Sound Proofing
 

I installed a Pioneer head unit in my Nismo with the blue tooth option but I have a challenge using my cell phone. The interior noise in the car is so loud that people that talk to me cannot hear my conversation. I already tried adjusting the "echo" canceling option on the head unit but that didn't work. I've also tried repositioning the mic with very little to no improvement. Anyone out there had any luck resolving it? Has anyone installed sound proofing insulation and does it really work? How difficult is the installation? Help me out guys! :driving:

Moved to right section

I have the stock Bose system and have the same issue with people not being able to hear me, unless the roads are really smooth. I have seen a few threads on here about installing soon deadening material. Audiofanatic will probably chime in on that, just wanted to let you know that it happens to the stock system too. If that does any good. :p

Does your HU have any kind of noise canceling in the settings. Or microphone boost? My Kenwood has quite a few different ones like that. I don't have a clue what it sounds like on the other end, but I've never had anybody screaming "WHAT?" at me.

And yes, the sound-proofing does help a lot. I did my entire rear deck and front doors. It's quite a bit quieter.

Where did you locate your mic OP?

I have the stock bluetooth unit in my 2011. I use it not only for cell phone communication, but also for interaction with my iPhone's "intelligent assistant" (Siri) and I rarely have any kind of issue with clarity of communication.

If I were having such trouble, the first thing I'd do would be to pull all the stuff out of the hatch floor and line it and the outside of the wheel wells with some 1/2 inch foam.

I opened up my side panels to put rear speakers in the Nismo this weekend, there is really nothing there to absorb the road noise coming off the tires. I'm thinking of adding something in there to absorb some of the noise. Looks to be an easy job. BTW, you can add the rear speakers without taking off all of the hatch panels. tight fit to work in, but doable, and you will cut your hands and wrist up if you don't use a long sleeve shirt.

Dynamat your trunk and wheel wells-- there is very little soundproofing in here to start off with, and most of the noise you hear comes from here

Throw some in the doors if you have leftovers/feel the need to, should help a bit.

You must have better roads in the midwest, because I have the same setup, and use it for the same situations. But Siri and anyone I am talking to always complain about road noise. Unless, I am going under 45mph or am on a very smooth road. :shakes head: Going to look into Dynomatting this thing soon.

It's rural Minnesota. Roads around here take a freeze-thaw-freeze-thaw beating and MNDOT over the last few years has taken to aggregate overlays as they resurface, which does increase the road noise. For me, the bluetooth/cell phone hasn't been any more of a problem in my Z than in my wife's Murano.

Huh......Maybe you just speak louder than I do. :roflpuke2:

Dunno. I was pleased by the sound quality on cell phone calls, but when I got the 4S I was especially pleased that Siri is able to coherently transcribe text and email message as well as respond appropriately to commands.

My guess is that insulating the rear deck and outside of the wheel wells will make a big difference. Another thing to do might be spraying some rubberized undercoating inside the rear wheel wells under the liner.

this was the one thing I saw make a huge difference for some people. If there is a lot of loose "crap" on the roads you drive, a rubberized coating on the wheel liner is huge, plus it helps with the annoying low speed rock plinking.



FWIW, I never needed any coating on my car, and 95% of the time I was able to make calls without complaint from the listening party.

Thanks guys
 

Thank you for all the postings fellas, I got a lot of good feedback here and some excellent suggestions. Looks like I'll have to resort to using sound insulating material in the rear wheel wells, doors and the cargo area. While I got ya here...I'm have a full set of tires installed this weekend. I'm switching to the Continental Extreme Contacts DW and hoping that might also quite things down to a dull roar. :icon17:
I remember the tire roar that my 2004 350z had when I got to the end of the tread...it was deafening. I'm hope that the skins will help remedy most of the noise but I'll definitely be installing the insulation material regardless.

Thanks again:bowrofl:
Steve

:iagree: Thats what I would do too, Good answer Red!:tup:

I for one don't mind the noise so much, reminds me that I bought a sports car not a family sedan. =)

You bring up a good point too.:tup:

You made a good point Imperial...
 

That's what I tell everyone who complains about the beautiful imperfections of the Nismo... it's a sports car. I would have bought an Infinity instead if I thought the noise was going to be a problem but I knew the noise issue could be remedied with a fix. And isn'ton that why we buy narrow-focused sports cars so we can modify them...just like I did to to my 1969 Opel GT. I look at those times and compare them to now and feel like the Nismo a luxury car! (and the Nismo is a luxury for me). Guess the Nismo had spoiled me a little bit! :driving:

Incidently, I located the mic on the ceiling light dome panel...it can't get any closer.

Happy motoring guys
Steve

I know one thing for sure, buying the 370z is the most I've ever spent on a car... haha

Thanks Again
 

I had the Continentals Extreme Contacts installed and they made a HUGE difference with the noise issue. I got 21500 from the Yokohamas and the rear tread was almost gone. I'm still going to pursue the sound deadening material for the rear fenders & the tire well and the doors. Thanks for all the help fellas....great thread!

Steve
There are 26 letters in the alphabet but only ONE Z!

:tup::tup:

and one A, B, C..... silly

if the nismo wasnt my DD, and i didnt care about how my music sounds i would have left the sound deadening issue alone..... buuuut after the second day of owning the car i was already buying some. the car is loud inside! add in rear tires that are a foot wide and its unbearable for daily commuting.

Anyone line there roof? friend said alot of noise comes thru it to?? I lined my
trunk and doors, but I have not put the interior back in yet to test out, still
working on the install.

Man, I dont have the time to take off all the panels and apply sound proof material, its just sooo tedious.. lol, if it gets that bad, I'll pay someone to do it for me.

I didn't think our cars were that loud to be needing sound proofing. Lining the roof is pretty ridiculous

Tires
 

I'm here to tell you first hand that the Continental tires I had mounted have solved the sound issue. My Blue tooth works fine now and I don't have to keep the volume of the stereo cranked up so much......It's a miracle! It's as quite as my Lexus RX350 and the ride is not as "harsh". These are the same tires that the fellas used on their 370z Nismo performance project car in the recent issue of or Nissan Sport.

See ya:tup:
Steve

I'd agree with you.

Im looking for tires too, can you post up the model of those continental tires?:tup:

Tire Info
 

Jay:

I bought them thru Tire Rack on line. the shipping was $70 (Atlanta to Gulf Shores, AL). They were UPS ground but arrived the next day! I took them down to Big 10 Tires and they mounted & Balanced for <$70. Here is the link from Tire Rack:

Continental ExtremeContact DW

The whole process was painless, I swear the difference between the Yoko and the Conti's is light years apart!
Steve

Ahh Nice, eRep given, thank you!:tup: