Ditching the OEM intake on a turbo diesel engine

[Superflan]

Originally Posted By: OVERKILL
for the love of God, don't drive it without a filter to "test". You are allowing it to ingest the filth the filter is keeping out!


Just one power run on a clean road, that's all it takes (1 kilometer)

 

[OVERKILL]

Originally Posted By: Superflan
Originally Posted By: OVERKILL
for the love of God, don't drive it without a filter to "test". You are allowing it to ingest the filth the filter is keeping out!


Just one power run on a clean road, that's all it takes (1 kilometer)

You would be surprised what it can pick up in that short run

 

[Yah-Tah-Hey]

Might as well throw your $$ down a rat hole.Stay with the OEM.

 

[Superflan]

Originally Posted By: Yah-Tah-Hey
Might as well throw your $$ down a rat hole.Stay with the OEM.


What about adding a prefilter ? I'm thinking of really going that route

 

[Olas]

Originally Posted By: Superflan
Originally Posted By: Olas
If you insist on an aftermarket intake look at ITG who make various different combinations of airflow/filtration in all of their products. http://itgairfilters.com/page/foam-specifications/


What about aFe Power ?


I don't trust them. You can spec dimensions but not airflow/filtration balance

 

[meep]

That stock plumbing is really nice, and is true cold air. Aftermarket will be a step backwards.

 

[Superflan]

Originally Posted By: meep
That stock plumbing is really nice, and is true cold air. Aftermarket will be a step backwards.


What are the purpose of the different small chambers along the tract before the filter? Tone tune?

 

[Superflan]

Originally Posted By: meep

I don't trust them. You can spec dimensions but not airflow/filtration balance


You can choose media, dry or wet. Each is balanced differently

 

[SirTanon]

Originally Posted By: Superflan
Originally Posted By: meep
That stock plumbing is really nice, and is true cold air. Aftermarket will be a step backwards.


What are the purpose of the different small chambers along the tract before the filter? Tone tune?


I'm not an automotive engineer, but if I had to wager a guess, I'd say it's that way to provide a particular velocity/flow rate.

 

[Superflan]

Originally Posted By: SirTanon
Originally Posted By: Superflan
Originally Posted By: meep
That stock plumbing is really nice, and is true cold air. Aftermarket will be a step backwards.


What are the purpose of the different small chambers along the tract before the filter? Tone tune?


I'm not an automotive engineer, but if I had to wager a guess, I'd say it's that way to provide a particular velocity/flow rate.


I'm dubious of this on a turbocharged engine

 

[Silk]

Helmholtz chambers ?

 

[Trav]

Originally Posted By: Silk

That's exactly what it is, a resonance chamber to prevent whistling.

 

[Silk]

Well, they make Helmholtz chambers to suit various frequencies., that's why there can be more than one.

 

[Trav]

The size of those chambers varies also depending on make and model. VW uses some that are much larger, I have also heard them referred to as as a rubens tubes which is incorrect like every water control valve at one time was commonly known as a Ranco valve.

 

[Silk]

Originally Posted By: Trav
The size of those chambers varies also depending on make and model.


The size of those chambers depends on what frequencies they are targeting.

 

[Trav]

Well yeah of course. And that would also be dependent on where the air intake is located.

 

[Superflan]

I had a silicone pipe with 2 angles in my [censored]. Once fitted in place of the OEM duct, the intake drones loudly at certain RPMs. Certainly that's why those chambers are here.