Noise difference between seats down with stripped trunk vs stripped out back seats? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

StraightOuttaCanadaEh · 10-23-2020, 11:47 AM

As in the title, would like to know from people who have done this. I literally never use the back seats and would vastly prefer to have that weight gone. I don't see the point in installed a Shrader seat delete, as that seems a bit pointless reducing some weight and reinstalling some of it back. So I'd rather strip it out. All I have is a catback and lots of mechanical whine and chuntering from my various bushes, inserts, engine mounts and I'm also getting an alu driveshaft put in soon. It's very bearable with a stripped trunk and the back seats down - in fact this is how I prefer to drive to get all the lovely mechanical noise. How much louder would the back seat delete make it? Thanks!

DarkPira7e · 10-23-2020, 11:55 AM

The metal underneath the rear seats ( like the trunk space) is very thin, it will add some extra road noise just as the trunk does. So having them folded down is definitely still filtering noise. I can't really gauge how much, but it's noticeable. If you're already used to having the seats down, I don't think it'd bother you

Sapphireho · 10-23-2020, 12:30 PM

I have the Shrader seat delete. It weighs next to nothing. I pull the bottom part out about once a year (two bolts) to get back there and clean the inside of the back window. It comes with sound mats that go under the delete. When I have it out, the road noise goes WAY up.

StraightOuttaCanadaEh · 10-23-2020, 12:39 PM

Quote:

Originally Posted by Sapphireho

It weighs next to nothing

It's just that in their description it says you save 23 lb or so overall, and it has occurred to me that it's a disappointingly low figure so I presumed that's due to the fact that you're putting something in. So what exactly is next to nothing? Not to mention I'm not really a fan of how it takes up room in the back. I'd rather keep it open so I can pop in my mountain bike whenever I want without having to unclip the whole thing.

Sapphireho · 10-23-2020, 12:53 PM

Quote:

Originally Posted by StraightOuttaCanadaEh

It's just that in their description it says you save 23 lb or so overall, and it has occurred to me that it's a disappointingly low figure so I presumed that's due to the fact that you're putting something in. So what exactly is next to nothing? Not to mention I'm not really a fan of how it takes up room in the back. I'd rather keep it open so I can pop in my mountain bike whenever I want without having to unclip the whole thing.

It is only thin plastic with a thin carpet glued to it. Heaviest part is the sound mats, which you can leave out.

It is just for looks. It is so thin, it cannot support any real weight.

BigTuna · 10-23-2020, 01:00 PM

Why not just take them out and see what it sounds like? Maybe even make a video as a reference for people who have the same question.

StraightOuttaCanadaEh · 10-23-2020, 01:06 PM

Quote:

Originally Posted by BigTuna

Maybe even make a video as a reference for people who have the same question.

too much work lol. I may just take it out... I guess I forgot that I can just put it back in!

TunaNoCrust · 10-23-2020, 01:15 PM

I took the rear seats out and basically all the rear paneling not so much for weight reduction, but so I don't scuff them up when I put my race tires back there.

It is very noticeably louder. Major increase in the exhaust noise (mines TRD exhaust), road noise (4 and 3 degree of camber on <100TW Tires), and anytime you run over gravel it is like fireworks. I also have complete flat bottom and diffuser so that may amplify it. If you are at all questioning how loud it is, I would not do it.

However for me, I don't care as weight savings and space for tires far out weighs my concerns over noise as this is my track car.

StraightOuttaCanadaEh · 10-23-2020, 02:28 PM

Quote:

Originally Posted by TunaNoCrust

I took the rear seats out and basically all the rear paneling not so much for weight reduction, but so I don't scuff them up when I put my race tires back there.

It is very noticeably louder. Major increase in the exhaust noise (mines TRD exhaust), road noise (4 and 3 degree of camber on <100TW Tires), and anytime you run over gravel it is like fireworks. I also have complete flat bottom and diffuser so that may amplify it. If you are at all questioning how loud it is, I would not do it.

However for me, I don't care as weight savings and space for tires far out weighs my concerns over noise as this is my track car.

thank you. I think I'll skip it, it just seems like a lot of trouble for not much weight reduction. Unless the reduction is more universal, I feel like there's no point touching the back seats

new2subaru · 10-23-2020, 11:12 PM

Quote:

Originally Posted by StraightOuttaCanadaEh

too much work lol. I may just take it out... I guess I forgot that I can just put it back in!

I have mine in and out all the time. Most of the summer they were out and I installed them for a road trip up north. It's literally four bolts and the back and bottoms are out or in.

I would try it and see what you think. That said, you'd need to drop a lot more weight to make a significant difference in performance.

TRAKRAVN · 10-25-2020, 05:46 PM

I put the shader rear seat delete in when I put in the harness bar. I figured I didn’t want the car to look pieced together by having inaccessible rear seats.

Cubix · 10-31-2020, 11:39 PM

I took out all the rear seats and panelling for a track day once and it was extremely loud. I would be worried about long term hearing damage if its a daily. For context it was a muffler delete only.
I will say that butt dyno did feel the acceleration difference.

10-23-2020, 11:47 AM	#1
StraightOuttaCanadaEh Wes Join Date: Feb 2017 Drives: Artisan Spirits '17 86 Location: Toronto Posts: 2,794 Thanks: 1,165 Thanked 1,674 Times in 994 Posts Mentioned: 21 Post(s) Tagged: 0 Thread(s)	Noise difference between seats down with stripped trunk vs stripped out back seats? As in the title, would like to know from people who have done this. I literally never use the back seats and would vastly prefer to have that weight gone. I don't see the point in installed a Shrader seat delete, as that seems a bit pointless reducing some weight and reinstalling some of it back. So I'd rather strip it out. All I have is a catback and lots of mechanical whine and chuntering from my various bushes, inserts, engine mounts and I'm also getting an alu driveshaft put in soon. It's very bearable with a stripped trunk and the back seats down - in fact this is how I prefer to drive to get all the lovely mechanical noise. How much louder would the back seat delete make it? Thanks! __________________ Instagram: @gt86ws

10-23-2020, 01:00 PM	#6
BigTuna Senior Member Join Date: Jun 2015 Drives: 2013 WRB BRZ Location: Ohio Posts: 672 Thanks: 258 Thanked 477 Times in 275 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Why not just take them out and see what it sounds like? Maybe even make a video as a reference for people who have the same question. __________________ 2013 WRB "Build" Thread

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Would the trunk/back seats fit 4 x 20" wheels?	TOtS	BRZ First-Gen (2012+) -- General Topics	5	06-10-2019 11:26 AM
Stripped Studs	ckmninja	Wheels \| Tires \| Spacers \| Hub -- Sponsored by The Tire Rack	9	02-14-2019 01:22 PM
Trunk stuck... again. Back seats an option?	jarviz	Issues \| Warranty \| Recalls / TSB	0	04-07-2017 01:38 PM
Have you stripped some weight off your FRS?	gt8613	Scion FR-S / Toyota 86 GT86 General Forum	39	08-20-2013 02:11 PM
weird plastic squeaking noise (back seats)	whyreeto	AUSTRALIA	5	09-17-2012 01:34 AM

10-23-2020, 11:55 AM	#2
DarkPira7e Rust bucket enthusiast Join Date: Feb 2017 Drives: 2013 Turbo Firestorm FRS Location: Vermont Posts: 3,932 Thanks: 3,199 Thanked 4,095 Times in 2,045 Posts Mentioned: 31 Post(s) Tagged: 0 Thread(s)	The metal underneath the rear seats ( like the trunk space) is very thin, it will add some extra road noise just as the trunk does. So having them folded down is definitely still filtering noise. I can't really gauge how much, but it's noticeable. If you're already used to having the seats down, I don't think it'd bother you

10-23-2020, 12:30 PM	#3
Sapphireho ¯\_(ツ)_/¯ Join Date: Mar 2016 Drives: '15 ultramarine Location: Idaho Posts: 13,192 Thanks: 5,451 Thanked 18,240 Times in 8,609 Posts Mentioned: 155 Post(s) Tagged: 0 Thread(s)	I have the Shrader seat delete. It weighs next to nothing. I pull the bottom part out about once a year (two bolts) to get back there and clean the inside of the back window. It comes with sound mats that go under the delete. When I have it out, the road noise goes WAY up.

10-23-2020, 01:15 PM	#8
TunaNoCrust Senior Member Join Date: Apr 2019 Drives: 86, 981S, RX8, 2500HD, GenesisV8 Location: Palmer Motorsports Posts: 119 Thanks: 82 Thanked 70 Times in 43 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	I took the rear seats out and basically all the rear paneling not so much for weight reduction, but so I don't scuff them up when I put my race tires back there. It is very noticeably louder. Major increase in the exhaust noise (mines TRD exhaust), road noise (4 and 3 degree of camber on <100TW Tires), and anytime you run over gravel it is like fireworks. I also have complete flat bottom and diffuser so that may amplify it. If you are at all questioning how loud it is, I would not do it. However for me, I don't care as weight savings and space for tires far out weighs my concerns over noise as this is my track car.

10-25-2020, 05:46 PM	#11
TRAKRAVN Senior Member Join Date: May 2015 Drives: 2015 Scion FRS - Raven Location: Brampton Posts: 141 Thanks: 107 Thanked 76 Times in 48 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I put the shader rear seat delete in when I put in the harness bar. I figured I didn’t want the car to look pieced together by having inaccessible rear seats.

10-31-2020, 11:39 PM	#12
Cubix Senior Member Join Date: Jun 2015 Drives: 2015 FR-S Location: Canada Posts: 104 Thanks: 20 Thanked 33 Times in 26 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I took out all the rear seats and panelling for a track day once and it was extremely loud. I would be worried about long term hearing damage if its a daily. For context it was a muffler delete only. I will say that butt dyno did feel the acceleration difference.

User Name		Remember Me?
Password