OEM intake resonator mod idea - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

stevesnj · 11-04-2015, 11:18 AM

I want to remove the airbox resonator but utilize the resonator hole and connect tubing to it and duct it passenger side for more fresh air intake. Anyone see any cons doing this? It's a small hole but a little more air with a K&N drop in filter should help. Just wondering if this would create turbulence inside the box entry and hinder airflow altogether. Just an idea.

wparsons · 11-04-2015, 11:39 AM

Depending on the velocities and pressures, you could actually end up with air leaving the airbox through that hole instead of sucking more in.

fang_gt86 · 11-04-2015, 11:46 AM

My wildest guess is that it'll create a turbulence within the box. This may ruin the smooth airflow that comes only from the front. A lot of air means nothing if it doesn't flow smoothly.

go_a_way1 · 11-04-2015, 11:51 AM

I think this is a waste of time as you pull cold air in from the front bumper already.

stevesnj · 11-04-2015, 12:04 PM

Quote:

Originally Posted by go_a_way1

I think this is a waste of time as you pull cold air in from the front bumper already.

I am aware

stevesnj · 11-04-2015, 12:06 PM

Will removing the resonator effect anything? is it a sound resonator or airflow resonator?

wparsons · 11-04-2015, 12:24 PM

http://www.ft86club.com/forums/showp...&postcount=295

Tcoat · 11-04-2015, 01:57 PM

Unlike the sound tube this is not something I would second guess the design engineers on.

stevesnj · 11-04-2015, 03:16 PM

So after a few hours of research it seems removing the resonators, any or all 4 is not a good idea. If you have a CAI without a tune it seems there is no effect other than more intake noise. Anyway To keep a stable airflow through the OEM velocity stack (scoop) is designed to keep "air reversion" from happening, the resonators are key to this process.. Also the MAF is looking for a stock airstream at a certain temp, pressure and volume. A CAI with a tune specific for the CAI should be more effective. Keeping a consistent airflow before and after the airbox seems most important. So since i'm not going to be tuning my car for a long while it seems a simple K&N filter will help with a more consistent flow of air, pressure and intake temps without inducing unwanted turbulence. At least this is what I think this all means..lol

Sources;

What do air intake resonators do?

Has anyone deleted the resonator in the stock airbox?

Teseo · 11-04-2015, 04:19 PM

So the case is over?

stevesnj · 11-04-2015, 04:40 PM

Quote:

Originally Posted by Teseo

So the case is over?

YES finally..lol at least for me.

Leonardo · 11-04-2015, 04:45 PM

Nice. Wondered this myself. It's ugly, but does its job. Good to know.

stevesnj · 11-04-2015, 04:52 PM

Anyone know if the TRD intake does or does not use the resonators? By the pics I see the TRD eliminates all but the velocity stack resonators. Maybe why it is so big compared to stock. Seems expensive but engineered perfect to the engine.

churchx · 11-04-2015, 08:44 PM

It's big by simple principle. Bigger area of filter = less pressure needed/less restriction to air flow divided over that area. But imho gains are a bit insufficient for cost.

11-04-2015, 11:18 AM	#1
stevesnj Senior Member Join Date: May 2013 Drives: 2016 FR-S Oceanic Blue Location: Southern NJ Posts: 2,958 Thanks: 2,158 Thanked 1,601 Times in 923 Posts Mentioned: 30 Post(s) Tagged: 2 Thread(s)	OEM intake resonator mod idea I want to remove the airbox resonator but utilize the resonator hole and connect tubing to it and duct it passenger side for more fresh air intake. Anyone see any cons doing this? It's a small hole but a little more air with a K&N drop in filter should help. Just wondering if this would create turbulence inside the box entry and hinder airflow altogether. Just an idea. Attached Images __________________ My 2016 Build thread TRD Exhaust with custom quad tips, TRD Lowering Springs,TRD Quick shifter,LED;DRL, Projectors, and turn signals. Re-badge, 86 Nanny, WinmaxW2 Pads, K&N Drop In, Antenna delete

11-04-2015, 11:46 AM	#3
fang_gt86 FR Noob Join Date: Jun 2013 Drives: FR-S Location: DFW Posts: 792 Thanks: 218 Thanked 614 Times in 318 Posts Mentioned: 2 Post(s) Tagged: 3 Thread(s)	My wildest guess is that it'll create a turbulence within the box. This may ruin the smooth airflow that comes only from the front. A lot of air means nothing if it doesn't flow smoothly. __________________ "I'm having too much fun to care about horsepower" - Unknown 6MT FR-S Whiteout:OFT- OTS V2 Stage 2 (93oct & E85), Tomei UEL, Invidia OP, JDL UltraQuiet FP, Ark Grip catback, GS hood struts, Perrin Inlet & K&N drop-in

11-04-2015, 12:06 PM	#6
stevesnj Senior Member Join Date: May 2013 Drives: 2016 FR-S Oceanic Blue Location: Southern NJ Posts: 2,958 Thanks: 2,158 Thanked 1,601 Times in 923 Posts Mentioned: 30 Post(s) Tagged: 2 Thread(s)	Will removing the resonator effect anything? is it a sound resonator or airflow resonator? __________________ My 2016 Build thread TRD Exhaust with custom quad tips, TRD Lowering Springs,TRD Quick shifter,LED;DRL, Projectors, and turn signals. Re-badge, 86 Nanny, WinmaxW2 Pads, K&N Drop In, Antenna delete

11-04-2015, 01:57 PM	#8
Tcoat Senior Member Join Date: Jul 2014 Drives: 2020 Hakone Location: London, Ont Posts: 69,841 Thanks: 61,656 Thanked 108,295 Times in 46,456 Posts Mentioned: 2499 Post(s) Tagged: 50 Thread(s)	Unlike the sound tube this is not something I would second guess the design engineers on. __________________ Racecar spelled backwards is Racecar, because Racecar.

11-04-2015, 03:16 PM	#9
stevesnj Senior Member Join Date: May 2013 Drives: 2016 FR-S Oceanic Blue Location: Southern NJ Posts: 2,958 Thanks: 2,158 Thanked 1,601 Times in 923 Posts Mentioned: 30 Post(s) Tagged: 2 Thread(s)	So after a few hours of research it seems removing the resonators, any or all 4 is not a good idea. If you have a CAI without a tune it seems there is no effect other than more intake noise. Anyway To keep a stable airflow through the OEM velocity stack (scoop) is designed to keep "air reversion" from happening, the resonators are key to this process.. Also the MAF is looking for a stock airstream at a certain temp, pressure and volume. A CAI with a tune specific for the CAI should be more effective. Keeping a consistent airflow before and after the airbox seems most important. So since i'm not going to be tuning my car for a long while it seems a simple K&N filter will help with a more consistent flow of air, pressure and intake temps without inducing unwanted turbulence. At least this is what I think this all means..lol Sources; What do air intake resonators do? Has anyone deleted the resonator in the stock airbox? __________________ My 2016 Build thread TRD Exhaust with custom quad tips, TRD Lowering Springs,TRD Quick shifter,LED;DRL, Projectors, and turn signals. Re-badge, 86 Nanny, WinmaxW2 Pads, K&N Drop In, Antenna delete

11-04-2015, 11:51 AM	#4
go_a_way1 Not Bаnned Anymore Join Date: Jan 2015 Drives: Heavily Modified FRS Location: Calgary, AB Posts: 9,827 Thanks: 14,918 Thanked 8,275 Times in 4,797 Posts Mentioned: 355 Post(s) Tagged: 374 Thread(s)	I think this is a waste of time as you pull cold air in from the front bumper already.

11-04-2015, 04:19 PM	#10
Teseo Senior Member Join Date: Jun 2014 Drives: frs Location: Gunsai Posts: 4,952 Thanks: 7,466 Thanked 2,980 Times in 1,802 Posts Mentioned: 23 Post(s) Tagged: 2 Thread(s)	So the case is over?

11-04-2015, 04:45 PM	#12
Leonardo Country Boy 4 Life Join Date: Jul 2012 Drives: 19' & 06' Ridgelines, 13' FR-S Location: EUGENE Posts: 5,228 Thanks: 6,719 Thanked 5,293 Times in 2,720 Posts Mentioned: 47 Post(s) Tagged: 1 Thread(s)	Nice. Wondered this myself. It's ugly, but does its job. Good to know.

11-04-2015, 04:52 PM	#13
stevesnj Senior Member Join Date: May 2013 Drives: 2016 FR-S Oceanic Blue Location: Southern NJ Posts: 2,958 Thanks: 2,158 Thanked 1,601 Times in 923 Posts Mentioned: 30 Post(s) Tagged: 2 Thread(s)	Anyone know if the TRD intake does or does not use the resonators? By the pics I see the TRD eliminates all but the velocity stack resonators. Maybe why it is so big compared to stock. Seems expensive but engineered perfect to the engine. __________________ My 2016 Build thread TRD Exhaust with custom quad tips, TRD Lowering Springs,TRD Quick shifter,LED;DRL, Projectors, and turn signals. Re-badge, 86 Nanny, WinmaxW2 Pads, K&N Drop In, Antenna delete

11-04-2015, 08:44 PM	#14
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)	It's big by simple principle. Bigger area of filter = less pressure needed/less restriction to air flow divided over that area. But imho gains are a bit insufficient for cost.

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