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Air regulator


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Hay guys just doing a bit of a clean up on the intake side of my rb25det and wanted to know if the air regulator is necessary or can I get rid of it?

Any info will be greatly appreciated

PS this is my first engine build

Screenshot_20190821-182612_Google.jpg

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Its function is to open up when cold to allow a lot of extra air through to give you your cold fast idle. It is electrically heated and closes up as it (and presumably) the engine warms up. After that the normal idle control valve takes over (but is not necessarily large enough to flow enough air to give the required cold fast idle).

What are you using for management and idle control? If using aftermarket ECU and a TB with a decent stepper motor idle control valve (or good separate idle control valve) then you could get rid of this one. But if you just ditch it without taking that sort of thing into consideration, it might be a bit grumpy when cold.

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