:icon18: I love this one...

Actually, it is useful information. I'm sure edmunds used more professional equipment then an iphone app, so we need to compare their numbers to the decibel you get from an iphone app. If it's not close to the edmunds numbers, then that means there is alot of muffling going on with the iphone or whatever other device you are using. If there's too much muffling, you will not get an accurate measurement of noise level difference for before and after sound treatment.

Like I suggested before, you should look into what Nissan did as their road noise fix for the 2011 model.

And I suppose that includes you.

:gtfo2:

:icon18: ouch.

I haven't decided if I'm one for staying here yet... :)

But I surely do miss an option to downrate/block posters.

The iPhone app marketplace has a lot of SPL meters, but most are apparently terrible. I wasn't willing to spend $20 for the best one, but the 0.99 SPL Meter from Studio Six Digital is pretty nice, has a max value, and rotates upside down. The free Volume Tester doesn't rotate but otherwise is nice - you can reset and stop/start measuring, and it has peak hold.

Uncalibrated may make different phones have different readings, but before and after readings over the same drive should be consistent.

Great post -- eloquent, concise and understated

this post just degrades further and further every time i check it...

Bloody hell, it is noisy. Maybe you don't notice so much if you're 20 something....I don't even like driving with the windows down anymore, because it's too noisy, but then again I LOVE quiet (when I can get it) because I have 3 young boys (Larry, Curly, Mo) who are very good at generating tremendous noise for long periods of time, and MY EARS are TIRED. That must mean I am old.

I am looking forward to putting quieter tires on this machine, but if I were that bothered I'd spend $800 on a professional dynamat job. No big deal. I've found that most cars and motorcycles need a bit of custom work to make them what you really want. Whether that's quieter, louder, smoother, or faster.

Well, I'm 50 something and I don't think that the Z is noisy - and it's my DD. If I run over loose gravel, sure all hell breaks loose. And it's a low-to-the ground sports car, so it's going to be louder than a sedan, even during "normal" driving.

It's not a quiet car, but it's not a NOISY car either - know what I mean? That's why I (and, I suppose, most of the others) objected to the OP's blanket statement that there is "general agreement" that the Z is noisy.

Ah, stick around - but expect pushback when you call the other posters "idiots", 'ya know?

And about that "option to downrate/block posters" - be careful what you wish for... :)