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      10-25-2016, 06:23 AM   #1
BMW Steve
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Bmw Cowl Filters

BMW COWL FILTERS

As it says, cowl filters, any one using them, are they any good.

Before I purchase some.
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      10-25-2016, 06:40 AM   #2
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No experience, but they look like the internals of a K&N air filter - in which case I'm sure they'd work fine.

What put me off going this route is that there appears to be no solution for where to put the two under-bonnet sensors that UK cars have. I think one's for the alarm and one for bonnet closure. When you remove the OEM cowl moulding, you loose the sensor mounting points...
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      10-25-2016, 06:48 AM   #3
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That's exactly what I was wondering. I purchased these ages ago but they are currently still in the package they arrived in as I don't know where to put those two sensors.

If anyone has any ideas please post here thanks.
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      10-25-2016, 08:46 AM   #4
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VERY GOOD POINT

Well Presented, I have thrown the question over to the supplier, just waiting on his reply.
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      10-25-2016, 08:56 AM   #5
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This was discussed a month ago in full depth detail.

http://www.e90post.com/forums/showthread.php?t=1303828
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      10-25-2016, 09:20 AM   #6
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Had them installed for almost 3 years now. The sensors can easily be zip tied.
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      10-25-2016, 09:46 AM   #7
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Quote:
Originally Posted by shadow191 View Post
Had them installed for almost 3 years now. The sensors can easily be zip tied.
That's what I thought,
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      10-25-2016, 10:00 AM   #8
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Quote:
Originally Posted by BMW Steve View Post
That's what I thought,
Once you get them fitted could you let us know how the noise levels are and also water drainage.
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      10-25-2016, 10:23 AM   #9
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Quote:
Originally Posted by shadow191 View Post
Had them installed for almost 3 years now. The sensors can easily be zip tied.
Zip tied to what? Have you actually seen the sensors we're talking about? They include a push button and need a firm, secure base to operate.
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      10-25-2016, 10:47 AM   #10
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Quote:
Originally Posted by Wolf 335 View Post
Once you get them fitted could you let us know how the noise levels are and also water drainage.
Just purchased them so watch this space.
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      10-25-2016, 10:54 AM   #11
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daily driven without the cowl for 5 years now had the cowl filters on ever since they were release (3.5? years ago).. car washes.. florida rain.. northeastern u.s. snow - 0 problems.

tuck the sensors. done.

there will be some additional noise from the engine bay since the cowl isn't there to muffle
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      10-25-2016, 11:11 AM   #12
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Quote:
Originally Posted by Daily Three View Post
daily driven without the cowl for 5 years now had the cowl filters on ever since they were release (3.5? years ago).. car washes.. florida rain.. northeastern u.s. snow - 0 problems.

tuck the sensors. done.

there will be some additional noise from the engine bay since the cowl isn't there to muffle
Where did you tuck in your sensors, got some location picks
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      10-25-2016, 12:12 PM   #13
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Sorry, didn't realize the UK model might be different (googled the sensor and maybe that one could be zip tied to the strut bar). On the US model, there are 2 sensors on the cowl and those can easily be zip tied.

FWIW, it will be louder with the filters installed. You hear the intakes more. I wouldn't worry about water either, been through a lot of rain storms and car washes and no problems. DME box is sealed. One downside is that you basically have to run your AC all the time as the air coming in will be really hot since these filters get air directly from the engine bay. When you're moving it's ok, but if you're idling at a traffic light the incoming air is very warm unless AC is running.

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Originally Posted by Phil325i View Post
Zip tied to what? Have you actually seen the sensors we're talking about? They include a push button and need a firm, secure base to operate.
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      10-26-2016, 01:56 AM   #14
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I have the filters installed (and the forges etc can certainly be heard much more - which I love lol).

No issues with how they work and as for the sensors and drainage, well I sorted this side perfectly by fitting the M3 cowling. Looks completely OE of course and means everything is in place as it should be (without having anything tied out the way etc).

Check out my thread and you should see pics.
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      10-26-2016, 04:13 AM   #15
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Quote:
Originally Posted by RajB View Post
I have the filters installed (and the forges etc can certainly be heard much more - which I love lol).

No issues with how they work and as for the sensors and drainage, well I sorted this side perfectly by fitting the M3 cowling. Looks completely OE of course and means everything is in place as it should be (without having anything tied out the way etc).

Check out my thread and you should see pics.
Hi Raj,,,

I had heard some thing about using the M3 cowling, tried looking for your thread but cant find it. Also is there a part number ?
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      10-26-2016, 05:22 AM   #16
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Quote:
Originally Posted by BMW Steve View Post
Hi Raj,,,

I had heard some thing about using the M3 cowling, tried looking for your thread but cant find it. Also is there a part number ?
Post number 436 in my build thread:

The Build...

And post number 445 gives the part numbers for the cowling too

You do need to extend the sensor wiring to relocate it and I used some washers to lift the bonnet switch to the correct height for it to make contact with the bonnet.

Post number 517 also gives the part numbers for the cable tidy pieces I also used to neaten the whole job.

HTH,

Raj
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      10-26-2016, 05:32 AM   #17
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Quote:
Originally Posted by RajB View Post
Post number 436 in my build thread:

The Build...

And post number 445 gives the part numbers for the cowling too

You do need to extend the sensor wiring to relocate it and I used some washers to lift the bonnet switch to the correct height for it to make contact with the bonnet.

Post number 517 also gives the part numbers for the cable tidy pieces I also used to neaten the whole job.

HTH,

Raj
Thanks, off the read it all now....
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      10-26-2016, 06:05 AM   #18
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so without spending loads more money on M3 cowling where can we move the bonnet senor so that it still operates as if it were still in its original position..?
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      10-26-2016, 06:09 AM   #19
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Quote:
Originally Posted by BMW Steve View Post
Thanks, off the read it all now....
Cool and enjoy lol
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      10-26-2016, 06:16 AM   #20
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Quote:
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so without spending loads more money on M3 cowling where can we move the bonnet senor so that it still operates as if it were still in its original position..?
It sure tbh. Guess you could move it closer to the wing or something but guess it's a bit or trial and error.
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      10-28-2016, 10:45 AM   #21
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Quote:
Originally Posted by RajB View Post
Post number 436 in my build thread:

The Build...

And post number 445 gives the part numbers for the cowling too

You do need to extend the sensor wiring to relocate it and I used some washers to lift the bonnet switch to the correct height for it to make contact with the bonnet.

Post number 517 also gives the part numbers for the cable tidy pieces I also used to neaten the whole job.

HTH,

Raj


Well, all the bits arrived today, Raj, thanks for the part No info, now all I need to do is get it sorted on sunday.
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      10-28-2016, 11:13 AM   #22
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Quote:
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Well, all the bits arrived today, Raj, thanks for the part No info, now all I need to do is get it sorted on sunday.
No worries.

Just realised did you get the 3 bolts required for the cable tidy piece to screw it to the cowling? Can't remember the part numbers.

The cowling reuses the existing screws etc.
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