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Discussion Starter · #1 ·


I think I broke this off about 2 weeks ago when I was changing my air filter. This is a tube coming off the engine valve assembly somewhere, connecting to the pipe running from my airbox to the turbo.

What did this even do? If I broke it a long time ago, why isn't my engine throwing codes or acting strange or something?

What is it, how do I get a new one and do I have to replace the entire airbox? Thanks!
 

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Sadly this is not uncommon. There are threads going back at least five years addressing this. Either a ney box top or use metal repair epoxy which appears to work well.
 

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DDMWORKS sells this hose w/pipe no more
brake off of this pipe.
This is very common.
Vent the valve cover.
Put in a OCC.
LLLFLY
 

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I'd go with the aftermarket one and be done with it. However, if it were me, I'd probably drill it out and install a threaded valve stem in it's place and plug the hose back in. however, that's only if they are the same size. looks close though. sorry but that's what you get for sending me all this rain today.
 

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Discussion Starter · #8 ·
I'd go with the aftermarket one and be done with it. However, if it were me, I'd probably drill it out and install a threaded valve stem in it's place and plug the hose back in. however, that's only if they are the same size. looks close though. sorry but that's what you get for sending me all this rain today.
Haha, sorry about the rain, but thanks.

I'm gonna grab the DDM tube, but I wish someone knew/would let me know if its potentially causing damage to drive with this hose disconnected.
 

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Sorry bro, I have no idea what the hell it does. If you aren't getting a code, I'd be less concerned but I'd tape up both ends just to be sure no debris gets in there. have you started the car and stuck your finger over the ends to see if you have pressure or suction there? may just be a sensor. does your boost gauge work?
 

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Discussion Starter · #10 ·
Sorry bro, I have no idea what the hell it does. If you aren't getting a code, I'd be less concerned but I'd tape up both ends just to be sure no debris gets in there. have you started the car and stuck your finger over the ends to see if you have pressure or suction there? may just be a sensor. does your boost gauge work?
Based on what others have said, its an air intake for the valve assembly. Good idea about taping the ends.

I am getting a code but the code is related to the cat. I changed my air filter 2 weeks ago, so I'm guessing I did it then, with no code resulting.

Does anyone know if this may be causing problems?
 

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It's part of the PCV system, has a check valve to prevent air from getting into the camshaft area, and feeds into the intake tract after the MAF. Most don't know if/when it is broken and it usually won't result in any codes.

There are lots of threads here and there on the forum about breaking it and repairing it versus replacing the big air tube between the air filter and the turbo.

.
 

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I personally like the spent .22 shell fix too but if it were me, I'd want something threaded. good thing is the DDM intake tube is fairly reasonable and this would be a good time to upgrade. Good luck Nathan.
 

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You will be getting unmetered air past the MAF, but only very little. You might get a code but unlikely to cause a problem.
 

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I did away with mine and have braided fuel line and clamps W/ an oil catch can .DDM sells the whole kit.
 

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Discussion Starter · #16 ·
I did away with mine and have braided fuel line and clamps W/ an oil catch can .DDM sells the whole kit.
Can you explain the purpose of an OCC on this line? It seems to take air into the engine, from the intake, bypassing the turbo. I don't understand what an OCC would do here as there is no oil to catch.
 

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Can you explain the purpose of an OCC on this line? It seems to take air into the engine, from the intake, bypassing the turbo. I don't understand what an OCC would do here as there is no oil to catch.
The air is going from the valve/cam region into the intake before the turbo. An OCC on this line will remove any oil before it gets ingested into the intake tract.
 

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Discussion Starter · #18 ·
The air is going from the valve/cam region into the intake before the turbo. An OCC on this line will remove any oil before it gets ingested into the intake tract.
There is an arrow on the line which is labeled FLOW. It is pointing toward the engine from the intake. Are you sure that this indicator is wrong?
 

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Can you explain the purpose of an OCC on this line? It seems to take air into the engine, from the intake, bypassing the turbo. I don't understand what an OCC would do here as there is no oil to catch.
You already asked this. I already answered (link below)... ?? The only reason for an OCC here is if the check valve should fail open.

Again:

 
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