[Engine] Missing "hose" between air filter and something else

[YTC1]

[attachment=3812][attachment=3812]
The reason why I was looking for a manual (see other thread) was because I have spotted a missing tube that connects the air filter to some pre-filter device (on the front of the engine bay).

As I don't have the manual, I can't work out the name or a search term to find the part (short of visiting a Citroen garage).

(Hmm, pictures will not attach)

[YTC1]

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[Lighty]

You need this part, but a new one from Citroen is probably cheaper.
https://www.ebay.co.uk/itm/152690476813

[YTC1]

You need this part, but a new one from Citroen is probably cheaper.
https://www.ebay.co.uk/itm/152690476813

Thanks, now I know what it looks like and is called I have a chance of getting one :-)
I'll check Citroen out this week.

[Luis Rosa]

The box in front is the resonance box...the tube/hose you need connects the resonance box to the air filter...

[YTC1]

And now the next question :-). What does it do ?

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[Luis Rosa]

And now the next question :-). What does it do ?

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google is our friend:

https://en.wikipedia.org/wiki/Airbox
https://motorcycleinfo.calsci.com/Airboxes.html

[YTC1]

And now the next question :-). What does it do ?

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google is our friend:


https://en.wikipedia.org/wiki/Airbox
https://motorcycleinfo.calsci.com/Airboxes.html

Only when I type the right words in :-)

Ta, the motorbike reference gives the best explanation.
Hmm, I wonder if this is what causes the slight "dip"/"flutter" in power I feel when the revs are a bit low.