Stock Air Box mod ?

Dymag · 10-18-2008, 08:50 PM

Has anyone removed the second filter within the stock airbox that sits behind the removable air filter ?

Other than the need to replace the air filter more frequently, can anyone think of a negative to removing this added restriction to air flow ?

dvpouldar26 · 10-18-2008, 09:01 PM

That filter is called the charcoal filter. To remove it, you have to cut it out, grind down the excess, and thuroughly clean your airbox from the dust from the grinding. There are no negative effects because the purpose of this filter is only for emissions purposes. It filters out fumes that go in your intake. The only downside to this is that it isn't reversible.

Zanza · 10-18-2008, 09:58 PM

Aside from a possibly different sound, I doubt there would be any benefits. If you do it, however, make sure you post back about it.

dvpouldar26 · 10-18-2008, 10:19 PM

Those who have done the mod say that throttle response increases and the lag in the low rpm's disappears.

Dymag · 10-18-2008, 11:14 PM

My plan is to add a K&N filter and swoop scoops. Seems to be a logical step to remove this additional filter.

wig · 10-19-2008, 08:28 AM

I done this mod 1 month after receiving my E90 and it made a
difference in the hesitation felt at low RPM!

Wig

Richwm · 10-19-2008, 08:33 AM

I did mine a long time ago with no negative effects. I had better throttle response and a slight increase in gas milage.

pittyinSC · 10-19-2008, 01:48 PM

DO IT!!

It really does make a difference

FotiosF90M5 · 10-19-2008, 07:18 PM

Quote:

Originally Posted by Dymag

My plan is to add a K&N filter and swoop scoops. Seems to be a logical step to remove this additional filter.

buy my bmc filter for 40 bucks. much better than a k&n and pretty much brand new. PM me if your interested. I dont remember seeing the charcoal filter. Im going to take another look. I know people with their m5's take them out. they have 2 of them.

UdubBadger · 10-19-2008, 11:44 PM

best idea is the buy a 2nd one to modify and just swap with the one in your car... incase you ever need it for emissions testing or if you sell the car.

check out tischer... saw them on there for like $25 or something.

UdubBadger · 10-20-2008, 12:02 AM

under $30

part #10
http://www.mileoneparts.com/partloca...layCatalogid=0

Alpine · 10-20-2008, 01:20 PM

Do a quick search for the DIY its around here somewhere. I did mine quite a while ago. Slightly better throttle response. This paired with the intake silencer delete makes the car growl at idle. - Yeah, I know it's not an aftermarket system, but it still sounds good for 'stock'.

Dymag · 10-20-2008, 01:59 PM

What is the "intake silencer delete" ?

UdubBadger · 10-20-2008, 03:05 PM

removal of the charcoal filter between the air box and throttle body

Richwm · 10-20-2008, 07:07 PM

Quote:

Originally Posted by UdubBadger

best idea is the buy a 2nd one to modify and just swap with the one in your car... incase you ever need it for emissions testing or if you sell the car.

check out tischer... saw them on there for like $25 or something.

That is just the intake hose, the filter is part of the Air cleaner assy IE the air box and its $406.42.
read this thread http://www.e90post.com/forums/showthread.php?t=12338 for more info.

Richwm · 10-20-2008, 07:12 PM

Quote:

Originally Posted by Dymag

What is the "intake silencer delete" ?

Its removing the intake resonator I added a arrow to the picture below. It just cut down on the drone coming from the intake.

UdubBadger · 10-20-2008, 07:59 PM

you sure cuz the part circled and labeled #10 is $29 bucks which looks like it includes the charcoal filter.

I'm gonna PM Evan@Tischer and ask him.

Richwm · 10-20-2008, 09:49 PM

Quote:

Originally Posted by UdubBadger

you sure cuz the part circled and labeled #10 is $29 bucks which looks like it includes the charcoal filter.

I'm gonna PM Evan@Tischer and ask him.

The filter is glued/bonded to the MAF sensor side of the air box I am sure because I cut mine out a while ago!

UdubBadger · 10-20-2008, 11:06 PM

Right i understand that and I believe you of where its located... however I'm saying I don't think its labeled as the part/price that you think it is which is why I'm asking Evan. I'm pretty sure the filter is included with that tube, all boxed in as #10 on the diagram. We'll know by tomorrow.

TommyK · 10-21-2008, 03:06 AM

ya that filter just cuts down on the engine noise. if you take the filter box out and put in an aftermarket intake you can here the difference obviously. think of thay extra filter being a second muffler inside the intake compartment to cut down the direct flow of air to the throtal body. removing it will just give you a more direct flow. that might give you 2HP at most i would think since a intake sytem will give you about 7hp. i dont know what that would do for you warrenty either. for cutting somthing off. buy yes when i took out my stock intake and put my AFE in i was that peice and was thinking about what a pointless part it was taking the sportyness away from a sporty car.

asifjahmed · 10-21-2008, 08:46 AM

Quote:

Originally Posted by UdubBadger

Right i understand that and I believe you of where its located... however I'm saying I don't think its labeled as the part/price that you think it is which is why I'm asking Evan. I'm pretty sure the filter is included with that tube, all boxed in as #10 on the diagram. We'll know by tomorrow.

The filter is NOT included in the "#10". The filter we are referring to in this thread is the charcoal filter. It is just as big as your normal air filter, and is glued in right by the air filter on the side of the airbox with the MAF sensor on it.

You need to take out the airbox, unscrew the torx screws, remove the air filter and MAF sensor, and then cut out the black charcoal filter with a utility knife. I then took a sandblock and got every last bit off. Then shop-vac it to get all of the black powdery residue off and put it all back together.

OEKlM · 10-21-2008, 09:21 AM

Quote:

Originally Posted by asifjahmed

The filter is NOT included in the "#10". The filter we are referring to in this thread is the charcoal filter. It is just as big as your normal air filter, and is glued in right by the air filter on the side of the airbox with the MAF sensor on it.

You need to take out the airbox, unscrew the torx screws, remove the air filter and MAF sensor, and then cut out the black charcoal filter with a utility knife. I then took a sandblock and got every last bit off. Then shop-vac it to get all of the black powdery residue off and put it all back together.

thanks for clearing that up. I think they may have been referring to the intake silencer though. =)

10-18-2008, 08:50 PM	#1
Dymag NC BMW 42 Rep 461 Posts Drives: 2013 335is , 6 speed mt Join Date: Aug 2007 Location: NC iTrader: (7) Garage List 2013 BMW 335is [8.00]	Stock Air Box mod ? Has anyone removed the second filter within the stock airbox that sits behind the removable air filter ? Other than the need to replace the air filter more frequently, can anyone think of a negative to removing this added restriction to air flow ? __________________ Cobb AP v3 - Wedge tuned, Cobb FMIC, AR catted DP's, Dinan Stage 2 suspension, Koni Yellows, M3 control arms and strut brace, BMS chargepipe, BMS OCC, BMS Sport Oil Cooler Valve, BMS CDV, RB Turbo PCV, aFe Stage 2 SI intake w/scoops
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10-18-2008, 09:01 PM	#2
dvpouldar26 Major 64 Rep 1,498 Posts Drives: 2008 e92 328i, Porsche 987.1 Join Date: May 2008 Location: Beverly Hills, CA iTrader: (4)	That filter is called the charcoal filter. To remove it, you have to cut it out, grind down the excess, and thuroughly clean your airbox from the dust from the grinding. There are no negative effects because the purpose of this filter is only for emissions purposes. It filters out fumes that go in your intake. The only downside to this is that it isn't reversible.
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10-18-2008, 09:58 PM	#3
Zanza Private First Class 3 Rep 112 Posts Drives: E90 325i Arctic Metallic Join Date: Jun 2008 Location: FL iTrader: (0)	Aside from a possibly different sound, I doubt there would be any benefits. If you do it, however, make sure you post back about it. __________________ gators
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10-18-2008, 10:19 PM	#4
dvpouldar26 Major 64 Rep 1,498 Posts Drives: 2008 e92 328i, Porsche 987.1 Join Date: May 2008 Location: Beverly Hills, CA iTrader: (4)	Those who have done the mod say that throttle response increases and the lag in the low rpm's disappears.
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10-18-2008, 11:14 PM	#5
Dymag NC BMW 42 Rep 461 Posts Drives: 2013 335is , 6 speed mt Join Date: Aug 2007 Location: NC iTrader: (7) Garage List 2013 BMW 335is [8.00]	My plan is to add a K&N filter and swoop scoops. Seems to be a logical step to remove this additional filter. __________________ Cobb AP v3 - Wedge tuned, Cobb FMIC, AR catted DP's, Dinan Stage 2 suspension, Koni Yellows, M3 control arms and strut brace, BMS chargepipe, BMS OCC, BMS Sport Oil Cooler Valve, BMS CDV, RB Turbo PCV, aFe Stage 2 SI intake w/scoops
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10-19-2008, 08:28 AM	#6
wig Private First Class 4 Rep 149 Posts Drives: 328I Join Date: Dec 2007 Location: NM iTrader: (2)	I done this mod 1 month after receiving my E90 and it made a difference in the hesitation felt at low RPM! Wig
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10-19-2008, 08:33 AM	#7
Richwm Captain 65 Rep 920 Posts Drives: 06 E90 330i 6MT, 01 E46 330i Join Date: May 2006 Location: Canyon Country, CA. iTrader: (0) Garage List 2020 Jeep JLU Wrangler [0.00] 2006 (Mar 05 build ... [8.00] 2001 330i [9.00]	I did mine a long time ago with no negative effects. I had better throttle response and a slight increase in gas milage. __________________ Mar 05 Build date,2006 E90 330i, Sport Package, Premium Package, TR MT-1's . V-1 Hard-wired power with custom V-1 Concealment Display . Rear fogs, Rear power outlet's, M short shifter knob, BlackLines, BMW Strut tower bar, CDV Delete, Front M3 wishbones + tension struts, BMW Performance shocks and springs, BMW Performance Brake kit F&R, OEM short shift kit. Rear M3 Guide rods and Wishbones. 2006 E-90 330i with 302,000 miles.
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10-19-2008, 01:48 PM	#8
pittyinSC Drives Smart 54 Rep 2,393 Posts Drives: 1968 Austin Mini Cooper 1380cc Join Date: Jan 2007 Location: Nashville, TN iTrader: (2) Garage List 2006 330i [0.00]	DO IT!! It really does make a difference __________________ 08 BMW ///M5 Space Gray/Black 6 speed Engine: RPi GTS exhaust, RPi Scoops, Carbon Filter Delete Exterior: Glossy Black Kidneys, LUX V3, OEM LED License Plate light, Bruce License Plate Adapter
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10-19-2008, 11:44 PM	#10
UdubBadger Banned 633 Rep 24,685 Posts Drives: '04 330i ZHP Join Date: Dec 2007 Location: Chicago Burbs iTrader: (22) Garage List 2004 BMW 330i ZHP [9.50] 2011 135i [7.46] 2008 328xi [8.76]	best idea is the buy a 2nd one to modify and just swap with the one in your car... incase you ever need it for emissions testing or if you sell the car. check out tischer... saw them on there for like $25 or something.
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10-20-2008, 12:02 AM	#11
UdubBadger Banned 633 Rep 24,685 Posts Drives: '04 330i ZHP Join Date: Dec 2007 Location: Chicago Burbs iTrader: (22) Garage List 2004 BMW 330i ZHP [9.50] 2011 135i [7.46] 2008 328xi [8.76]	under $30 part #10 http://www.mileoneparts.com/partloca...layCatalogid=0
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10-20-2008, 01:20 PM	#12
Alpine Major 47 Rep 1,433 Posts Drives: e90 330i Join Date: Sep 2006 Location: Nashville, TN iTrader: (5) Garage List 2006 330i [0.00]	Do a quick search for the DIY its around here somewhere. I did mine quite a while ago. Slightly better throttle response. This paired with the intake silencer delete makes the car growl at idle. - Yeah, I know it's not an aftermarket system, but it still sounds good for 'stock'. __________________
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10-20-2008, 01:59 PM	#13
Dymag NC BMW 42 Rep 461 Posts Drives: 2013 335is , 6 speed mt Join Date: Aug 2007 Location: NC iTrader: (7) Garage List 2013 BMW 335is [8.00]	intake silencer delete ? What is the "intake silencer delete" ? __________________ Cobb AP v3 - Wedge tuned, Cobb FMIC, AR catted DP's, Dinan Stage 2 suspension, Koni Yellows, M3 control arms and strut brace, BMS chargepipe, BMS OCC, BMS Sport Oil Cooler Valve, BMS CDV, RB Turbo PCV, aFe Stage 2 SI intake w/scoops
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10-20-2008, 03:05 PM	#14
UdubBadger Banned 633 Rep 24,685 Posts Drives: '04 330i ZHP Join Date: Dec 2007 Location: Chicago Burbs iTrader: (22) Garage List 2004 BMW 330i ZHP [9.50] 2011 135i [7.46] 2008 328xi [8.76]	removal of the charcoal filter between the air box and throttle body
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10-20-2008, 07:59 PM	#17
UdubBadger Banned 633 Rep 24,685 Posts Drives: '04 330i ZHP Join Date: Dec 2007 Location: Chicago Burbs iTrader: (22) Garage List 2004 BMW 330i ZHP [9.50] 2011 135i [7.46] 2008 328xi [8.76]	you sure cuz the part circled and labeled #10 is $29 bucks which looks like it includes the charcoal filter. I'm gonna PM Evan@Tischer and ask him.
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10-20-2008, 11:06 PM	#19
UdubBadger Banned 633 Rep 24,685 Posts Drives: '04 330i ZHP Join Date: Dec 2007 Location: Chicago Burbs iTrader: (22) Garage List 2004 BMW 330i ZHP [9.50] 2011 135i [7.46] 2008 328xi [8.76]	Right i understand that and I believe you of where its located... however I'm saying I don't think its labeled as the part/price that you think it is which is why I'm asking Evan. I'm pretty sure the filter is included with that tube, all boxed in as #10 on the diagram. We'll know by tomorrow.
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10-21-2008, 03:06 AM	#20
TommyK Brigadier General 119 Rep 3,325 Posts Drives: E90 335i LCI Join Date: Aug 2008 Location: Orange County, CA iTrader: (9) Garage List 2009 BMW 335i LCI [0.00] 2006 E90 330i [0.00]	ya that filter just cuts down on the engine noise. if you take the filter box out and put in an aftermarket intake you can here the difference obviously. think of thay extra filter being a second muffler inside the intake compartment to cut down the direct flow of air to the throtal body. removing it will just give you a more direct flow. that might give you 2HP at most i would think since a intake sytem will give you about 7hp. i dont know what that would do for you warrenty either. for cutting somthing off. buy yes when i took out my stock intake and put my AFE in i was that peice and was thinking about what a pointless part it was taking the sportyness away from a sporty car.
	Appreciate 0 Quote