Nissan 370Z Forum - View Single Post

bigdog1250 · 08-20-2012, 07:56 PM

FYI, I installed the 10 sq. ft. sample this past weekend and shot some video. Not sure when I'll have it edited and ready to post but it should be sometime mid week.

Results:

- Installed in the trunk
- Noticeably quieter at idle
- Really easy to install and adhere
- Sample came in just a few days, great customer service!
Used an iPhone app as a basis to measure the decibel levels before and after. At idle before = 56, after = 52

The main reason I wanted to test the deadening material was to reduce the drone created by my F.I. exhaust at about 70mph (2800rpm) on the freeway. When you step on the gas a bit there is a tone that reverberates in the cabin and is kinda annoying. While I don't mind it much, my passengers do.

@70 mph before the install = 77-82 decibels, after = 77-78.

So there was a measurable difference, however it wasn't really noticeable to me, at least not while on the freeway. I'm sure if I installed some more in the roof/hatch area, it would greatly help.

All video and measurements were taken on the same roads and measured multiple times, so it should be fairly accurate.

08-20-2012, 07:56 PM	#68 (permalink)
bigdog1250 Track Member Join Date: Nov 2008 Location: San Francisco Posts: 846 Drives: 991.2 GT3 Rep Power: 18	FYI, I installed the 10 sq. ft. sample this past weekend and shot some video. Not sure when I'll have it edited and ready to post but it should be sometime mid week. Results: - Installed in the trunk - Noticeably quieter at idle - Really easy to install and adhere - Sample came in just a few days, great customer service! Used an iPhone app as a basis to measure the decibel levels before and after. At idle before = 56, after = 52 The main reason I wanted to test the deadening material was to reduce the drone created by my F.I. exhaust at about 70mph (2800rpm) on the freeway. When you step on the gas a bit there is a tone that reverberates in the cabin and is kinda annoying. While I don't mind it much, my passengers do. @70 mph before the install = 77-82 decibels, after = 77-78. So there was a measurable difference, however it wasn't really noticeable to me, at least not while on the freeway. I'm sure if I installed some more in the roof/hatch area, it would greatly help. All video and measurements were taken on the same roads and measured multiple times, so it should be fairly accurate. __________________ 350z / 40th 370z / C6 Z06 / BMW M4 / V10 R8 / C7 Grand Spot / 997.1 GT3 / S2K / Camaro ZL1 / 718 GTS / 991.2 GT3 Last edited by bigdog1250; 08-20-2012 at 07:59 PM.