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Induction Kit MAF Question

Specific discussion about the E89 2009 Z4 (sDrive35is, sDrive35i, sDrive30i, sDrive23i)
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Dru2000D
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Induction Kit MAF Question

Post by Dru2000D » Tue Jan 31, 2023 9:23 pm

Hi guys,

Hope you're all doing grand! Bit chilly for the top down 😂

I've got a quick question regarding induction kits. The MAF sensor sits on the piping of the airbox itself so would have to be detached if replacing for a cone filter kit.

I'm sorry if this is a very newbie one, but how would I go about making sure the MAF is included into the induction kit?

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B21
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Induction Kit MAF Question

Post by B21 » Tue Jan 31, 2023 10:24 pm

Which engine are you talking about ?
We choose to go to on with this endeavour at this time and do the other things, not because they are easy, but because they are hard…
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Dru2000D
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Induction Kit MAF Question

Post by Dru2000D » Thu Feb 02, 2023 5:55 pm

Its the 23i buddy

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Induction Kit MAF Question

Post by B21 » Thu Feb 02, 2023 7:33 pm

You just leave it tied up in the engine bay ..connected..

IMHO you would be better off with just a clean decent paper filter in the stock airbox.. :thumbsup:
We choose to go to on with this endeavour at this time and do the other things, not because they are easy, but because they are hard…
A very modified Atacama Yellow 35is :thumbsup:

Dru2000D
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Induction Kit MAF Question

Post by Dru2000D » Thu Feb 02, 2023 7:37 pm

Thanks for the advice! I suppose I could find a way to "mount" it into the air tube

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Induction Kit MAF Question

Post by Jasonn » Thu Feb 02, 2023 9:52 pm

I think you'd be setting yourself up with more problems.

A few people have looked at doing this and the consensus is that the stock bmw airbox is better than the aftermarket hobbies. The "oil able" K&N panel filters aren't as good as a decent quality paper filter (according to my indy) they either don't filter well enough or end up over oiled.

Cone filters look nicer but the results don't seem to support the swap

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Induction Kit MAF Question

Post by mcbutler » Thu Feb 02, 2023 11:33 pm

B21 wrote: Thu Feb 02, 2023 7:33 pm You just leave it tied up in the engine bay ..connected..

IMHO you would be better off with just a clean decent paper filter in the stock airbox.. :thumbsup:
Agreed, very little if anything to gain from most so called 'sports filters'..
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mcbutler
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Induction Kit MAF Question

Post by mcbutler » Thu Feb 02, 2023 11:34 pm

Jasonn wrote: Thu Feb 02, 2023 9:52 pm I think you'd be setting yourself up with more problems.

A few people have looked at doing this and the consensus is that the stock bmw airbox is better than the aftermarket hobbies. The "oil able" K&N panel filters aren't as good as a decent quality paper filter (according to my indy) they either don't filter well enough or end up over oiled.

Cone filters look nicer but the results don't seem to support the swap
They also draw warmer (less dense) air from the engine bay as opposed from external air via the original ducting
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Mr Ward
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Induction Kit MAF Question

Post by Mr Ward » Fri Feb 03, 2023 11:00 am

I run an inline cone filter with the MAF inline also. The inline cone filter is fed cold air from 2 x 2.5 inch air intakes in the main bumper which feed the inline cone via a 3 inch stainless steel pipe running in front of the radiator across the top. I did research cone filters and i agree with most that the normal air setup is more than adequate for most z's however my Z is a bit on the extreme side of things.
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