How do I make this daily driver quiet?
#21
How'd you measure? In the interior? Closed windows? I have full interior, no ST nor parcel shelf carpet, HT with roof liner and it measures around 60-62dbA at idle, up to 70~ dbA cruising 3-4k rpm, up to 80~ on fwy (4k, 80mph), and only ever reaches close to 90dbA with my music on top of it all.
But then again, opening the window doesn't really increase the db level, and the db reader i'm using probably isn't high-tech, it has a few ranges from 40-70, 60-90, 80-110 etc so I still question it's accuracy.
This is with a Tsudo N1 with silencer, Cali-spec cat.
But then again, opening the window doesn't really increase the db level, and the db reader i'm using probably isn't high-tech, it has a few ranges from 40-70, 60-90, 80-110 etc so I still question it's accuracy.
This is with a Tsudo N1 with silencer, Cali-spec cat.
#24
I did the same stuff as 18psi and helped quite a bit. Actual dynamat is very expensive but a lot of people use "Peel and Seal" from the roofing section at Lowes/Home Depot, which is what I used. I think I used around $100 worth of it which pretty well covered the interior and trunk, I still want to do the doors sometime. This is what you're looking for:
#28
Look into doing the wheel wells/backs of the fender liners. Driving to work at 75 last night (around 4000 rpm), I feel as though most of the noise comes from the tires and wind noise around the top and door glass. I don't get many squeaks or rattles until the road gets rough, and most of the squeaking comes from the soft top frame flexing.
If I were to do my car, I would probably apply strips of sound deadener (I like Second Skin's products) in the doors. And for the wheel wells and fender liners, I would probably look into using some sort of acoustic mat. Maybe Second Skin's Luxury Liner.
If I were to do my car, I would probably apply strips of sound deadener (I like Second Skin's products) in the doors. And for the wheel wells and fender liners, I would probably look into using some sort of acoustic mat. Maybe Second Skin's Luxury Liner.
#29
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I remember a thread on M.net quite a while back. The consensus was that the tunnels on either side of the back shelf transmit a lot of noise, and act as ports to accentuate certain frequencies. The poster claimed stuffing them with something (I don't remember what material was used) helped quite dramatically.
#30
I remember a thread on M.net quite a while back. The consensus was that the tunnels on either side of the back shelf transmit a lot of noise, and act as ports to accentuate certain frequencies. The poster claimed stuffing them with something (I don't remember what material was used) helped quite dramatically.
#32
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Trey, please read this thread:
https://www.miataturbo.net/general-miata-chat-9/stripping-miata-hell-48471/
Amazing results.
The entire project added maybe a couple pounds to the car. Maybe less.
But, you have to take your time. It pays off big time.
https://www.miataturbo.net/general-miata-chat-9/stripping-miata-hell-48471/
Amazing results.
The entire project added maybe a couple pounds to the car. Maybe less.
But, you have to take your time. It pays off big time.
#34
Trey, please read this thread:
https://www.miataturbo.net/showthread.php?t=48471
Amazing results.
The entire project added maybe a couple pounds to the car. Maybe less.
But, you have to take your time. It pays off big time.
https://www.miataturbo.net/showthread.php?t=48471
Amazing results.
The entire project added maybe a couple pounds to the car. Maybe less.
But, you have to take your time. It pays off big time.
And Trey I've driven my daily driver (forester) this weekend after doing up the rear section (basically the "trunk") and noticed an improvement already. Though now the noise is coming from *everywhere else*.
So in the miata I am now also going to do the doors. After that I think pretty much every square inch of the interior will be dynomatted.
If that's not enough I have a roll of multi-cell foam I'll also cover the interior with.
And like others said, the stuff isn't heavy at all: 50sq/ft of my stuff weighed just under 13lbs
#35
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Location: Chantilly, VA
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that was a 5x8x18 muffler, not 5x11x22. I acutally dont have any clips of driving around with it IIRC.
FAT MAT on ebay is pretty cheap. I think I got a $40 roll and did my trunk, rear shelf and some of the doors and still have a bunch leftover.