Ej255 throttle questions
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This is a discussion on Ej255 throttle questions within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; Is the 2011+ ej255 throttle by wire or by cable, some say one, and some the other. Anyone have a ...

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    Ej255 throttle questions

    Is the 2011+ ej255 throttle by wire or by cable, some say one, and some the other.
    Anyone have a definitive answer? (Forgive my ignorance)

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    Registered User cflip2x's Avatar
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    By Wire for 06-up
    By Cable for 02-05
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    Thank you

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    So then, in theory, a 2011+ STI manifold will fit/function?

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    Subaru Newb MainFrame's Avatar
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    Quote Originally Posted by Me6er View Post
    So then, in theory, a 2011+ STI manifold will fit/function?

    On a 2011+ WRX? You can make it fit and work , but you will need to replace other stuff to do so.. like the turbo and intercooler.

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    Luke Skywalker Mikie13's Avatar
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    The WRX mani is arguably better anyway considering it's a dense plastic. It has more of a tendency to reduce heat soak when compared to the aluminum manifolds on STIs.
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    Subaru Newb MainFrame's Avatar
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    Quote Originally Posted by Mikie13 View Post
    The WRX mani is arguably better anyway considering it's a dense plastic. It has more of a tendency to reduce heat soak when compared to the aluminum manifolds on STIs.

    The plastic manifold flows the least out of all the recent OEM intake manifolds.. of course it won't make much of a difference with the stock turbo on there.

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    I agree with both of you. Though it may flow the least, on the stock turbo the thermal resistance should not be ignored.
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    Subaru Newb MainFrame's Avatar
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    Quote Originally Posted by zax View Post
    I agree with both of you. Though it may flow the least, on the stock turbo the thermal resistance should not be ignored.

    Yup.. it's probably the best manifold to run on a stock turbo setup, but once you go bigger there are some gains to be had by replacing it.

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    So the consensus is, I could use an sti style manifold once I go FMIC and bigger
    Turbo, it seems.

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    MAINEiac 11blackSTi's Avatar
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    Quote Originally Posted by Me6er View Post
    So the consensus is, I could use an sti style manifold once I go FMIC and bigger
    Turbo, it seems.
    If you are going go through the hassel of replacing it with an STi intake manifold I would get it coated and PnP'd by Grimmspeed. Intake Manifold Porting/Coating - Subaru STI - GrimmSpeed

    Also, wouldn't be a bad time to do TGV deletes.

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    zax
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    I just would never go that far...
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    Thanx for the info.

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    Subaru Newb MainFrame's Avatar
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    Quote Originally Posted by Me6er View Post
    So the consensus is, I could use an sti style manifold once I go FMIC and bigger
    Turbo, it seems.

    You could.. but there are better options, for less money. The STi manifold isn't really an upgrade, so I'm not sure why you would do that.

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