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      01-09-2013, 05:18 PM   #23
singularity
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That's a factory defect which BMW said could have a bad effect on performance. The problem of a 'whistle' sound when under throttle also disappeared after this got fixed. I've mentioned it several times already, but nobody read it it seems.

You guys should all take your cars to your service and have those holes covered with the replacement from BMW.

Why those holes were made in the first place and why exactly it was a recall is beyond me.
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      01-09-2013, 06:39 PM   #24
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Just checked mine, I have those plates on both boxes...
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      01-09-2013, 06:54 PM   #25
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Is there a way to check without removing them? I plugged my VIN into the recall website, but shows nothing for my car.
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      01-09-2013, 10:34 PM   #26
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Quote:
Originally Posted by singularity View Post
That's a factory defect which BMW said could have a bad effect on performance. The problem of a 'whistle' sound when under throttle also disappeared after this got fixed. I've mentioned it several times already, but nobody read it it seems.

You guys should all take your cars to your service and have those holes covered with the replacement from BMW.

Why those holes were made in the first place and why exactly it was a recall is beyond me.
I've been hearing the 'whistle' sound but thought it's normal. Will check mine & talk to bmw when i have 1st service 2 weeks later.

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Originally Posted by Rob///M5 View Post
Is there a way to check without removing them?
+1
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      01-09-2013, 11:21 PM   #27
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You don't have to remove the whole box, just the top as if cleaning or replacing the filter. 6-7 torx screws, lift the filter and you can see inside.
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      01-09-2013, 11:49 PM   #28
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Quote:
Originally Posted by Warehouser
You don't have to remove the whole box, just the top as if cleaning or replacing the filter. 6-7 torx screws, lift the filter and you can see inside.
How do you get to that back corner screw ??? The angle looks too tight ?
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      01-10-2013, 02:13 AM   #29
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Quote:
Originally Posted by Fly M5 View Post
This is my opinion only. My production date was 7/12/12 and was not part of the recall. I believe mine was the first few batches that came in along with member MasterDank.
I have checked with my friends that have taken delivery in the last few months and
they all have the plate..so far 3 different cars.
That intrigues me.... Ill check my fathers M6 and friends M5 that are both months newer then mine.


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      01-10-2013, 08:02 AM   #30
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My production date was after the oil pump recall. I'll check mine this weekend and post up.

I'm wondering though. Assuming the holes were engineered into the original production they must have served a purpose that later was determined less desirable than the purpose and expense of installing block off plates. Do you think a performance engineer designed the holes to ensure sufficient air volume at WOT but later a sound engineer determined the whistle was undesirable and BMW decided that customers would complain about the noise in every day driving while not noticing a slight decrease in performance at WOT?
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      01-10-2013, 08:11 AM   #31
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^ that's a very good point
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      01-10-2013, 08:47 AM   #32
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Quote:
Originally Posted by Charlie Brown View Post
My production date was after the oil pump recall. I'll check mine this weekend and post up.

I'm wondering though. Assuming the holes were engineered into the original production they must have served a purpose that later was determined less desirable than the purpose and expense of installing block off plates. Do you think a performance engineer designed the holes to ensure sufficient air volume at WOT but later a sound engineer determined the whistle was undesirable and BMW decided that customers would complain about the noise in every day driving while not noticing a slight decrease in performance at WOT?
interesting theory????
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      01-10-2013, 08:55 AM   #33
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So how do we know definitively if they should or shouldnt be there?
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      01-10-2013, 08:59 AM   #34
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I will check my M6 airbox's as well and report back.
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      01-12-2013, 05:30 PM   #35
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I have the plates blocking the holes.
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      01-12-2013, 06:08 PM   #36
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the only thing that will affect performance is hot air. More air/cooler air/ram air is always the goal of any intake. An open hole on the bottle of an airbox given that it is away from the engine is actually better for performance. The only draw back for something like that might be heavy rain or whistling but you guys are debating over something not very important..
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      01-14-2013, 11:11 AM   #37
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Quote:
Originally Posted by singularity View Post
That's a factory defect which BMW said could have a bad effect on performance. The problem of a 'whistle' sound when under throttle also disappeared after this got fixed. I've mentioned it several times already, but nobody read it it seems.

You guys should all take your cars to your service and have those holes covered with the replacement from BMW.

Why those holes were made in the first place and why exactly it was a recall is beyond me.
There is no recall in the US. Did you notice any performance change after you closed the holes?
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      01-14-2013, 04:54 PM   #38
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Still waiting to hear back from dealer
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      01-16-2013, 02:24 PM   #39
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Quote:
Originally Posted by SANguru View Post
the only thing that will affect performance is hot air. More air/cooler air/ram air is always the goal of any intake. An open hole on the bottle of an airbox given that it is away from the engine is actually better for performance. The only draw back for something like that might be heavy rain or whistling but you guys are debating over something not very important..
Surely it can't be completely trivial? If it was then why would BMW go to the expense of changing the design?
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      01-28-2013, 10:55 AM   #40
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Quote:
Originally Posted by singularity
That's a factory defect which BMW said could have a bad effect on performance. The problem of a 'whistle' sound when under throttle also disappeared after this got fixed. I've mentioned it several times already, but nobody read it it seems.

You guys should all take your cars to your service and have those holes covered with the replacement from BMW.

Why those holes were made in the first place and why exactly it was a recall is beyond me.
Had BMW check on this during my 1st service today. Mine had open holes at the bottom, & they said it's supposed to be like that, meaning they're not gonna do anything about it.
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      01-28-2013, 04:32 PM   #41
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quote from my dealer: . He said the answer he got from Germany is that this is a running production change and that there is no positive or negative effect on the way the car runs. They reassured me that no difference should be felt between a car with it and a car with out.
He also said the block off plate parts are available and will let me know when they arrive.
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      01-28-2013, 04:35 PM   #42
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I'm going to dyno my car before and after just for to see the results.
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      01-28-2013, 05:07 PM   #43
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Just opened mine up, and the plates are there. Mine is 2013, Week 35 build. Were the EARLY build cars the only ones without plates?

Here is another question. The E60 had charcoal filters. I was interested in seeing if the F10 did as well. Sure enough, this car has them. Us E60 guys all removed our charcoal filters on the upper half of the airbox. Pain in the butt, on the F10 they are WAY easier to remove (just snap out). With the E60, if I remember correctly, only the North American cars had them. Can any of the european members confirm/deny that they have the charcoal filters?

Thinking about taking them out and going for a couple quick spins. Shouldn't cause any issues, as all we are doing is removing another restriction. Anyone else do this?
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      01-28-2013, 10:55 PM   #44
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Quote:
Originally Posted by Fly M5 View Post
quote from my dealer: . He said the answer he got from Germany is that this is a running production change and that there is no positive or negative effect on the way the car runs. They reassured me that no difference should be felt between a car with it and a car with out.
He also said the block off plate parts are available and will let me know when they arrive.
Pls share the parts number for the block off plate if available. Want to check it with the local dealer here.

Quote:
Originally Posted by Fly M5 View Post
I'm going to dyno my car before and after just for to see the results.
Interested to know the result.
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