Nissan 370Z Forum - Objective analysis of cabin noise solutions

Nissan 370Z Forum (http://www.the370z.com/)

- Nissan 370Z General Discussions (http://www.the370z.com/nissan-370z-general-discussions/)

- - Objective analysis of cabin noise solutions (http://www.the370z.com/nissan-370z-general-discussions/30487-objective-analysis-cabin-noise-solutions.html)

Ill do this test if someone would like to buy me some dynomat.

on the real tho, even with an exhaust this car is just loud. my brothers 350z with test pipes and exhaust is much more quite inside.. when I take him in my car he always says how loud it is.. I am completely used to it but he isn't.. If I cruise at 50-75 mph even with the 4.08s its relatively silent still, but while accelerating and going speeds over 80, it gets a bit louder than I would like. But I am doing nothing to help it with test pipes, gears, and an exhaust system.

A buddy of mine has a 370z with a greddy exhaust, canister style with tit. tips and his car is OBNOXIOUSLY LOUD with test pipes. He comes in my car and tells me how quite it is..

It is what it is, i don't mind it at all... BUT some do, and all OP did was list how to test it... I thought he was going to have results to follow though. I like his concept he needs to try it out and post his results.. So get to it Mr. OP and report back.

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.

Quote:

Originally Posted by AK370Z (Post 905237)

:iagree:
What badass car isn't noisy and raw?!:stirthepot:

finally some common sense reasoning.............

Quote:

Originally Posted by onzedge (Post 904922)

I have no idea why the Z is getting this bad rap -- seriously. I read what people say on the forum about the noise. I also read reviews that state the same complaint and I still don't get it. I never thought this Z was noisy (or at least noisy in a negative way) until I started reading all this stuff.

Now I am often distracted when I drive because I am trying to figure out if the car is "noisy" or not. Geez, like I need something else to f**king obsess about. Honestly, my obsessions list is long. Everyone who rides with me agree that the car is not very noisy inside. People form my wife to colleagues who happpen to tag along with me all agree that the ride is smooth. These people drive "normal" cars, too.

Sure, under hard acceleration it gets somewhat loud (intake and exhaust help that), but it is the good loud. It is the sweet song sung by a fairly high performing engine that is allowed to breathe correctly. But when cruising it is not at all uncomfortable. I have 13,500 miles so far which include 4 road trips of 800 miles each (driven at 80 – 85 mph).

Is it a fluke? Am I going deaf? Are people expecting too much? I have no clue. I do know though that the Z is, like others have said, a sports car. So go ahead and muck it up with your insulation and decible meters and such. Whatever people do to make them happy in their rides, as long as they are not hurting others, is OK, I guess.

Point well made. Just the other day i had a friend who has driven nothing
but high end luxury cars ride with me and his first comment was "hey this rides and sounds a lot better than i thought it would".

Quote:

Originally Posted by Matthew (Post 904668)

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

:icon18:

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.

Quote:

Originally Posted by Guard Dad (Post 905117)

Whenever the subject of cabin noise comes up the smart remarks are sure to follow. Some folks just can't resist putting people down if they have views that differ from their own.

In my view you don't need a spl meter to do this and, remeber that mobile phone mics are caliberated to work for voice. The op just sounds like a a dorky iphone user. :icon17:

I'm on the "like it loud" side.

IMO - Sports cars should sound aggressive on the inside and out.

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." ...

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.

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.

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.

Quote:

Originally Posted by Xan (Post 904874)

Drive slower...

I joke...
...albeit very poorly.