FRS/BRZ intake leak part? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Totalrecall · 08-08-2018, 06:18 PM

What is this part called at the bottom? I've pinpointed intake lean causing a lean code.

The little thing that hangs from the intake pipe. Mine has a huge hole from rubbing on belt. And what is even the point of this cup thing, Its hollow

churchx · 08-08-2018, 06:55 PM

Probably resonator. To cancel out certain noise frequencies. If it's simpler to you, you can close it off, just like soundtube port.

jflogerzi · 08-08-2018, 07:00 PM

You could probably just cap it. Local hardware store should have it. Otherwise just get the Perrin inlet tube and do the sound delete.

Ultramaroon · 08-08-2018, 07:54 PM

I think that one is important for the MAF

FRSBRZGT86FAN · 08-08-2018, 10:53 PM

Quote:

Originally Posted by churchx

Probably resonator. To cancel out certain noise frequencies. If it's simpler to you, you can close it off, just like soundtube port.

Quote:

Originally Posted by Totalrecall

What is this part called at the bottom? I've pinpointed intake lean causing a lean code.

The little thing that hangs from the intake pipe. Mine has a huge hole from rubbing on belt. And what is even the point of this cup thing, Its hollow

That is indeed a resonator, but I believe it was used in some way to help the sound resonator tube that pumps the intake noise into the cabin. You can replace the whole intake tube rather than buying that OEM part as I was unable to find that specific part number looking at diagrams

Also doing so deletes the sound tube:
https://www.rallysportdirect.com/par...ake-hose-black

Or you can have this used OEM tube:
https://www.ebay.com/itm/O-13-16-SCI...item1a3c100bb1

Quote:

Originally Posted by Ultramaroon

I think that one is important for the MAF

I don't believe it's important to MAF, many CAI and other inlet tube manufacturers removed it and found it was simply for sound suppression. Also the TRD intake removes it entirely as well.

Ultramaroon · 08-09-2018, 12:04 AM

Quote:

Originally Posted by FRSBRZGT86FAN

I don't believe it's important to MAF, many CAI and other inlet tube manufacturers removed it and found it was simply for sound suppression. Also the TRD intake removes it entirely as well.

After I posted, I second guessed all the people that were worried about the sound tube delete. :/

*gasp* "What if they were all...?" ... "Nah. No way!"

FRSBRZGT86FAN · 08-09-2018, 12:49 AM

Quote:

Originally Posted by Ultramaroon

After I posted, I second guessed all the people that were worried about the sound tube delete. :/

*gasp* "What if they were all...?" ... "Nah. No way!"

Well all I can say is I have the TRD intake installed which didn't do much but look cool, but I did cap off the sound tube as it came with the cap to remove it.

Boomerang · 08-09-2018, 05:41 AM

Quote:

Originally Posted by Totalrecall

What is this part called at the bottom? I've pinpointed intake lean causing a lean code.

The little thing that hangs from the intake pipe. Mine has a huge hole from rubbing on belt. And what is even the point of this cup thing, Its hollow

It's called the resonator.

FWIW just remove it and plug it.

Link below will show you before vs after HP if you remove;

https://cdn.mishimoto.com/media/prod...ringReport.pdf

Yoshoobaroo · 08-09-2018, 07:56 AM

The resonator is used to tune the intake pulses. Mishimoto did some dyno testing with it, it generates about 3-5 HP depending on which air filter and intake hose used (also linked by @Boomerang above):

https://www.mishimoto.com/engineerin...nt-completion/

Either way the engine lost power without the resonator in every scenario.

guybo · 08-09-2018, 08:51 AM

just get the Perrin silicone intake tube or a whole intake kit and replace that whole assembly.

Ultramaroon · 08-09-2018, 01:19 PM

Quote:

Originally Posted by Boomerang

It's called the resonator.

FWIW just remove it and plug it.

Link below will show you before vs after HP if you remove;

https://cdn.mishimoto.com/media/prod...ringReport.pdf

I'm back to thinking it affects MAF operation. It also supports my years old argument that the sound tube was an afterthought.

Totalrecall · 08-09-2018, 03:04 PM

Thanks all for the info, I will end up just deleting it for now. Currently have the hole taped off with electrical tape. (Very temporary to troubleshoot lean code and confirm cause)

.

Ill purchase whole intake part as suggested from ebay later on.

08-08-2018, 06:18 PM	#1
Totalrecall Member Join Date: Sep 2017 Drives: frs Location: moon Posts: 18 Thanks: 1 Thanked 3 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	FRS/BRZ intake leak part? What is this part called at the bottom? I've pinpointed intake lean causing a lean code. The little thing that hangs from the intake pipe. Mine has a huge hole from rubbing on belt. And what is even the point of this cup thing, Its hollow Last edited by Totalrecall; 08-08-2018 at 06:40 PM.

08-08-2018, 07:54 PM	#4
Ultramaroon not playing cards Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 32,395 Thanks: 53,053 Thanked 37,228 Times in 19,308 Posts Mentioned: 1117 Post(s) Tagged: 9 Thread(s)	I think that one is important for the MAF __________________ service manuals

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08-08-2018, 06:55 PM	#2
churchx Senior Member Join Date: Mar 2015 Drives: 2014 GT86 Location: Latvia, Riga Posts: 4,334 Thanks: 698 Thanked 2,086 Times in 1,436 Posts Mentioned: 53 Post(s) Tagged: 1 Thread(s)	Probably resonator. To cancel out certain noise frequencies. If it's simpler to you, you can close it off, just like soundtube port.

08-09-2018, 08:51 AM	#10
guybo Huge E85 fan! Join Date: May 2016 Drives: 2016 Scion FRS Location: Tampa, FL, USA Posts: 1,850 Thanks: 539 Thanked 1,010 Times in 605 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	just get the Perrin silicone intake tube or a whole intake kit and replace that whole assembly.

08-09-2018, 03:04 PM	#12
Totalrecall Member Join Date: Sep 2017 Drives: frs Location: moon Posts: 18 Thanks: 1 Thanked 3 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Thanks all for the info, I will end up just deleting it for now. Currently have the hole taped off with electrical tape. (Very temporary to troubleshoot lean code and confirm cause) . Ill purchase whole intake part as suggested from ebay later on.

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