Small hose near intake??
#1
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Hi,
I've been DIY boosting my car for the past week or so, and when I was fitting the cold side ducting I realised that there was a small hose to the bottom left of the throttle body that was sucking in air with nothing attached to it.
I have tried to find out what it is, and whether it needs atmospheric pressure or boost.
I've pinched a picture from youtube to try to help me explain what is it, but the hose with a red ring around it is the one I'm after.
http://puu.sh/odBC3/99ccfc5730.jpg
I'm in the dark, any advice would be highly appreciated, thanks!
I've been DIY boosting my car for the past week or so, and when I was fitting the cold side ducting I realised that there was a small hose to the bottom left of the throttle body that was sucking in air with nothing attached to it.
I have tried to find out what it is, and whether it needs atmospheric pressure or boost.
I've pinched a picture from youtube to try to help me explain what is it, but the hose with a red ring around it is the one I'm after.
http://puu.sh/odBC3/99ccfc5730.jpg
I'm in the dark, any advice would be highly appreciated, thanks!
#7
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
If you still have the MAF it has to be plumbed into the intake. If you've converted to a MAP sensor then it will run fine, but boost will leak out of the valve. Ideally you want it plumbed in, but I've run mine with a check valve and a little breather filter on it. The added restriction of the filter and check valve made tuning idle more difficult but ultimately it worked.
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