[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

[Soul_Glo]

It's called a vacuum line. A decent aftermarket induction kit will have an insert for this. I think the AfE one has an insert.

Which one are you thinking of? What's your engine size, fuel type and, state of tune?

[isleaiw1]

Originally Posted by Chelsea_Tractor

What model? Year? Engine size?

If it's a diesel you will have no benefits from it other than the longevity between filter changes.

Why not a panel filter? Must it be a full on induction system?

I’d guess a 2013 316d...

[Sasquartch]

Absolutely pointless mod on a diesel

You will almost certainly reduce the power by discarding the OE airbox and potentially cause problems with your MAF

[330XDave]

Not being funny, each to their own and all that but...

Are you really considering tuning a 316d?

Why not just buy a 320d which can't be too much more and it'll have more power than you'll ever have in the 316d.

[doncarlyon]

And it will sound terrible

[Najainitro]

Originally Posted by Chelsea_Tractor

It's called a vacuum line. A decent aftermarket induction kit will have an insert for this. I think the AfE one has an insert.

Which one are you thinking of? What's your engine size, fuel type and, state of tune?

Thanks for the reply....

It’s a 2013 316d but it’s been re-mapped to 200bhp...

I’ve built a cold air intake and incorporated the maf into it and used a proram filter...happy with the outcome and it gives off a nice ‘woosh’.

What exactly does the vacuum pipe do? I’ve placed a small filter on the end of it for now.

Cheers

[Soul_Glo]

Originally Posted by Najainitro

Thanks for the reply....

It’s a 2013 316d but it’s been re-mapped to 200bhp...

I’ve built a cold air intake and incorporated the maf into it and used a proram filter...happy with the outcome and it gives off a nice ‘woosh’.

What exactly does the vacuum pipe do? I’ve placed a small filter on the end of it for now.

Cheers

I have no idea. Something to do with the vacuum system likely.