[reilsab]

I was checking my oil yesterday and noticed an open hole which looks like is in the air intake?It's located in front of the oil dipstick which is how i noticed it.

Here's a pic, do they all have this or have i something missing?

 

[SeaBox]

Hi,
Incredible coincident because I was checking my oil yesterday and noticed the some hole so you are not alone. I think is must act as some kind of pulse dampener but only guessing really - you can feel air pulsing when the engine is running.

 

[reilsab]

Thanks Seabox, i was thinking maybe something had fallen out

 

[audidriver4ever]

Well you are (all) not the only ones that spotted this hole.

I looked on a German Forum and found out that without this hole, your TDI would make a lot more engine noise. The hole chances the air-stream enough to make the engine more quiet.

And, the other way around I did see with the Lexus LFA. The air-box and intake are specially design to alter the air-stream, and in that way the car produces now a F1 engine sound.