Where does the FRS TRD exhaust growl... - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Packofcrows · 12-13-2016, 11:50 AM

I'm new with lots of things, one of 'em is exhausts. So apologies.

I love the FRS growl on the TRD exhaust. Where is it created in the exhaust? Can someone explain it for me? Please?

Just driving today on way to get coffee and like 3 consecutive people commented on it. Got me thinking.

FX86 · 12-13-2016, 12:03 PM

maybe the resonator

Packofcrows · 12-13-2016, 12:09 PM

oh so it would be like in a musical instrument? Like those western guitars?

FX86 · 12-13-2016, 12:29 PM

Quote:

Originally Posted by Packofcrows

oh so it would be like in a musical instrument? Like those western guitars?

music to car enthusiast's ears

Cole · 12-13-2016, 12:45 PM

Combination of the resonator and muffler. Could even come down to things like the angle of bends and the tip shape.

Acoustics are an impossible beast to tame.

Tcoat · 12-13-2016, 12:54 PM

Quote:

Originally Posted by Cole

Combination of the resonator and muffler. Could even come down to things like the angle of bends and the tip shape.

Acoustics are an impossible beast to tame.

This^^ Pipe diameter also comes into play. All these thing contribute to the sound.

Tcoat · 12-13-2016, 12:55 PM

Quote:

Originally Posted by Packofcrows

I'm new with lots of things, one of 'em is exhausts. So apologies.

I love the FRS growl on the TRD exhaust. Where is it created in the exhaust? Can someone explain it for me? Please?

Just driving today on way to get coffee and like 3 consecutive people commented on it. Got me thinking.

Sky?
English is far too good for Pack!

Cole · 12-13-2016, 01:01 PM

Quote:

Originally Posted by Tcoat

This^^ Pipe diameter also comes into play. All these thing contribute to the sound.

Thanks for that. Needed the reassurance that my "common sense thinking" wasn't actually "talking out of my ass".

I've never actually put a good amount of thought into all the factors contributing to sound in an exhaust. This is a good brain exercise.

Tcoat · 12-13-2016, 01:04 PM

Quote:

Originally Posted by Cole

Thanks for that. Needed the reassurance that my "common sense thinking" wasn't actually "talking out of my ass".

I've never actually put a good amount of thought into all the factors contributing to sound in an exhaust. This is a good brain exercise.

But if you change the packing in a TRD exhaust is it still a TRD exhaust?

Cole · 12-13-2016, 01:04 PM

Quote:

Originally Posted by Tcoat

But if you change the packing in a TRD exhaust is it still a TRD exhaust?

What would be the point? More trouble than it's worth. Just buy a Corsa.

/thread

Edit: I saw what you did and didn't take the bait

Packofcrows · 12-13-2016, 03:33 PM

No it's me Pack.

I hear two sounds. The exhaust sound which sounds like any sport exhaust and a growl. The growl we refer to here (on the forums) as a purr.

Is that part of the mix in exhaust metals? Wonder if part of sound is intake.

IceFyre13th · 12-13-2016, 03:41 PM

http://www.caranddriver.com/features...ferent-feature

Jajanken86 · 12-13-2016, 04:28 PM

Quote:

Originally Posted by Packofcrows

I'm new with lots of things, one of 'em is exhausts. So apologies.

I love the FRS growl on the TRD exhaust. Where is it created in the exhaust? Can someone explain it for me? Please?

Just driving today on way to get coffee and like 3 consecutive people commented on it. Got me thinking.

Just the tip

Sent from my SAMSUNG-SM-G935A using Tapatalk

Tcoat · 12-13-2016, 04:30 PM

Quote:

Originally Posted by Packofcrows

No it's me Pack.

I hear two sounds. The exhaust sound which sounds like any sport exhaust and a growl. The growl we refer to here (on the forums) as a purr.

Is that part of the mix in exhaust metals? Wonder if part of sound is intake.

Read Ice's link.
The intake does effect the sound for sure.
The boxer engine also has a very distinct sound to it (like Ice's link explains sort of) and I usually hear one coming well before I see it. Usually turns out to be another boring old WRX but I can still tell.

12-13-2016, 11:50 AM	#1
Packofcrows hey you, yeah you <3 Join Date: Jul 2012 Drives: 2014 37J FR-S Location: Monterey County, CA Posts: 2,715 Thanks: 905 Thanked 1,259 Times in 809 Posts Mentioned: 38 Post(s)	Where does the FRS TRD exhaust growl... I'm new with lots of things, one of 'em is exhausts. So apologies. I love the FRS growl on the TRD exhaust. Where is it created in the exhaust? Can someone explain it for me? Please? Just driving today on way to get coffee and like 3 consecutive people commented on it. Got me thinking. __________________ Got my TRD wheels and TRD louvers. Thanks!!!

12-13-2016, 12:09 PM	#3
Packofcrows hey you, yeah you <3 Join Date: Jul 2012 Drives: 2014 37J FR-S Location: Monterey County, CA Posts: 2,715 Thanks: 905 Thanked 1,259 Times in 809 Posts Mentioned: 38 Post(s)	oh so it would be like in a musical instrument? Like those western guitars? __________________ Got my TRD wheels and TRD louvers. Thanks!!!

12-13-2016, 03:33 PM	#11
Packofcrows hey you, yeah you <3 Join Date: Jul 2012 Drives: 2014 37J FR-S Location: Monterey County, CA Posts: 2,715 Thanks: 905 Thanked 1,259 Times in 809 Posts Mentioned: 38 Post(s)	No it's me Pack. I hear two sounds. The exhaust sound which sounds like any sport exhaust and a growl. The growl we refer to here (on the forums) as a purr. Is that part of the mix in exhaust metals? Wonder if part of sound is intake. __________________ Got my TRD wheels and TRD louvers. Thanks!!!

12-13-2016, 03:41 PM	#12
IceFyre13th Senior Member Join Date: Jun 2013 Drives: Mazdarati Location: Arizona Posts: 1,238 Thanks: 608 Thanked 1,369 Times in 675 Posts Mentioned: 8 Post(s)	http://www.caranddriver.com/features...ferent-feature __________________ It's only impossible if you stop to think about it.

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12-13-2016, 12:03 PM	#2
FX86 Banned Join Date: May 2016 Drives: on the wrongside of the road Location: rear floor mats Posts: 2,240 Thanks: 1,084 Thanked 2,087 Times in 1,015 Posts Mentioned: 14 Post(s)	maybe the resonator

12-13-2016, 12:45 PM	#5
Cole Not a troll Join Date: Apr 2015 Drives: FR-S Location: Canada Posts: 5,104 Thanks: 8,237 Thanked 5,399 Times in 2,694 Posts Mentioned: 266 Post(s)	Combination of the resonator and muffler. Could even come down to things like the angle of bends and the tip shape. Acoustics are an impossible beast to tame.

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