Need help choosing an intake - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

soundman98 · 05-27-2023, 12:37 PM

Quote:

Originally Posted by blsfrs

https://www.google.com/search?q=snor...id:GlEnNFmWpps

I know of those. My version cost me nothing.

glhs386 · 05-28-2023, 01:12 AM

The stock trumpet is a tuned velocity stack.

blsfrs · 05-28-2023, 10:19 AM

Quote:

Originally Posted by glhs386

The stock trumpet is a tuned velocity stack.

Generally speaking, velocity stacks are used directly over a throttle body where straightening out the air flow would be very beneficial.

Our "trumpet" pulls in air which then makes a 90* turn and runs into the filter. Is this design more for efficient air flow or more for noise abatement?

soundman98 · 05-28-2023, 11:36 AM

Given the locations of the resonators, definitely noise abatement

glhs386 · 05-28-2023, 01:52 PM

Quote:

Originally Posted by blsfrs

Generally speaking, velocity stacks are used directly over a throttle body where straightening out the air flow would be very beneficial.

Our "trumpet" pulls in air which then makes a 90* turn and runs into the filter. Is this design more for efficient air flow or more for noise abatement?

On a Formula 1 car the front wing controls airflow over the entire vehicle to the point where it radically alters the performance of the rear wing. It seems to me very likely that the trumpet could affect flow stability into the mass air sensor even after making two ninety degree turns. Without CFD software analysis from Toyota, it's pure speculation on what exactly it accomplishes. But since I don't see any evidence that it acts as a restriction on a stock engine, attacking it with a Dremel in an attempt to "improve" the work of a factory engineering team seems kinda dubious. Might as well drill holes in your airbox while you're at it.

soundman98 · 05-28-2023, 02:17 PM

Please don't indicate I made an improvement. I made a change for my own fun.

Lantanafrs2 · 05-28-2023, 02:30 PM

Wasn't shiv doing something with the snorkel? Shortening it and flaring the mouth of it?

glhs386 · 05-28-2023, 02:53 PM

Quote:

Originally Posted by soundman98

Please don't indicate I made an improvement. I made a change for my own fun.

My comments are mostly intended for people intending to copy this mod under the impression that it does.

blsfrs · 05-28-2023, 04:16 PM

It's raining here. Nuttin to do but pruse the internet.
https://www.ft86club.com/forums/show...t=56341&page=2

soundman98 · 05-28-2023, 05:19 PM

So my Dremel work resulted in 0.25 hp gain...

Teseo · 05-28-2023, 09:19 PM

Quote:

Originally Posted by blsfrs

https://www.google.com/search?q=snor...id:GlEnNFmWpps

Will fit 2013?

Lantanafrs2 · 05-28-2023, 10:05 PM

Man I remember pouring over those early intake threads hoping for the impossible dream lol. After all that bullshit we realize we should've just left it alone.

new2subaru · 05-28-2023, 10:42 PM

Quote:

Originally Posted by soundman98

So my Dremel work resulted in 0.25 hp gain...

Ya but, now you don't have to upgrade to a 22

blsfrs · 05-28-2023, 10:43 PM

Quote:

Originally Posted by Lantanafrs2

Man I remember pouring over those early intake threads hoping for the impossible dream lol. After all that bullshit we realize we should've just left it alone.

I'm surprised @glhs386 hasn't posted "I told you so".

05-28-2023, 01:12 AM	#16
glhs386 Member Join Date: Sep 2018 Drives: 2014 FR-S Monogram Location: Nor Cal Posts: 57 Thanks: 52 Thanked 65 Times in 34 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	The stock trumpet is a tuned velocity stack. Last edited by glhs386; 05-28-2023 at 04:22 AM.

05-28-2023, 11:36 AM	#18
soundman98 ProCrastinationConsultant Join Date: Sep 2013 Drives: '14 Ranger, '18 Tacoma 4Dr LB Location: chicago-ish Posts: 11,330 Thanks: 35,240 Thanked 13,675 Times in 6,782 Posts Mentioned: 98 Post(s) Tagged: 0 Thread(s)	Given the locations of the resonators, definitely noise abatement __________________ "The time you enjoy wasting is not wasted time"

05-28-2023, 02:17 PM	#20
soundman98 ProCrastinationConsultant Join Date: Sep 2013 Drives: '14 Ranger, '18 Tacoma 4Dr LB Location: chicago-ish Posts: 11,330 Thanks: 35,240 Thanked 13,675 Times in 6,782 Posts Mentioned: 98 Post(s) Tagged: 0 Thread(s)	Please don't indicate I made an improvement. I made a change for my own fun. __________________ "The time you enjoy wasting is not wasted time"

05-28-2023, 05:19 PM	#24
soundman98 ProCrastinationConsultant Join Date: Sep 2013 Drives: '14 Ranger, '18 Tacoma 4Dr LB Location: chicago-ish Posts: 11,330 Thanks: 35,240 Thanked 13,675 Times in 6,782 Posts Mentioned: 98 Post(s) Tagged: 0 Thread(s)	So my Dremel work resulted in 0.25 hp gain... __________________ "The time you enjoy wasting is not wasted time"

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05-28-2023, 02:30 PM	#21
Lantanafrs2 Senior Member Join Date: Jan 2018 Drives: 2013 frs red Location: South Florida Posts: 3,576 Thanks: 2,585 Thanked 3,140 Times in 1,689 Posts Mentioned: 6 Post(s) Tagged: 1 Thread(s)	Wasn't shiv doing something with the snorkel? Shortening it and flaring the mouth of it?

05-28-2023, 04:16 PM	#23
blsfrs Senior Member Join Date: Dec 2018 Drives: 2013 frs base Location: central Virginia Posts: 1,444 Thanks: 2,707 Thanked 1,459 Times in 688 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	It's raining here. Nuttin to do but pruse the internet. https://www.ft86club.com/forums/show...t=56341&page=2

05-28-2023, 10:05 PM	#26
Lantanafrs2 Senior Member Join Date: Jan 2018 Drives: 2013 frs red Location: South Florida Posts: 3,576 Thanks: 2,585 Thanked 3,140 Times in 1,689 Posts Mentioned: 6 Post(s) Tagged: 1 Thread(s)	Man I remember pouring over those early intake threads hoping for the impossible dream lol. After all that bullshit we realize we should've just left it alone.

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