Never seen this before. anyone know what is it 4?   is a small hole not connected to anything. 

 

Considering filling it because i dont see point of it. But i am not engineer and i will not do anything, before someone come with some suggestions : )

 

Thanks  

Water drain hole, I should think.

i dont think so since i have one at the star of intake is like this on pic. 

 

 

 

in my eyes is producing some kind of leak..

i check with skoda this on pic above is drain pipe. 

 

i asked for hole they didnt know

better pic of drain pipe 

I wouldn't bother filling it as it won't make any difference to how it operates.

yeah ok, but

arent you curious what is it and why is there?  i was at junkyard today looking at other filter box and didnt see it. looks like 1.4tsi only 🤷🏽‍♂️

Air return from turbo?