Why the MPPK airbox is not an intake

Dog Face Pony Soldier · 02-11-2015, 08:50 AM

Quote:

Originally Posted by Bee Pee

mesh was present but none of it blocked off

Let me try again... A mesh/grill is said to have 50% open area when the mesh material itself takes up half of the opening. If you look at that "intake grill" it is clear that the mesh is extremely restrictive and only allows half as much air to pass through than if there was no grill there at all. Hopefully this image will help you understand the terminology...

POA = Percentage of Open Area

auf Deutsch · 02-11-2015, 10:36 AM

I just ordered an aFe pro dry S drop-in as I too have that ridiculous OEM filter. Thanks, Mike for pointing that out. I never would have seen that.

Bee Pee · 02-11-2015, 10:43 AM

Quote:

Originally Posted by glennQNYC

Hopefully this image will help you understand the terminology... POA = Percentage of Open Area

OK - by comparison to your image, sizing of mesh on part # 15 that I removed and refitted for AFE ram air scoop was somewhere between POA of 62% and 80 %.

G30 B58 · 02-11-2015, 11:25 AM

FWIW, I got silly (cabin fever last month) and drilled 6 x 3/4" holes in my stock airbox. There is a noticeable difference in the sound of the intake at idle.

Not sure what all that mean but it's there. The holes I made ARE being used to some extent.

Dog Face Pony Soldier · 02-11-2015, 01:04 PM

Quote:

Originally Posted by Bee Pee

Quote:

Originally Posted by glennQNYC

Hopefully this image will help you understand the terminology... POA = Percentage of Open Area

[IMG]http://www.bankerwire.com/images/lar...A_MD_Ratio.jpg[/IMG]

OK - by comparison to your image, sizing of mesh on part # 15 that I removed and refitted for AFE ram air scoop was somewhere between POA of 62% and 80 %.

I'll probably pull my bumper cover off this spring to mod that intake grill and remove the label on my ACC sensor. I'll have to revisit this when I can further demonstrate how restrictive the OE engine intake is.

I still have my OE airbox; so I could fire up my OBDLink and try and log A/B measurements between OE and MPPK airboxes. Honestly I doubt I'll be able to generate enough ambition to prove to you guys a larger than OE engine intake enables more air to enter the engine.

smv · 02-12-2015, 02:55 PM

Mine has been retrofitted to MPPK and filter element does not have this extra layer.. P/N: 13 71 7 602 643 . Car is NOT M Sport though.

smv · 02-12-2015, 03:04 PM

... and picture attached.

Mike_L · 02-12-2015, 03:04 PM

That seems to be the difference. M Sport cars have the dual layers, non-M Sports don't. Wonder if the carbon layer adds sound somehow?

Dog Face Pony Soldier · 02-12-2015, 07:08 PM

Quote:

Originally Posted by Mike_L

That seems to be the difference. M Sport cars have the dual layers, non-M Sports don't. Wonder if the carbon layer adds sound somehow?

My M Sport (2/14 production) doesn't have the dual layer.

Mike_L · 02-12-2015, 07:20 PM

Quote:

Originally Posted by glennQNYC

My M Sport (2/14 production) doesn't have the dual layer.

According to the ETK 13717602643 is the number for the Hot Climate Version (S823A), 13718616909 is the number with Cold Climate Version (S842A). Not sure how that works, because I don't have S842A, I have S823A (Hot Climate Version), but do have that filter, as do all F34s.

BigVegas17 · 04-26-2015, 08:56 AM

Quote:

Originally Posted by BigVegas17

Got mine from Amazon.

http://www.amazon.com/33-2997-High-P.../dp/B009774F30

Posted in the Members Classifieds but wanted to add a bump here given all of the targeted discussion on the stock filter v. K&N.

I am selling my K&N, gently used, with <=3000 miles on it. Satisfied with the purchase for sure, but I have the Dinan intake on the way and no longer need the K&N. PM me if interested. $40 shipped OBO.

greekcs · 05-10-2015, 06:44 PM

I have the dual layer filter and ripped off the felt section.

magic77 · 05-11-2015, 01:31 PM

Does anyone have a side by side picture of the airboxes. Just wondering the difference between the two.

Is is the large whole at the front or more to it.

Gio72 · 05-11-2015, 01:57 PM

Exactly only the large red boarded hole in the front side

magic77 · 05-11-2015, 03:00 PM

I think a cole cutter will be used shortly then. Cheaper to by another oem one than I'm sure pay a fortune for a performance one

Fat Panda · 05-11-2015, 04:22 PM

I was just looking at my filter, and I have an M-sport with the dual layer filter. Don't have MPPK installed either.

Dog Face Pony Soldier · 05-25-2015, 12:33 PM

Quote:

Originally Posted by glennQNYC

Quote:

Originally Posted by Bee Pee

Quote:

Originally Posted by glennQNYC

Hopefully this image will help you understand the terminology... POA = Percentage of Open Area

[IMG]http://www.bankerwire.com/images/lar...A_MD_Ratio.jpg" rel="" target="_blank">http://<a href="http://www.bankerwir..._Ratio.jpg</a>" rel="" target="_blank">http://<a href="http://<a href="http...io.jpg</a></a>[/IMG]

OK - by comparison to your image, sizing of mesh on part # 15 that I removed and refitted for AFE ram air scoop was somewhere between POA of 62% and 80 %.

I'll probably pull my bumper cover off this spring to mod that intake grill and remove the label on my ACC sensor. I'll have to revisit this when I can further demonstrate how restrictive the OE engine intake is.

I still have my OE airbox; so I could fire up my OBDLink and try and log A/B measurements between OE and MPPK airboxes. Honestly I doubt I'll be able to generate enough ambition to prove to you guys a larger than OE engine intake enables more air to enter the engine.

Finally got a pic of the Intake Grill.

02-11-2015, 10:36 AM	#46
auf Deutsch Colonel 1913 Rep 2,210 Posts Drives: '17 jackrabbit on crystal meth Join Date: Dec 2013 Location: Philly burbs iTrader: (0) Garage List 2017 BMW M2 [0.00]	I just ordered an aFe pro dry S drop-in as I too have that ridiculous OEM filter. Thanks, Mike for pointing that out. I never would have seen that. __________________ 2017 BSM M2\|6MT\|Exec\|black kidneys and gills\|full alcantara wheel\|CF spoiler\|Dinan Stage 4\|Dinan COI\|Dinan free flow exhaust with resonator delete\|Fabspeed sport cat DP\|BMS clutch stop\|465 bhp\|4.75/5 stars retired: 2014 435xi\|MPPK\|335 bhp\|3/5 stars
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02-11-2015, 11:25 AM	#48
G30 B58 Pace Car Driver 1574 Rep 3,174 Posts Drives: '22 AW G30 B58 M-Sport Join Date: May 2014 Location: my garage in PA iTrader: (0)	FWIW, I got silly (cabin fever last month) and drilled 6 x 3/4" holes in my stock airbox. There is a noticeable difference in the sound of the intake at idle. Not sure what all that mean but it's there. The holes I made ARE being used to some extent.
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02-12-2015, 02:55 PM	#50
smv Private 10 Rep 63 Posts Drives: F48 X1 25D Xdrive Join Date: Nov 2008 Location: Switzerland iTrader: (0)	Mine has been retrofitted to MPPK and filter element does not have this extra layer.. P/N: 13 71 7 602 643 . Car is NOT M Sport though.
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02-12-2015, 03:04 PM	#51
smv Private 10 Rep 63 Posts Drives: F48 X1 25D Xdrive Join Date: Nov 2008 Location: Switzerland iTrader: (0)	... and picture attached. Attached Images
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02-12-2015, 03:04 PM	#52
Mike_L Banned 284 Rep 1,960 Posts Drives: 2015 335xi GT M-Sport MPPK Join Date: Jun 2013 Location: New York City iTrader: (2)	That seems to be the difference. M Sport cars have the dual layers, non-M Sports don't. Wonder if the carbon layer adds sound somehow?
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05-10-2015, 06:44 PM	#56
greekcs Major 781 Rep 1,113 Posts Drives: 2020 M340i xDrive Join Date: Jan 2010 Location: Long Island, NY iTrader: (0)	I have the dual layer filter and ripped off the felt section. __________________ 2003 11/02 Steel Gray Metallic on Red M3 - SMGII - VF570 - SUPERSPRINT - KW - BBS - CSL ROOF SOLD 2015 09/14 Alpine White on Red 435i xDrive MPPK - Expensive black vinyl with special lettering. SOLD 2020 12/19 Mineral Gray Metallic on Black Vinyl interior M340i xDrive
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05-11-2015, 01:31 PM	#57
magic77 Brigadier General 261 Rep 3,815 Posts Drives: ex- 335i Join Date: Apr 2009 Location: Surrey iTrader: (2)	Does anyone have a side by side picture of the airboxes. Just wondering the difference between the two. Is is the large whole at the front or more to it. __________________ F30 335i M Sport - now departed
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05-11-2015, 01:57 PM	#58
Gio72 Captain 58 Rep 682 Posts Drives: G80 M3 Competition Join Date: Sep 2009 Location: Italy-Venice iTrader: (0)	Exactly only the large red boarded hole in the front side __________________ BMW M3 G80 Isle of Man
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05-11-2015, 03:00 PM	#59
magic77 Brigadier General 261 Rep 3,815 Posts Drives: ex- 335i Join Date: Apr 2009 Location: Surrey iTrader: (2)	I think a cole cutter will be used shortly then. Cheaper to by another oem one than I'm sure pay a fortune for a performance one __________________ F30 335i M Sport - now departed
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05-11-2015, 04:22 PM	#60
Fat Panda Private First Class 34 Rep 141 Posts Drives: 14' 435i xDrive M Sport Join Date: Jun 2014 Location: Toronto, ON iTrader: (0)	I was just looking at my filter, and I have an M-sport with the dual layer filter. Don't have MPPK installed either. __________________ 2014 BMW 435i xDrive M-Sport "Elphie" \| Mineral Grey Metallic \| Coral Red Interior \| M Performance Package I \| Premium Package \| ConnectedDrive \| bootmod3 OTS Stage 1 93 Octane Tune \| M Performance Exhaust \| M Performance Stainless Steel Pedal Covers \| Dinan Performance Spring Set \| Dinan Supplemental Ride Quality \| Precision Raceworks N55 Ignition Kit
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