no need to personally attack OP for this thread or question. Everyone has their own opinion. Please be respectful to your forum colleague.

As for noise, I don't have any complain because I like my car noisy/raw. I have an HKS exhaust and love it to death. It's a sports car so I don't mind it. If I wanted quieter, I would've been driving a g37. If anyone ever been in lambo or ferrari, you know how noisy they can be. There are plenty of quiet sport coupes that out there (335i, 135i, TTS etc) but 370Z is a little on the noisy side compare to those.

What badass car isn't noisy and raw?!

chuckd05 · 01-21-2011, 03:28 AM

Gtr

m4a1mustang · 01-21-2011, 07:54 AM

FWIW I used some Second Skin Damplifier and Luxury Liner on the hatch after I installed my FI exhaust. It cut down on a little bit of noise (and by little bit I mean little-to-none... like a "trace" of snow accumulation), but since the car is a hatch you really need to do the entire thing if you want to make a noticable impact on road noise. This means pulling the seats, carpeting, door panels, etc. and covering everything. Not just with a Dynamat-type product but with an actual sound absorpotion product like Luxury Liner.

The problem is you could easily go through 200 lbs of deadening to do the entire car.

I want a Z · 01-21-2011, 08:13 AM

I think road noise is a legit concern for some. I have noticed it on some test drives and not on other later test drives, which makes me think Nissan may have silently improved it.

Insideline.com made a big stink about road noise
2009 Nissan 370Z Long-Term Road Test Introduction

Quote:

... Well, how about road noise? As Executive Editor Michael Jordan noted, "About 90 minutes of driving at a time proved to be as much as I could stand. It's the tire roar. It's bad enough when you're driving on asphalt, but the grooved concrete of freeways in Southern California really makes this car a penalty box on any kind of real trip. And it's not the tires themselves; it's the lack of acoustic refinement from the car. It makes the 2009 Nissan 370Z seem like a cross between a dump truck and a National Guard Humvee. As near as I can remember it, the 350Z was a whisper-quiet limousine in comparison."

And another editor said, "This is a sports car, so why doesn't it sound like one? And it's all well and good that the interior is nicer than a G37's, but why does it have more road noise than an '87 Pathfinder?!" Added Vehicle Testing Manager Mike Schmidt, "I don't remember the tire noise from our Nissan 370Z being so loud the last time I drove it. It's obnoxious. My ears were bleeding before I could crank the radio loud enough to drown out the tire drone."

And then again from that first guy, "And I like the Z-car. Seating position, ride quality, good navigation, satellite radio. And there'd be a good trip across the Coast Range at Coalinga and then a drive in the Santa Cruz mountains on Skyline and then down Page Mill when I get there, which is the whole reason for taking the Z-car in the first place. Then I thought about the sound of those tires filling the cabin on the trip up Interstate 5. Like being 50 feet from a cement truck for five hours. So I decided not to go at all."

Think we're just being whiny? We're not. The tire noise, apparently, comes from less-than-ideal cabin-air extractors, and a fix for the problem is in the pipeline. Future 370Z owners, you're welcome.

But even when that's fixed, there is still the issue of engine noise: "The 3.7-liter V6 makes big power, but it sounds like a Frontier on steroids." And then there was this: "Good grief this car is noisy. I know we keep going on about it, but there's really not much else to dislike about this car — but it's damn near a deal-breaker. The solution? Loud music. Really, really loud music." ...

m4a1mustang · 01-21-2011, 08:17 AM

I drove 1000 miles out to St. Louis in my Z and didn't have an issue with noise. I agree a lot of it is tires. My Hankook Ventus V12s were TREMENDOUSLY quieter than the OEM Potenzas.

shadoquad · 01-21-2011, 09:10 AM

I found the OP's wording to be objectionable. I'm not a big fan of the theory that the car is noisy, but folks are entitled to the opinion. It's when one suggests that it is a consensus that the car is noisy that one is incorrect. It's an opinion shared by some, but apparently not by most.

But I also agree that OP was trying to be helpful in getting a feel for which sound deadening product does the job better. I think that would be helpful for those in the market.

Mt Tam I am · 01-21-2011, 10:42 AM

Quote:

Originally Posted by Matthew

Mine was 106db with the wife inside, and 85 without her.

Quote:

Originally Posted by mengel

If you don't like the road noise, buy an exhaust, an intake and some high flow cats. Wont here the road noise over that...

I bought a Stillen CBE and now I turn down the music just to listen to the sound.

Quote:

Originally Posted by ThoriumHotdog

Wow. I didn't expect these type of responses after reading the OP.

Neither did I.

Quote:

Originally Posted by SeattleLion

There is general agreement that the 370Z is noisy. The sport package versions appear to be the loudest. There also is agreement that reducing the road noise would be a good thing.

Sort of like the agreement that manuals are for drivers and autos are for posers. Starting out like this may have been the catalyst.

Quote:

Originally Posted by shadoquad

I found the OP's wording to be objectionable. I'm not a big fan of the theory that the car is noisy, but folks are entitled to the opinion. It's when one suggests that it is a consensus that the car is noisy that one is incorrect. It's an opinion shared by some, but apparently not by most.

But I also agree that OP was trying to be helpful in getting a feel for which sound deadening product does the job better. I think that would be helpful for those in the market.

He is only asking.

Falcor · 01-21-2011, 10:19 AM

After reading some of the immediate responses I had to re-read the OP, I thought you must have said something about their Mommas'.

i think it is cute that people are trying to defend the 370s honor by making it well known that not "all" owners think it is noisy.

what if someone reads this post and thinks that 370s are noisy!?! I dont want non owners to think its noisy...Give me a break

And in response to the noise, I installed dynomat x-treme in the rear section and over the rear wheels but i dont think it made any real difference. I dont really notice any noise though because when I drive I always have the tunes blowin.

shadoquad · 01-21-2011, 10:27 AM

Quote:

Originally Posted by Falcor

what if someone reads this post and thinks that 370s are noisy!?! I dont want non owners to think its noisy...Give me a break

It's not about that, really. It's just that it's an opinion, not a fact. The Z may or may not be too noisy for you. It's subjective to the driver. I don't care what non-owners think. They need to drive the car on their own and form their opinions. I just don't like having words put in my mouth. It's no general consensus. It's an opinion.

Falcor · 01-21-2011, 10:30 AM

Quote:

Originally Posted by shadoquad

It's not about that, really. It's just that it's an opinion, not a fact. The Z may or may not be too noisy for you. It's subjective to the driver. I don't care what non-owners think. They need to drive the car on their own and form their opinions. I just don't like having words put in my mouth. It's no general consensus. It's an opinion.

my comment weren't directed at you, they were for some of the "harsher" posters

shadoquad · 01-21-2011, 10:31 AM

Quote:

Originally Posted by Falcor

my comment weren't directed at you, they were for some of the "harsher" posters

Ah. Sorry, then. I jumped the gun.

And again, I think the OP is just trying to be helpful for those in the market of sound deadening, which is a significant portion of our user base.

Rui Z · 01-21-2011, 10:24 AM

OP, I think Nissan addressed the noise issue on the 2011 models. Why don't you try to find out what Nissan did to make it less noisy. I think it had something to do with the air box. Let us know.

Falcor · 01-21-2011, 10:33 AM

i think if we can make the ride more comfortable, why not? Personally I wouldnt want to add too much weight to achieve this but if the car is a daily driver some might.

But i think M4A1Mustang is right about the amount of weight that would be needed to significantly reduce noise.

daisuke149 · 01-21-2011, 11:03 AM

Quote:

Originally Posted by Falcor

i think if we can make the ride more comfortable, why not? Personally I wouldnt want to add too much weight to achieve this but if the car is a daily driver some might.

But i think M4A1Mustang is right about the amount of weight that would be needed to significantly reduce noise.

wouldnt need to add a ton of weight, but then costs go up.

A single plexiglass barrier between cabin/trunk area would eliminate alot and then just a lil sound deadening in the doors would probably do wonders.

Issue is, how to make the glass barrier and cost for that. And then where to mount it without drilling etc. Also a removable one would be best IMO. Kinda like T-Tops! but for the inside...

01-21-2011, 02:23 AM	#1 (permalink)
AK370Z Administrator Join Date: Sep 2008 Location: NJ Posts: 9,931 Drives: 09 370Z MB Sports M6 Rep Power: 10	Guys, there's no need to personally attack OP for this thread or question. Everyone has their own opinion. Please be respectful to your forum colleague. As for noise, I don't have any complain because I like my car noisy/raw. I have an HKS exhaust and love it to death. It's a sports car so I don't mind it. If I wanted quieter, I would've been driving a g37. If anyone ever been in lambo or ferrari, you know how noisy they can be. There are plenty of quiet sport coupes that out there (335i, 135i, TTS etc) but 370Z is a little on the noisy side compare to those. __________________ The370Z Signature Pictures ll Want to rock our forum decals on your car? Then click here! ll How to Embed YouTube Videos In a Post STOP! (Hammertime) ll Become a Premium Member Click HERE ll F.A.Q. Are You a Nissan Dealer? Click Here to Become A "Supporting Dealer" and Start Listing Your 370Zs In Our Inventory Section My Monterey Blue Z ll My Exhaust --> My Intake --> G3 Nissan's Official Response Regarding Oil Temp Issue: CLICK HERE Need a Set of Cheap Winter wheels /Tires? Then Visit The Banner Link Below and Place Your Order. You'll Help Keep The370Z Alive.

01-21-2011, 03:28 AM	#3 (permalink)
chuckd05 A True Z Fanatic Join Date: Oct 2009 Location: NY Posts: 2,391 Drives: No longer a Z Rep Power: 21	Gtr __________________ 09 370Z 6M PW - FBO Best 1/4 mile = 12.926 @ 109 SOLD -- 08 BMW 135i - FBO 12.1@120mph SOLD -- white 09 e92 335 Coupe Mtech - 11.9 @ 119 :-)

01-21-2011, 07:54 AM	#4 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6964	FWIW I used some Second Skin Damplifier and Luxury Liner on the hatch after I installed my FI exhaust. It cut down on a little bit of noise (and by little bit I mean little-to-none... like a "trace" of snow accumulation), but since the car is a hatch you really need to do the entire thing if you want to make a noticable impact on road noise. This means pulling the seats, carpeting, door panels, etc. and covering everything. Not just with a Dynamat-type product but with an actual sound absorpotion product like Luxury Liner. The problem is you could easily go through 200 lbs of deadening to do the entire car. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

01-21-2011, 08:17 AM	#6 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6964	I drove 1000 miles out to St. Louis in my Z and didn't have an issue with noise. I agree a lot of it is tires. My Hankook Ventus V12s were TREMENDOUSLY quieter than the OEM Potenzas. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

01-21-2011, 10:19 AM	#9 (permalink)
Falcor Enthusiast Member Join Date: Sep 2010 Location: North Wilkesboro, NC Posts: 347 Drives: 2010 370 CFR edition Rep Power: 16	After reading some of the immediate responses I had to re-read the OP, I thought you must have said something about their Mommas'. i think it is cute that people are trying to defend the 370s honor by making it well known that not "all" owners think it is noisy. what if someone reads this post and thinks that 370s are noisy!?! I dont want non owners to think its noisy...Give me a break And in response to the noise, I installed dynomat x-treme in the rear section and over the rear wheels but i dont think it made any real difference. I dont really notice any noise though because when I drive I always have the tunes blowin. Last edited by Falcor; 01-21-2011 at 10:26 AM.

01-21-2011, 09:10 AM	#7 (permalink)
shadoquad A True Z Fanatic Join Date: Apr 2010 Location: . Posts: 42,608 Drives: . Rep Power: 3888	I found the OP's wording to be objectionable. I'm not a big fan of the theory that the car is noisy, but folks are entitled to the opinion. It's when one suggests that it is a consensus that the car is noisy that one is incorrect. It's an opinion shared by some, but apparently not by most. But I also agree that OP was trying to be helpful in getting a feel for which sound deadening product does the job better. I think that would be helpful for those in the market.

01-21-2011, 10:24 AM	#13 (permalink)
Rui Z Track Member Join Date: Feb 2010 Location: (.)(.) Posts: 931 Drives: 8====D Rep Power: 18	OP, I think Nissan addressed the noise issue on the 2011 models. Why don't you try to find out what Nissan did to make it less noisy. I think it had something to do with the air box. Let us know. __________________

01-21-2011, 10:33 AM	#14 (permalink)
Falcor Enthusiast Member Join Date: Sep 2010 Location: North Wilkesboro, NC Posts: 347 Drives: 2010 370 CFR edition Rep Power: 16	i think if we can make the ride more comfortable, why not? Personally I wouldnt want to add too much weight to achieve this but if the car is a daily driver some might. But i think M4A1Mustang is right about the amount of weight that would be needed to significantly reduce noise.

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