Spayed on more undercoating...waste of time!

frost · 04-12-2009, 04:42 PM

^ Different things bother different people, so even though I agree with you, I try not to bust people's chops who find it bothersome (not saying you are, just saying). It actually hasn't bothered me at all, although it was noticeable.

ChrisSlicks · 04-12-2009, 05:09 PM

I think the spray on stuff is mostly to stop the panel from vibrating (deadening), don't think it has huge insulating properties.

I think Dynomat on the interior would work better, it's really heavy and dense and a good sound insulator. It will hurt performance slightly though if you go adding 100 pounds of it.

rackley · 05-20-2009, 05:01 PM

Quote:

Originally Posted by ChrisSlicks

I think the spray on stuff is mostly to stop the panel from vibrating (deadening), don't think it has huge insulating properties.

I think Dynomat on the interior would work better, it's really heavy and dense and a good sound insulator. It will hurt performance slightly though if you go adding 100 pounds of it.

I just did it this weekend. I took everything out of the trunk and covered as much metal as possible (including the wheel humps, front and back) and didn't notice any difference at all.

Most of the sound insulation actually seems to come from just putting the mats in the back.

The next thing I was thinking would probably be easier and better is just more of the 3/4" or so thick insulation/matting that seems to be under the passenger compartment. It may not PREVENT noise, but it may do a good job of absorbing some of it...

joeyz10 · 04-12-2009, 05:16 PM

You're right frost but I just to let some people know because I am sick and tired of reading reviews from Edmunds, yahoo, msn and stc saying that the noise is a little bit loud. But for goodness sake it is a freaking sportscar!!! Dont' compare apples and oranges

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04-12-2009, 04:42 PM	#1 (permalink)
frost Retired admin Join Date: Dec 2008 Location: Winterfell Posts: 106,613 Drives: Your Wife Crazy Rep Power: 0	^ Different things bother different people, so even though I agree with you, I try not to bust people's chops who find it bothersome (not saying you are, just saying). It actually hasn't bothered me at all, although it was noticeable.

04-12-2009, 05:09 PM	#2 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 655	I think the spray on stuff is mostly to stop the panel from vibrating (deadening), don't think it has huge insulating properties. I think Dynomat on the interior would work better, it's really heavy and dense and a good sound insulator. It will hurt performance slightly though if you go adding 100 pounds of it.

04-12-2009, 05:16 PM	#4 (permalink)
joeyz10 Base Member Join Date: Mar 2009 Location: SoCal Posts: 248 Drives: 09 370z AT/ RRSS 08/ Rep Power: 18	You're right frost but I just to let some people know because I am sick and tired of reading reviews from Edmunds, yahoo, msn and stc saying that the noise is a little bit loud. But for goodness sake it is a freaking sportscar!!! Dont' compare apples and oranges