Individual Throttle Body Development - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

86drift · 06-12-2016, 07:36 PM

I've make this thread to document the development of ITBs for our platform. After 4 yrs I've given up waiting for someone else to do it.

First things first. ITBs are unlikely to be a performance improvement over the stock manifold. The engine makes 100hp/l out of the factory which is impressive and mine was running at around 125hp/l. Improvements on that would be marginal at best without some serious cams and head work.

This brings me to why anyone would want ITBs. If you've owned a car with ITBs you'll understand. It's about the glorious sound and instantaneous throttle response. Some people will never get it, mainly because they'll never own a car with ITBs.

Progress so far. First prototype manifold fitted. A few minor changes but so far so good.

86drift · 06-12-2016, 07:36 PM

Reserved.

celek · 06-12-2016, 08:43 PM

have you missed my NA build?

FRSBRZGT86FAN · 06-12-2016, 09:02 PM

Subbed to here the glorious ITB sound on the FA20

kitlives · 06-13-2016, 10:31 AM

Amazing! Ive been waiting for someone to do it. Is it based off of dcoe design? Also is there a way to pu lt a deposit down on a set?

Teseo · 06-13-2016, 10:50 AM

With that set up engine will need a tune? No plenum with air filter? Throttle is via ecu, how much throttle response?

86drift · 06-13-2016, 07:01 PM

Quote:

Originally Posted by kitlives

Amazing! Ive been waiting for someone to do it. Is it based off of dcoe design? Also is there a way to pu lt a deposit down on a set?

I'm currently deciding between DCOE, IDA and other throttle body designs. DCOE is cheap and easy to get. But throttle plates diameter is limited to 50mm. The centerline between plates is much smaller than IDA and you can get 55mm IDA no worries. I'm also looking at other options for both ones with injector bungs and ones without.

Quote:

Originally Posted by Teseo

With that set up engine will need a tune? No plenum with air filter? Throttle is via ecu, how much throttle response?

At this stage I'll be doing a combined MAP/TPS based tune on my standalone ECU. Undecided between throttle cables and DBW. I'd hate to have the DBW dull the awesome throttle response you get from ITBs.

Reamer · 06-14-2016, 06:20 AM

Quote:

Originally Posted by FRSBRZGT86FAN

Subbed to here the glorious ITB sound on the FA20

Agreed.

Quote:

Originally Posted by celek

have you missed my NA build?

Subbed to yours the other day

86drift · 06-14-2016, 10:57 PM

This is what it looks like with a DCOE pattern (ignoring the lip in the flange).

kitlives · 06-16-2016, 02:05 AM

nice!!! looking fwd to the updates.

COO86L · 06-16-2016, 11:12 PM

Subscribe me up!

D_Thissen · 06-16-2016, 11:24 PM

Sub'd

monstrum · 06-27-2016, 10:44 AM

Subbed, I was going to take mine into Jenvey who are situated about an hour from me, if their ITBs are good enough for pagani, they are good enough for me. That won't be happening for some time though, so im really interested in seeing your design (and how it compares to 86drift's)

cdrazic93 · 06-27-2016, 12:00 PM

'straya.

06-12-2016, 07:36 PM	#1
86drift Join Date: Jun 2012 Drives: Toyota 86 GT Location: Sydney, Australia Posts: 517 Thanks: 85 Thanked 263 Times in 147 Posts Mentioned: 24 Post(s) Tagged: 0 Thread(s)	Individual Throttle Body Development I've make this thread to document the development of ITBs for our platform. After 4 yrs I've given up waiting for someone else to do it. First things first. ITBs are unlikely to be a performance improvement over the stock manifold. The engine makes 100hp/l out of the factory which is impressive and mine was running at around 125hp/l. Improvements on that would be marginal at best without some serious cams and head work. This brings me to why anyone would want ITBs. If you've owned a car with ITBs you'll understand. It's about the glorious sound and instantaneous throttle response. Some people will never get it, mainly because they'll never own a car with ITBs. Progress so far. First prototype manifold fitted. A few minor changes but so far so good.

06-12-2016, 09:02 PM	#4
FRSBRZGT86FAN Senior Member Join Date: Jun 2013 Drives: 2023 GR SUPRA,15 FR-S (SOLD) Location: Philadelphia, PA Posts: 4,235 Thanks: 3,086 Thanked 2,100 Times in 1,397 Posts Mentioned: 31 Post(s) Tagged: 2 Thread(s)	Subbed to here the glorious ITB sound on the FA20 __________________ SOLDOFT Stage 2 UEL E85/Nameless Performance 3 inch axleback with 5 inch mufflers/ TRD CAI / CNT UEL/ Cusco Strut BAR & LHD Brake Stop / "JDM" Toyota Badges / WinJet JDM headlights - DRL MOD from fteightysix.com - 5000K Diode Dynamics HID kit / Diode Dynamics LED interior Lights and sidemarker bulbs / JDM Clear Sidemarkers / Diode Dynamics LED switchbacks/ OLM LED rear turn signals / Tap Turn RelaySOLD

06-16-2016, 11:24 PM	#12
D_Thissen Senior Member Join Date: Jan 2014 Drives: '13 Argento FR-S (Sold) Location: Ontario Posts: 2,126 Thanks: 3,209 Thanked 1,439 Times in 855 Posts Mentioned: 19 Post(s) Tagged: 2 Thread(s)	Sub'd __________________ My FR-S Build IG: dthissen

06-27-2016, 12:00 PM	#14
cdrazic93 Junior Join Date: Aug 2013 Drives: a car Location: Probably at school Posts: 4,341 Thanks: 3,184 Thanked 2,512 Times in 1,502 Posts Mentioned: 20 Post(s) Tagged: 0 Thread(s)	'straya. __________________ "Ah! What music! They could have never imagined, those pioneers who invented the automobile, that it would posses us like this, our imaginations, our dreams. Men love women, but even more than that, men love CARS!"-Lord Hesketh

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06-13-2016, 10:31 AM	#5
kitlives Member Join Date: Apr 2016 Drives: 2013 Gt86 Location: Guam Posts: 21 Thanks: 27 Thanked 63 Times in 17 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Amazing! Ive been waiting for someone to do it. Is it based off of dcoe design? Also is there a way to pu lt a deposit down on a set?

06-13-2016, 10:50 AM	#6
Teseo Senior Member Join Date: Jun 2014 Drives: frs Location: Gunsai Posts: 4,877 Thanks: 7,143 Thanked 2,922 Times in 1,769 Posts Mentioned: 23 Post(s) Tagged: 2 Thread(s)	With that set up engine will need a tune? No plenum with air filter? Throttle is via ecu, how much throttle response?

06-14-2016, 10:57 PM	#9
86drift Join Date: Jun 2012 Drives: Toyota 86 GT Location: Sydney, Australia Posts: 517 Thanks: 85 Thanked 263 Times in 147 Posts Mentioned: 24 Post(s) Tagged: 0 Thread(s)	This is what it looks like with a DCOE pattern (ignoring the lip in the flange).

06-16-2016, 02:05 AM	#10
kitlives Member Join Date: Apr 2016 Drives: 2013 Gt86 Location: Guam Posts: 21 Thanks: 27 Thanked 63 Times in 17 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	nice!!! looking fwd to the updates.

06-16-2016, 11:12 PM	#11
COO86L Senior Member Join Date: Dec 2015 Drives: 2015 86 GTS + Mitsi Lancer GSR Location: Lismore AUS Posts: 215 Thanks: 127 Thanked 93 Times in 68 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Subscribe me up!

06-27-2016, 10:44 AM	#13
monstrum Junior Member Join Date: Dec 2015 Drives: 2015 Subaru BRZ 6MT Location: United Kingdom Posts: 3 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Subbed, I was going to take mine into Jenvey who are situated about an hour from me, if their ITBs are good enough for pagani, they are good enough for me. That won't be happening for some time though, so im really interested in seeing your design (and how it compares to 86drift's)

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