Look at this 1nz - Toyota Yaris Forums

CASTREX · 03-19-2009, 05:15 PM

Yeap, the ITB's are an amazing concept, but in the real world is just not Cost Effective....

N/A power will always be more expensive than force induction... and you can not take advantage of it on the street. That is unless you drive at the edge of the red line all day long

About the comments regarding reliability... that is just not true! There are many cars that came from the factory with ITB's including Toyotas and were as realiable as any other!

Also about the filtration problems... there are ways around it!! Race cars with ITB's many times will use a full cover and use a regular cone filer at one end... There are also foam filters designed for use on the ITB's.

Yeah, a lot of people will just run the stacks open and exposed... just to be able to show their shiny and expensive set up... but that is a different story.

On a Yaris, a ITB set up will REQUIRE a full stand alone set up and probably cable throttle conversion. No way around it...

And to really take advantage of the ITB's a significant amount of engine work would have to be done... agressive cams, head work.... etc

There are reasons why ITB's exist.

If you want to have a Unique Yaris... what better way???

If you are just in love with the sound of the ITB's

In motor sports, when you need to make the most possible power out of a power plant and by the regulation you are not allowed to use forced induction.

But HP/$$ ratio is not one of the reasons.

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03-19-2009, 05:15 PM	#1
CASTREX Who said Yaris was slow? View User's Garage Drives: Yaris T-Sport 2008 Join Date: Nov 2006 Location: Costa Rica Posts: 1,287	Yeap, the ITB's are an amazing concept, but in the real world is just not Cost Effective.... N/A power will always be more expensive than force induction... and you can not take advantage of it on the street. That is unless you drive at the edge of the red line all day long About the comments regarding reliability... that is just not true! There are many cars that came from the factory with ITB's including Toyotas and were as realiable as any other! Also about the filtration problems... there are ways around it!! Race cars with ITB's many times will use a full cover and use a regular cone filer at one end... There are also foam filters designed for use on the ITB's. Yeah, a lot of people will just run the stacks open and exposed... just to be able to show their shiny and expensive set up... but that is a different story. On a Yaris, a ITB set up will REQUIRE a full stand alone set up and probably cable throttle conversion. No way around it... And to really take advantage of the ITB's a significant amount of engine work would have to be done... agressive cams, head work.... etc There are reasons why ITB's exist. If you want to have a Unique Yaris... what better way??? If you are just in love with the sound of the ITB's In motor sports, when you need to make the most possible power out of a power plant and by the regulation you are not allowed to use forced induction. But HP/$$ ratio is not one of the reasons.