1ZZ throttle - Not Optimized Yet! - Toyota Yaris Forums

fuji · 05-31-2009, 04:47 AM

Well, just finished the 1ZZ install without a hitch. No cel! The problem I saw when I installed the throttle body was the manifold has a opening which is too small and restricts the airflow. To really take advantage of the new throttle body, I think we need a newly designed intake manifold. Any thoughts??

In addition, what intake system are people using with the new throttle body? Perhaps something designed for the 1.8 liter TS or even a Matrix intake?

marcus · 05-31-2009, 09:30 AM

yah someone had a prototype but i guess decided to cancel the project..*sigh* too bad.. 15-20 hp increase for under $700 sounds very reasonable.

AlexNet0 · 05-31-2009, 09:56 AM

^yeah, but garm is picking it back up

To the OP, if you feel comfortable, you can port match the intake manifold, it just wont fit the stock TB with its gasket after you do this

cali yaris · 05-31-2009, 11:17 AM

It's picked up. DynaTek is interested, and I already have a backup fabricator if they fail to come through again. However, the intake manifold project was based on using a stock throttle body. If we limit it to throttle body swaps, it might mean not enough sales to do the manifolds. And I'm not doing a bunch of versions, so let that be known.

fuji · 05-31-2009, 11:58 AM

As long as the new intake manifold is made out of metal and it is thick enough, it can be bored out. This will avoid the strange 90 degree lip where the throttle body connects to the intake manifold. Even more gains!

As long as there is a will, we will find a way!

06silveryaris · 05-31-2009, 12:46 PM

i haven't looked at the manifold entrance but can't the plastic one be bored out?

gwasabi · 05-31-2009, 04:01 PM

I'm pretty sure the plastic one can be bored out. Use a dremel tool or something. I was actually thinking of doing this soon but i messed up my manifold so i'm looking for a stock manifold to buy. hahaha

Thirty-Nine · 05-31-2009, 05:18 PM

About nine years ago, I had a Ford Focus and bought a larger throttle body for it. I port matched the intake manifold, and it was made out of plastic. I just stuffed a rag down into the manifold and used a Dremel and a vacuum to suck out the bits. Worked very well. I'd try the 1ZZ-FE TB, but would make sure to bore out the manifold. Otherwise, it's just bottle necking the airflow.

frownonfun · 05-31-2009, 05:29 PM

Quote:

Originally Posted by cali yaris

It's picked up. DynaTek is interested, and I already have a backup fabricator if they fail to come through again. However, the intake manifold project was based on using a stock throttle body. If we limit it to throttle body swaps, it might mean not enough sales to do the manifolds. And I'm not doing a bunch of versions, so let that be known.

so stick with the stock throttle body is what you are saying? if we are interested in this manifold that is?

cali yaris · 05-31-2009, 05:59 PM

Quote:

Otherwise, it's just bottle necking the airflow.

People who have done the throttle body mod report more power. Port matching would do even more.

Frown, I'm not saying I won't do it, but it will be dependent on interest, how many people want to go the whole way with intake mani + larger TB.

DJPaneno · 05-31-2009, 06:25 PM

I would be interested, already planning on swapping the throttle body as my next project. I don't know how much something like an intake manifold costs, but it sounds useful.

Thirty-Nine · 05-31-2009, 07:42 PM

Quote:

Originally Posted by cali yaris

People who have done the throttle body mod report more power.

Yeah, well the "butt dyno"is a bit subjective until a real dyno run is done.

Throttle response is one thing ...

yarstar · 05-31-2009, 08:49 PM

I've swapped mine, Garm, but I'll go with whatever you produce and mod it if necessary.

Thanks for picking the ball back up on this. I think it will make significant gains.

cali yaris · 05-31-2009, 09:08 PM

The butt dyno IS subjective, that is true. But when someone like Jkuchta, whose racing and technical expertise surpasses my own, says it makes a difference, I'll take that as being true.

whooppee777 · 05-31-2009, 09:18 PM

Quote:

Originally Posted by Thirty-Nine

Otherwise, it's just bottle necking the airflow.

has no one heard of the venturi effect?

http://en.wikipedia.org/wiki/Venturi_effect

Galavoxx · 05-31-2009, 09:56 PM

Hey Garm, when can we expect to see the production pieces done assuming DynaTek does pick up the production for the intake? I'm not sure you mentioned this in the intake thread. I'll take whatever you make!!

cali yaris · 05-31-2009, 10:01 PM

I'm not sure, but I'm having a phone conversation with DynaTek again tomorrow.

fuji · 06-01-2009, 01:05 AM

An improved intake WITH the 1zz throttle body is going to make some awesome gains! I CANT WAIT!

05-31-2009, 04:47 AM	#1
fuji Drives: Polar White Yaris HB Join Date: Dec 2008 Location: Honolulu Posts: 263	1ZZ throttle - Not Optimized Yet! Well, just finished the 1ZZ install without a hitch. No cel! The problem I saw when I installed the throttle body was the manifold has a opening which is too small and restricts the airflow. To really take advantage of the new throttle body, I think we need a newly designed intake manifold. Any thoughts?? In addition, what intake system are people using with the new throttle body? Perhaps something designed for the 1.8 liter TS or even a Matrix intake?

05-31-2009, 09:56 AM	#3
AlexNet0 View User's Garage Drives: '07 Yaris 3dr Join Date: Nov 2008 Location: Rockland, ME Posts: 1,638	^yeah, but garm is picking it back up To the OP, if you feel comfortable, you can port match the intake manifold, it just wont fit the stock TB with its gasket after you do this __________________ ---------- MI-YW ----------

05-31-2009, 11:17 AM	#4
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	It's picked up. DynaTek is interested, and I already have a backup fabricator if they fail to come through again. However, the intake manifold project was based on using a stock throttle body. If we limit it to throttle body swaps, it might mean not enough sales to do the manifolds. And I'm not doing a bunch of versions, so let that be known. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

05-31-2009, 04:01 PM	#7
gwasabi View User's Garage Drives: 07 Blazing Blue LB Join Date: Jun 2007 Location: Honolulu, Hawaii Posts: 692	I'm pretty sure the plastic one can be bored out. Use a dremel tool or something. I was actually thinking of doing this soon but i messed up my manifold so i'm looking for a stock manifold to buy. hahaha __________________ Most Satisfying Crew Serious Business... MunkyWurks Garage - 8088488794

05-31-2009, 05:18 PM	#8
Thirty-Nine Small cars are a big deal View User's Garage Drives: 2007 Yaris Liftback Join Date: Feb 2006 Location: Portland, OR Posts: 3,144	About nine years ago, I had a Ford Focus and bought a larger throttle body for it. I port matched the intake manifold, and it was made out of plastic. I just stuffed a rag down into the manifold and used a Dremel and a vacuum to suck out the bits. Worked very well. I'd try the 1ZZ-FE TB, but would make sure to bore out the manifold. Otherwise, it's just bottle necking the airflow. __________________ Subcompact Culture: The Small car blog

05-31-2009, 09:30 AM	#2
marcus toyota View User's Garage Drives: 2007 Yaris RS Blazed Join Date: Oct 2006 Location: toronto, canada Posts: 3,637	yah someone had a prototype but i guess decided to cancel the project..sigh too bad.. 15-20 hp increase for under $700 sounds very reasonable.

05-31-2009, 11:58 AM	#5
fuji Drives: Polar White Yaris HB Join Date: Dec 2008 Location: Honolulu Posts: 263	As long as the new intake manifold is made out of metal and it is thick enough, it can be bored out. This will avoid the strange 90 degree lip where the throttle body connects to the intake manifold. Even more gains! As long as there is a will, we will find a way!

05-31-2009, 12:46 PM	#6
06silveryaris Drives: 2006 yaris Join Date: Oct 2008 Location: Puerto Rico Posts: 536	i haven't looked at the manifold entrance but can't the plastic one be bored out?

05-31-2009, 06:25 PM	#11
DJPaneno View User's Garage Drives: 07 Yaris Sedan Join Date: Oct 2008 Location: San Diego, CA Posts: 24	I would be interested, already planning on swapping the throttle body as my next project. I don't know how much something like an intake manifold costs, but it sounds useful.

05-31-2009, 08:49 PM	#13
yarstar View User's Garage Drives: 2008 Absolute Red HB Join Date: Oct 2008 Location: Georgia Posts: 264	I've swapped mine, Garm, but I'll go with whatever you produce and mod it if necessary. Thanks for picking the ball back up on this. I think it will make significant gains. __________________ AEM CAI, NST Pulleys/SSK, WR 4-2-1 Header, TRD axelback, R1 Concept Rotors, TRD Sway Bar, Nitto Rear Strut Bar, Cusco GT-Zero Coilovers, 1ZZ-FE 1.8L TB

05-31-2009, 09:08 PM	#14
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	The butt dyno IS subjective, that is true. But when someone like Jkuchta, whose racing and technical expertise surpasses my own, says it makes a difference, I'll take that as being true. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

05-31-2009, 09:56 PM	#16
Galavoxx View User's Garage Drives: Yaris Hatch Join Date: Oct 2006 Location: San Francisco Posts: 397	Hey Garm, when can we expect to see the production pieces done assuming DynaTek does pick up the production for the intake? I'm not sure you mentioned this in the intake thread. I'll take whatever you make!!

05-31-2009, 10:01 PM	#17
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	I'm not sure, but I'm having a phone conversation with DynaTek again tomorrow. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

06-01-2009, 01:05 AM	#18
fuji Drives: Polar White Yaris HB Join Date: Dec 2008 Location: Honolulu Posts: 263	An improved intake WITH the 1zz throttle body is going to make some awesome gains! I CANT WAIT!

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