[Najainitro]

Hey guys,

Can anyone tell me what the pipe circled on the below pic is for? It’s on a 2013 316d

It comes off the air intake and connects to the air box but it seems a little pointless as it just joins up to the main pipe...

I’m looking to add a performance filter and intake but don’t know what to do about that pipe whether to block it off or get a little filter for it?

PS it’s an internet photo and not my actual engine, in case you were wondering about the smashed windscreen!

Thanks

[Mouse]

I believe that pipe goes to some sort of PCV "catch can" for cold climate vehicles. I know people in warmer climates delete it, but I would do homework and make sure as that's the best of my knowledge of what it is.

[Wires]

That was going to be my guess as well, but not 100% sure...