LA Kings

So ive been looking around for some sound deadening material to use in the rear hatch area and under my back seat to help eliminate the exhaust drone noise problem i have. I looked up Dynamat and Raammat because they were the only companies i was familiar with and the prices were just out-f***ing-rageous. recently a new company has popped up out of Texas called GT Sound Control and i saw that they were offering free 10sq ft. samples to anyone who was interested in their product (they are still doing it just call 1-855-GT-SOUND) so I called them up and had them send me some of their material.

















Compared to before it is a night and day difference. My exhaust noise was cut down by 60-70%. I am 100% satisfied with their product and if you are in the market these are the people to call. +1 for a legit company with a legit product

LovetoSlide

How's the weight of these compared to dynomat or those other products?

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LA Kings

GT Mat:
10 sq ft of 80mil product weighs 3.14 lbs.
10 sq ft of 50mil product weighs 2.80 lbs.


Dynamat:
10 sq ft is roughly 4.2lbs

zooopreme

EDIT: Nvm, found their site. Going to give them a try!

PS. with your set up, how do you expect to get to your fuel pump?

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For Sale #1 | For Sale #2

LA Kings

Razor blade. Fuel pump is new so I don't see me needing to access it any time soon

MAHALOHAWAII

just called them and about to ship me a sample to hawaii! LEGIT!

240Lover770

let me know how long it takes you to get it

Turtle

how much ft^2 did you use to cover that much?

LA Kings

i used 20sq ft

240SilviaX

LA Kings,, So no purchase necessary? how much did you use in your car? 10sq ft or more.?

LA Kings

no purchase necessary for the free 10sq ft sample. i used 20sq ft

hOngsterr

their material looks slightly thinner compared to dynamat, im running dynamat in my car atm.

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- Hong

Okinawandrifter87

I wonder how this compares to second skin?

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Driftphreak87

Boost_Fiend

I recently did my car from the firewall back with second skin and its awesome. I don't have any experience with other products but my results with second skin are great and my exhaust is LOUD!

240SilviaX

Just ordered 20sq/ft today, great customer service, super easy to make an order.

jamg

going to look into this.. in for a quiet car!

edit: just ordered. 23.74 for 20sqft.

OP what exhaust are you running? I was thinking about running with an STi muffler, but if the sound deadening works that well, I won't need too.

exactly how much of a difference does it make?

LA Kings

im running a Greddy manifold > SR20 downpipe> Apexi dual N1. difference is night and day. the apexi exhaust has a really really deep throaty tone that loved to vibrate everything. now that i installed the deadener i noticed a 50% decrease in vibration and a 60-70% decrease in overall noise

jamg

do you think there's a need for me to get an STi muffler then?

have you seen the inside? it really makes a 3" exhaust quiet.



I'm not exactly sure what's going to happen to all that when i shoot flames haha

LA Kings

not even gonna lie, i know nothing about the internals of mufflers and how they work. i mean your cheapest route would be to try the deadener anyways so id start with that. if you dont like it at least its only like $20-$30

240SilviaX

This stuff is awesome, ordered another 25sq/ft of it, and prob ordering some more. I want nothing rattling cuz of the sound system I have.. even stuck some on the plastic interior panels. They ship really fast. Highly recommended ppl

Kingtal0n

Let me see if I understand:

1. The car is perfectly quiet to begin with but you decide to make it noisy by adding a noisy exhaust.

2. the noisy exhaust annoys you so you add weight to your vehicle to stop the sound.


I have a problem adding weight to my daily. Why not just remove the noisy exhaust instead?

its crazy. I can see the next step:

3. the car is too quiet again so I install an even noisier exhaust
4. the car is too noisy again so lets add more sound absorbing material!

Heres a better idea;
Install an electric cutout on the OEM exhaust. Noisy when you want, not when you dont. /thread

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5.3/4l80e/turbo 240sx playthrough:
https://tinyurl.com/turbo240

jamg

Exhaust systems benefit turbo motors.

The addition of 10-15lbs is not going make a significant difference.

How about you lose 20lbs of fat is you are so worried?

LovetoSlide

I don't understand people with their junk ass 240's on this forum thinking that adding 20 pounds is going to significantly slow down their "rockets".

You shave weight by adding better aero, lighter rims, lighter/better engine parts. But for people who actually want to restore their 240 to feel more modern; they add luxuries like sound deadening. I don't know about you but even my "meticulously owned", stock ass 240 creeks every now and then. It's a fucking 20 year old car!!!

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Kingtal0n

The S15 silvia sr20det is capable of putting down 280rwhp through the oem exhaust system.

Now tell me, guys, where is your 300+rwhp that requires an aftermarket exhaust? Does anybody in this thread actually own a turbo engine producing over 300 horsepower that necessitates the noisy exhaust system?

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5.3/4l80e/turbo 240sx playthrough:
https://tinyurl.com/turbo240

LovetoSlide

Lmao I have a 300 HP capable motor; though I run a moderate, daily boost of 6 psi. My cat is gutted, but I'm running a lowkey muffler on my 3 inch straight pipe. It sounds quieter than a KA that's for sure under low RPM's but some people daily their 240's and I'm sure they're trying to make their 240 more luxurious to either themselves or the people they might drive.

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Briou

To answer your second question: Yes I own a turbo engine (sr20det) producing over 300 horsepower that necessitates a noisy exhaust system.

And to answer your first question: My 300+rwhp which performs extremely will with my 3" aftermarket exhaust is in the driveway.

Any other questions?

jamg

A less restrictive exhaust benefits turbo motors... So is this now about loud cars, or saving weight?

Promise Land

I used DEI Boom Mat on the interior of my S14. It cut down on exhaust drone but the Energy Suspension bushings also add interior noise. I will eventually replace the exhaust since the previous owner added a 3" race exhaust which is stupidly noisy.

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240SilviaX

OMG extra 20lbs!!! who cares ,, its their own car , do what u want , there always some one trying to trash ur idea, lame

240SilviaX

My amps, subs, box add 80lbs not worried about the sound deadening weight lol. And who would want a stock exhaust on their modded 240? Not me