Installing KilMat Sound Deadening In My STI | IS IT WORTH IT?!
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- Опубликовано: 26 окт 2021
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Авто/Мото
I’ve been wondering about doing sound deadening for awhile in my STi. With some recent upgrades there’s definitely more noticeable NVH so now I’m very motivated to get into this. Great video! Thanks for all the detail and insight.
First night I had the STI I did the exact same but with Noico. I had such an awesome experience doing the same with my CTR I felt why not do it on the STI also. Such a smart mod.
One thing that helped me a bunch is doing under the rear seat, I put the mat on everything under there.
Where did you install on CTR?
Not gonna lie, after watching your videos, you’ve given me tons of ideas of what to do to your car if you think you have done everything 🔥💪🏾
I am running a similar exhaust setup, Delta Motorworks Downpipe and muffler deletes and Nameless Midpipe. I ran Dynamat in trunk, doors, under rear seats, and headliner area. That does quiet down the road noise, but not a loud exhaust. I added MLV under the trunk mat, between the trunk and rear seats, and I'll probably run it under the rear tray area. It did a little, but won't kill the exhaust noise. The Dynamat and MLV probably added about 50lbs. Muffler delete I think drops about 15-20... Headliner Dynamat made a big difference in road noise and rain. The roof is THIN, be careful.
I did this exact thing to my 19 STI a few years back. I also got egg carton sound proofing foam and velcroed that to the rear seats (in the trunk) that helped too.
Wow!
That is one sweet whip you got there.
Enjoy!!
I've used the same kilmat on my bugeye.. did the doors thoroughly lol they're heavy now but no rattles! Stereo sounds great! I say the kilmat is really good quality. Esp for the price. Bang for the buck for sure.
They have 2 thicknesses available too
I did same thing! I did full trunk up to the seats under that black plastic piece. Under back seats/ on top where brake light is and underside. All doors deadened with all new speakers and sub. Sounds amazing now paired with Idoing unit🤘🏼..took me 2 days🥲..man was I sore 😅
Ha, exact same! I need to do my trunk. I just replaced all my speakers with jbl’s and a sub under passenger seat. I sound deadened the doors and and the whole floor with 1.5 boxes of kilmat this weekend. Idoing headunit as well! Legs and lower back man…
My back is sore after the trunk 😂
@@juliomiranda6801 I feel your pain man🥲 took me about a week to recover🤣
I didi the same thing as you did + all doors. I also ripped off the stock sound damper that is at the spare tire indentation and replaced it with a better one. It had already almost came off so did not require any tools.
I'm running two 15's in my trunk and Kilmat did a great job on rattles for me 👍
Cool video! My driver side door and window rattles so much and it is starting to drive me crazy!
Looks solid!
Thank you for solidifying that I will never ever take the time to do this 🤣
I did my rear seat area with 5 pieces and along with cutting and pressing, took me 4 hours. I need a days break to do the trunk.
Thank u i just ordered for my e36 doors and trunk since i have racecar metal doorcards and a sub
You inspired me to do mine with confidence
Man, I have to say you're going to get a workout whenever you do this! Make sure to put a piece inside around the gas cap area too.
I agree on your 13 wrx statement as i own the exact saem thing 13 wrx hatch
I'm doing our shit box 2004 Kia Rio that our son threw away. It's got a good stereo but tin cans are noisy. It's a basic build with manual seat adjustment which makes it easy to pull everything out. Although the windows and mirrors are electric but that's a single cable. Really looking forwards to it. I've had a couple of BMW's ACS 540i and an S500L Mercedes. I know how quiet a car can be.
I also did this to my 2021 STI and it is a huge difference with road noise and exhaust drone 👍
Thanks for the video! I'm considering the same. I have a grimmspeed catted downpipe and perrin resonated exhaust and I have a ton of drone at 70-80mph in 6th gear. With all of your exhaust setups, would you say that the ELH changes the drone RPM's? I might start there, then sound deadening, then a new catback so I don't spend money on parts I've already upgraded. Thoughts??
El changes a lot of things overall. It all depends on everything else. Sound deadening won’t reduce drone overall.
I love that color blue
WOW, thanks, I was thinking to do that. I have 12 Hatchback and exhaust is rumbling, I feel like I need to also insulate my back door, I think sound resonates with in the door, thoughts?
Souind resonates anywhere it can go. If there are holes and places for sound to travel, it will go there. I would recommend doing the whole rear end on the hatch due to it being in the cabin of the car. It won't necessarily cut down on the exhaust sounds, but it'll definitely tone down the road noise and overall in cabin noise.
@@Scoobyfreak86 Awesome, thank you much, I will do that, I have been thinking about it for some time and now your video. SUBSCRIBED for more subi content, I just finished my 500WHP hatch build, check it out. Thank you for your video!
Use a heat gun, warm it up a little bit as you roll or press it on. Helps make it easier, goes down better. Conforms to the curves, gets in places.
What about the trunk lid? And a peice behind the license plate . If the sub really hits, needed usually
use 4 screws on the license plate. that will stop it rattling. inside the trunk lid makes a huge difference.
Just ordered some
What's that beat at the end?
I personally am working on Sound Skins for my 2021 Subaru STI. so this is kind of ironic to say the least!
Just did this using Noico and man! The rear seems very quiet now during normal driving. It’s kinda weird because I’m use to hearing everything moving around. I also added it under that plastic trim behind the rear seats. 👍🏻 I plan to add it to the front now maybe under the seats and foot well.
Got link to the one you got? Noice got a few options, 80mil?
@@DH5354 80mill 18sqft. I got it in amazon.
So do you install the original carpet back over top of it?
Yes
Wonder if this will help with the random rattle from driver’s door people tell me is from the striker bar 🤔 and lol installs seldom go as smoothly as replacing a shift knob. Looking forward to update on your take how effective this is.
I saw a video where someone hit the drivers door latch with a rubber mallet and the rattle went away
On John Nguyen’s RUclips channel
@@GSekong yeah I need a permanent fix though this shit is annoying
Hello bro can we do sound deadener (Damping) in winter i am little bit confused, summer or winter.???
Doesn’t matter what season
@@Scoobyfreak86 thnx bro.
Did it help with the drone? I’m at work and couldn’t watch the video, just commenting atm. Was looking at trying this in my ST.
No it doesn't. I did the same thing to my trunk last year. The best thing to eliminate drone is to rock an exhaust that has mufflers. Once I swapped to the Invidia Q300, my STI has been way more enjoyable on the freeway.
No drone was resolved, as expected. It may have cut some of the noise down a bit, but nothing you’ll notice a drastic change on. You’ll notice less road noise and rattles moreso than exhaust noises.
can this deadener paste on engine hood?
I wouldn’t as I don’t believe this is heat retardant.
I did mines Sat and let me tell you it's not easy on the back lol😅 but worth it when done all around the car..😂
100% coverage puts you way past the point of diminishing returns. People who think they need full coverage of butyl don't understand the how or why.
Saw a lot of experts doing 100%. To me it wasn't logical. Covering 100% of a soda can with it seems to make no difference vs half coverage. I did about 60% to 75% on most of my surfaces.
Hey have I noticed your trunk on the two sides is misaligned. My 2020 Sti the trunk on my side has a good figment and the other side has such a big panel gap
You can adjust on the hinges if yours is off. But my gap is even on both sides. I know in 2015, there was some issues with the corners of the trunk chipping since it was hitting the fender when opened. It has been resolved by Subaru since.
What did you use to get the matt to stick
It’s self adhering. Peel the backing and stick.
@@Scoobyfreak86 I swear some people don’t even watch the video lmao
Put some on the inner doors. It makes a big difference.
I’m sure I’ll get there at some point. I’ve already added more since this video haha.
I do the same thing a year ago
how much does it all weigh?
I didn’t weigh what I put in, but I probably put about 5lbs in.
I got a box of 36 sq ft, Siless I think is the brand. 80 mil, 2 mm. One box weighed 20 lbs I believe. For my car, I needed around two boxes, smaller sedan, Saab 9-5 Aero. I'd say the added weight is negligible compared to the reduced noise. Up to each of us whether we want to trade a bit of performance for some luxury.
Why do the easy mods always end up the worst, most bullshit filled experience 😂
Too bad you didn't give us a sound system demo before and after with the sub at full tilt. That would've REALLY engaged people to buy this.
There’s no way to do this properly through a video.
Sound comparisons are hard to do, unless you have the right recording equipment for the job. But might have been worth showing comparisons on decible readings with and without the kilmat.
@@nerdysc I was more worried about the rattling and actual DEADENING. it ain't gonna magically make it any louder.
@@SNIPEYOPIPE oh for sure, that was my bad I was just agreeing with you because its pretty complex doing a proper video in regards to the sub. But I did forget to mention that my decible comment was more towards your exhaust setup, so that was my bad.
You're one of the few others that didn't cover 100% of everything. I feel as though only about 60% to 80% coverage is what does 99% of the deadening. But that's just my idea, zero proof of this. I did notice one of the more major differences for me, was pillars and the door frame around windows.
The sound deadening and titanium parts cancel each other out weight wise lol
I like the way you think.
So you want a loud exhaust but don’t want to hear it in the cabin, kind of funny 🤣. So it seems the Touring Edition is spot on for your build philosophy. As for drone, articles say it is a pressure wave occurring when the sound frequencies of the engine and exhaust are the same, and they resonate with each other, “in harmony”. So mat in the trunk didn’t do much not that surprising actually. As for the stereo system the matting is supposedly perfect for reducing tinny secondary vibration. Doors seem the next logical next step modification.
Interesting Kilmat says it’s product weighs 0.5 lbs/sq ft and a box covers 36 sq ft so 18 lbs for a box, yet you seem to think it weighs double that? Dynamat weighs the same as well but is three time the price of Kilmat! So as you said not as much of a dollar investment no doubt about that.
AIso was interesting 🧐 to see 👀 the level of effort involved to install Kilmat thanks 🙏 for that. Not a mod for me and my Subie, as I’m into shedding weight not adding any frankly.
ive done this in all my cars. I did the doors on the STI but jesus christ himself couldnt quiet it down enough to my standards. 26 year old body with a 60 year old mindset...