Whats This What Does It Do

[falcon73]

Posted this elswhere and have rung places cant get a definite answer.

G'day all, as the heading suggest I am seeking clarification on what this part is and what it does.

as you can see mine has been changed, the big blue and black thing goes in where the small blue thing is and the pipe you see it connected to goes to a little black box looking thing then to the ecu area

from what I can tell it is a one way air valve,

for it to open the air can be sucked thru from the blue part to the black part but not the other way.

Hope this makes sense

What is it

What does it do

does it hamper cars performance if changed.

[senna_T]

that photo is tricky, it doesn't give you a good idea of what it may be, any other photos for reference???

[GOLDIE]

That is a one way valve it is used to help retain vacumn to the dash and vent controls under full accl.

Ian

[falcon73]

So would cause problem taking it out ot adjusting it to the performance of the engine in any way

[BFHOON]

I think its also called a check valve.

goldie is correct.

[GOLDIE]

No performance changes at all only you may find that the airflow though the vents in side the car maybe effected.

Ian

[falcon73]

Have done some more research into this and have got the below info.

I have changed it back to having the one way valve in and there is a difference to the car.

"The photo is a little too close, but it looks like its fitted inline to the vacuum system that supports the fuel pressure regulator, an area where backflow would not be good."

Had a good look and the piping runs down to a soliniod and then splitsinto two one back to the ecu,and the second to a reservior tank type thing under the front gaurd, it doesnt actually go inside the car or attached to anything to do with the air con, vents etc.

[senna_T]

interesting, was the difference good or bad, or strange?

[falcon73]

interesting, was the difference good or bad, or strange?

good, I seem to have had a flat spot before and now clean revs, that's the feel anyway

[senna_T]

Well, at least there is a good result, glad you found out what it was