SparksCW Posted April 20, 2011 Posted April 20, 2011 Just a random thought (I have a lot of these ) but to reduce road noise in the car people always suggest extra mats in the boot, and after fitting my reverse camera last week there's pretty much NO insulation in there.. has anyone used some decent carpet underlay cut to the shape of the boot mat then put it under the mat? does it actually make any difference? I have some expensive 11mm underlay left over from my bedroom carpet but was wondering if it was worth the effort?! Quote
cmck13 Posted April 20, 2011 Posted April 20, 2011 The answer is obvious try your underlay and let us know how it got on? Quote
SparksCW Posted April 20, 2011 Author Posted April 20, 2011 The answer is obvious try your underlay and let us know how it got on? Mmmmmmmm very true I guess. I'll do it when I get back from Cornwall next week and post up if it makes any worthwhile difference. Quote
elfman Posted April 20, 2011 Posted April 20, 2011 pretty heavy underlay for what it is, that'll effect performance hahaha Quote
Danny 350Z Posted April 20, 2011 Posted April 20, 2011 How long have you been waiting to use that Title? Quote
SparksCW Posted April 20, 2011 Author Posted April 20, 2011 http://www.dynamat.com/ Damn that's expensive! Guess I'll try the underlay first then, ouch. Quote
SparksCW Posted April 20, 2011 Author Posted April 20, 2011 How long have you been waiting to use that Title? About 30 seconds before I typed and posted the thread Quote
Lexx Posted April 20, 2011 Posted April 20, 2011 Its expensive, but worth every penny. You can get it cheaper on fleabay too. Ask any of the ICE guru's on the forum, and they will tell you how great it is. in my old RX8 I put some in the doors/boot/and behind just about every other panel. Amazing the difference it makes. Quote
andlid Posted April 20, 2011 Posted April 20, 2011 I'm waiting for husky to get a gb together with a 350z kit... not sure if he forogt that one. Quote
RisingPower Posted April 20, 2011 Posted April 20, 2011 Dynamat really doesn't make much difference with road noise. The equivalent from second skin does seem to help a little with exhaust drone though. Quote
Darren-B Posted April 20, 2011 Posted April 20, 2011 I can see to problems with doing this, Adding Weight to an already heavy car & no-one would ever hear your alarm if it was to go off Quote
Darren-B Posted April 20, 2011 Posted April 20, 2011 Tyres can make a big difference in road noise to. Generally directional tyres create more noise Quote
Dblock Posted April 20, 2011 Posted April 20, 2011 Dynamat really doesn't make much difference with road noise. The equivalent from second skin does seem to help a little with exhaust drone though. +1 You need either some hardcore 4mm+ deadening or a barrier. Dynamat is pretty rubbish tbh and overpriced. Quote
Husky Posted April 21, 2011 Posted April 21, 2011 I'm waiting for husky to get a gb together with a 350z kit... not sure if he forogt that one. nope, definitely not forgotten, just waiting to move house before pulling the car to hits, fingers crossed its done next week Quote
RisingPower Posted April 21, 2011 Posted April 21, 2011 Dynamat really doesn't make much difference with road noise. The equivalent from second skin does seem to help a little with exhaust drone though. +1 You need either some hardcore 4mm+ deadening or a barrier. Dynamat is pretty rubbish tbh and overpriced. I wanted to go with luxury liner pro but it wouldn't fit under the spare Quote
Rubber Posted April 21, 2011 Posted April 21, 2011 I went to a local carpet store to try and get an off cut of carpet underlay. Unfortunately they didn't have any underlay but I got some carpet instead. I used the original boot mat as a template and cut out a new thicker boot mat from the carpet. The result - well, I now have the carpet boot mat covered by the thin 350z boot mat. Didn't find any discernable difference in noise but my RSR exhaust is loud and I don't have a tonneau cover Maybe the a thick section of underlay will work better... Chris Quote
Husky Posted April 21, 2011 Posted April 21, 2011 its the wrong kind of sound deadening for that type of noise Quote
slimjim Posted April 21, 2011 Posted April 21, 2011 I heard "Brown Bread" was 80-90% as good as Dynamat... and 40% of the price or something. Might be good....? Quote
RisingPower Posted April 21, 2011 Posted April 21, 2011 its the wrong kind of sound deadening for that type of noise Iunno, I thought carpet overlay was ok for road noise? Seems to be the best thing is Mass Loaded Vinyl, but jute and/or underlay would presumably have some effect too? Brown bread is just lead sheeting IIRC and isn't going to have much effect on road noise, think dave will be able to confirm that. Quote
Husky Posted April 21, 2011 Posted April 21, 2011 the heavy dynamat stuff is to stop flat panels resonating, mass loaded vinyl is to prevent road/engine noise penetrating the cabin, Quote
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