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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > BMS Cabin Filter



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      05-05-2016, 08:36 PM   #1
jwebb335xi
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BMS Cabin Filter

Hey guys,

It seems i've been under the hood of my car every week as of late. I can't stand that it takes 10 to 15 minutes to remove cabin filter, cowl, ECU and Master Cylinder covers just to get to the engine cover. I need new cabin filters (not changed in about 3 years), so I was thinking about the BMS cabin filters, which would save a few minutes time when working under the hood.

(1) do they pose a problem in rainy environments, car washes, etc...?

(2) do they really save much time?

(3) is their a "cowl delete" option that would allow for ECU and Master Cylinder protection, but quick access to the engine cover, etc...?

Thanks for your thoughts?
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      05-05-2016, 08:43 PM   #2
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Quote:
Originally Posted by jwebb335xi View Post
Hey guys,

It seems i've been under the hood of my car every week as of late. I can't stand that it takes 10 to 15 minutes to remove cabin filter, cowl, ECU and Master Cylinder covers just to get to the engine cover. I need new cabin filters (not changed in about 3 years), so I was thinking about the BMS cabin filters, which would save a few minutes time when working under the hood.

(1) do they pose a problem in rainy environments, car washes, etc...?

(2) do they really save much time?

(3) is their a "cowl delete" option that would allow for ECU and Master Cylinder protection, but quick access to the engine cover, etc...?

Thanks for your thoughts?
M3 Cowl: http://www.e90post.com/forums/showthread.php?t=228781
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      05-05-2016, 09:25 PM   #3
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Quote:
Originally Posted by jwebb335xi View Post
Hey guys,

It seems i've been under the hood of my car every week as of late. I can't stand that it takes 10 to 15 minutes to remove cabin filter, cowl, ECU and Master Cylinder covers just to get to the engine cover. I need new cabin filters (not changed in about 3 years), so I was thinking about the BMS cabin filters, which would save a few minutes time when working under the hood.

(1) do they pose a problem in rainy environments, car washes, etc...?

(2) do they really save much time?

(3) is their a "cowl delete" option that would allow for ECU and Master Cylinder protection, but quick access to the engine cover, etc...?

Thanks for your thoughts?
1. Never had an issue
2. Yes....however much time it's taking you to remove all that
3. M3 cowl
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      05-05-2016, 09:37 PM   #4
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Quote:
Originally Posted by jwebb335xi View Post
Hey guys,

It seems i've been under the hood of my car every week as of late. I can't stand that it takes 10 to 15 minutes to remove cabin filter, cowl, ECU and Master Cylinder covers just to get to the engine cover. I need new cabin filters (not changed in about 3 years), so I was thinking about the BMS cabin filters, which would save a few minutes time when working under the hood.

(1) do they pose a problem in rainy environments, car washes, etc...?

(2) do they really save much time?

(3) is their a "cowl delete" option that would allow for ECU and Master Cylinder protection, but quick access to the engine cover, etc...?

Thanks for your thoughts?
I just leave the 2 back screws off the engine cover so it can easily be removed without taking the cowl off. I personally can't stand the engine noise with the cowl removed when driving.
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      05-05-2016, 09:47 PM   #5
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Other then the cover that covers the injectors spark plugs area I leave the rest off while I was in the middle of doing some upgrades and maintenance I left my ECu box uncovered made a big mistake and rinsed off my car and filled my ECU with water luckily I was able to open it up dry it out everything was fine but if you're ECU box is covered and is secure there are no issues
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      05-21-2016, 10:31 AM   #6
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Hi All,

Rather than start a new thread I thought I'd ask my question here. hope the OP doesn’t mind.

Just went to fit my BMS Cowl Filters and I noticed that on my 335i the driver’s side has a sensor which as per the BMS instructions say can be cable tied someone else once the cowl has been removed, however the passenger side doesn’t have another sensor but instead has a push switch which I guess tells the car when the bonnet is open or closed. Maybe part of the alarm anyway I can’t just cable tie that anywhere else it needs to be in the right place to allow the bonnet to push the switch when it closed... so where has everyone else placed that switch when they fit these filters and remove the cowl as the main mounting for that switch is moulded on the cowl on my car?

Thanks
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      05-21-2016, 08:05 PM   #7
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      05-23-2016, 03:54 AM   #8
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More fogging when it rains. Of course my a/c seals need to be replaced & it needs to be refilled. However, back to factory cowl and it's not even an issue any longer. 1-5% of what it was. Very rare.
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