E90 N55 Vacuum line differences

[corp]

Hi all,

So I want to replace my vacuum lines and from what I can distinguish, part 3, 4 and 5 are the only lines on my E90 N55.

Questions I have:

1.) What is the part on the image middle way through part 3?

2.) What is different about part 5 vs 3 &4? I see it is called a hose instead of a pipe.

3.) Vee's Auto Pipes can supply lines, starting from R60 a meter. BMW quoted me about R420 for part 3 and 4 each and almost R700 for part 5. Are there special curves, bends and/or heat resistance on the OEM pipes which makes them a better choice?

4.) Are there any clips or fasteners I need or do these just slide on?

5.). Are there other lines besides parts 3,4 and 5?



I am definitely noticing the car doesn't have the same pep it when I first bought it so I am wanting to start fixing where I can.


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[corp]

Finally took a look for the pipes today to see what it looks like.

Pipe 3 looks spotless. Which is great cause BMW has no stock and would take 3 weeks to import if I wanted OEM.

Pipe 4 is a braided pipe. Don't know if that is OEM but I have my suspicions about that and it looks a little fatigued.

Hose (part 5) looks okay but if I am replacing 4 then I might as well replace 5 as well. Don't see how this tiny piece costs R700 at BMW though.

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[corp]

Any insights from the more knowledgeable?

I am going to BMW to buy spark plugs today and maybe the OEM vacuum pipe (part 4) if you guys reckon that pipe isn't stock or looks dodgy.

I will add, pipe 4 also felt very soft when squeezing it.

Pipe 5 I reckon I can get something else to replace that hose at much lower price.


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[boost3d]

The braided line is the one that goes to the turbo itself... You should replace them all, and not necessarily with bmw hose. Get a good quality Silicone hose with a sufficient wall.... I would also recommend you check how the hose is routed and avoid any possible hot spots where the hose could get damaged

 

[corp]

Thanks.

Hose 3 seems brand new when I checked. Only 4 and 5 are suspicious to me.

I ordered a new 4 from BMW. I will get a different hose somewhere to replace 5.


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[boost3d]

You can't physically examine, you need to pull one end of the pipe off and apply pressure either with a syringe or by sucking on the pipe to check if it keeps vacuum.

 

[corp]

You can't physically examine, you need to pull one end of the pipe off and apply pressure either with a syringe or by sucking on the pipe to check if it keeps vacuum.

Now that just sounds like work :bangdesk:

 

[Danny2]

You can't physically examine, you need to pull one end of the pipe off and apply pressure either with a syringe or by sucking on the pipe to check if it keeps vacuum.

Now that just sounds like work :bangdesk:

Well you gotta do the work if you want to sort out the car.

 

[corp]

Hahaha. I know. Finding the time is the true challenge.

 

[boost3d]

You can't physically examine, you need to pull one end of the pipe off and apply pressure either with a syringe or by sucking on the pipe to check if it keeps vacuum.

Now that just sounds like work :bangdesk:

Wouldnt you rather have the car 'Work'...

I had to install twice, first time around, hose going to my rear turbo was split... You wouldn't know unless you physically removed the line.... Then remember what I mentioned about routing the pipe correctly, I didn't do this and got a nice hole burnt into the Silicone where it touched the manifold.

 

[corp]

Haha, of course. I just need to find the time to actually buckle down and get cracking on this.

I am expecting that pipe 4 to be damaged like that or nearing such a condition. I do agree that I need to properly inspect. I will definitely keep in mind about the how it is routed.


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[Aaronlaurn]

I dont remember if AWB had this or not, but could one make it such that not only can you see who posted last in a forum, but also what topic that post was in?

What was posted in is more important than who posted it IMO...