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Author Topic: What kills a maf?  (Read 5747 times)

Offline Grand Master Patch

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What kills a maf?
« on: 11 April 2009, 22:08 »
Due to a conversation with a good friend today,the question was raised what kills a maf?

Anyone?
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Offline richw911

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Re: What kills a maf?
« Reply #1 on: 11 April 2009, 22:11 »
Crap aftermarket intakes, Or just wear and tear.

Some people change them every 2 years as a service item.
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Offline jonnyturbo

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Re: What kills a maf?
« Reply #2 on: 11 April 2009, 22:12 »
yup agreed aftermarket ones are rooooobish
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Offline Grand Master Patch

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Re: What kills a maf?
« Reply #3 on: 11 April 2009, 22:24 »
We came to the conclusion that it has nothing to do with what air filter you have.

All 1.8t's have a breather hose at the top of the engine,through this comes oil vapour.This vapour is recirculated back into the intake pipe.What sits right next to this pipe? The Maf.When the dv dumps air back into the intake pipe it's rich in oil vapour,and is passing this vapour back through the maf.Think carbonio woosh

What are your views on this theory?
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Offline richw911

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Re: What kills a maf?
« Reply #4 on: 11 April 2009, 22:27 »
Quote from: Patch on 11 April 2009, 22:24
We came to the conclusion that it has nothing to do with what air filter you have.

All 1.8t's have a breather hose at the top of the engine,through this comes oil vapour.This vapour is recirculated back into the intake pipe.What sits right next to this pipe? The Maf.When the dv dumps air back into the intake pipe it's rich in oil vapour,and is passing this vapour back through the maf.Think carbonio woosh

What are your views on this theory?

Yeah i was thinking more along the lines that some intakes lets loads of crap in which a normal filter would stop  :undecided:
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Offline jonnyturbo

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Re: What kills a maf?
« Reply #5 on: 11 April 2009, 22:28 »
yup i must agree stick with the smoothed box and get a pipercross Air intake in the wing = risk of water suckage lmao SUCKAGE
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Offline Ivor Mk4 Turbo

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Re: What kills a maf?
« Reply #6 on: 11 April 2009, 22:28 »
Quote from: Patch on 11 April 2009, 22:24
We came to the conclusion that it has nothing to do with what air filter you have.

All 1.8t's have a breather hose at the top of the engine,through this comes oil vapour.This vapour is recirculated back into the intake pipe.What sits right next to this pipe? The Maf.When the dv dumps air back into the intake pipe it's rich in oil vapour,and is passing this vapour back through the maf.Think carbonio woosh

What are your views on this theory?


I don't think air/vapour can get pushed back as far as the MAF as the engine is constantly sucking the air in at a greater velocity in the opposite direction??!! :undecided:
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Offline Grand Master Patch

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Re: What kills a maf?
« Reply #7 on: 11 April 2009, 22:30 »
The oil that kills the maf isn't coming from the air filter,it's being blown back through from the other side. :sad:
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Offline jonnyturbo

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Re: What kills a maf?
« Reply #8 on: 11 April 2009, 22:31 »
ah you mean like K n N filters ?
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Offline Grand Master Patch

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Re: What kills a maf?
« Reply #9 on: 11 April 2009, 22:33 »
Quote from: Ivor Mk4 Turbo on 11 April 2009, 22:28
Quote from: Patch on 11 April 2009, 22:24
We came to the conclusion that it has nothing to do with what air filter you have.

All 1.8t's have a breather hose at the top of the engine,through this comes oil vapour.This vapour is recirculated back into the intake pipe.What sits right next to this pipe? The Maf.When the dv dumps air back into the intake pipe it's rich in oil vapour,and is passing this vapour back through the maf.Think carbonio woosh

What are your views on this theory?


I don't think air/vapour can get pushed back as far as the MAF as the engine is constantly sucking the air in at a greater velocity in the opposite direction??!! :undecided:

In reply to that,where is the sound of the dv echoed when running a carbonio? Inside the carbon fibre pipe,this pipe is on the other side of the maf :shocked:

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