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ISC/IAC valve plumbing?


Adoom

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FYI: Idle Speed Control/Idle Air Control...

On my CA18DET I need some crazy snake hose to plump the IAC valve to the intake pipe. Can I just stick a little filter directly onto the valve and not have to have the long hose? I can't think why it would not work. It's not like it needs boost pressure... it only opens when the engine is idling.

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Itll leak plumb it in before throttle plate also if you have afm it will not meter that air at idle so itll be all out of wak

I should have mentioned that the engine has a link ecu and is using a MAP, not an AFM. So if it leaks, it should make no difference if it leaks through its own filter or via the main intake pipe, right?

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If you plumb it back into pre-throttle body somewhere, when it makes boost the pressure on both side is balanced so no leak.

Depends on the ISCV unit I guess but not plumbing back to pipe and you'll have air blowing back out through it.

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If you plumb it back into pre-throttle body somewhere, when it makes boost the pressure on both side is balanced so no leak.

Depends on the ISCV unit I guess but not plumbing back to pipe and you'll have air blowing back out through it.

Ah, I see the boost leaks out. spose I need that long ugly pipe.

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