What is the giant black "box" under driver side rear

J. Dub · 07-11-2016, 11:13 AM

Is this an emission box?
Can we remove it?

Cloud9blue · 07-11-2016, 12:10 PM

Quote:

Originally Posted by J. Dub

Is this an emission box?
Can we remove it?

in the trunk?

that's your amp... jesus...

J. Dub · 07-11-2016, 12:19 PM

Quote:

Originally Posted by Cloud9blue

in the trunk?

that's your amp... jesus...

Nope, outside of the car very very close to the rear bumper.

Antetokounmpo · 07-11-2016, 12:25 PM

This box?

X_Drive · 07-11-2016, 05:29 PM

Driver's rear? Or passenger side? If it's the black plastic box looking thing under the splash shield, at the passenger side rear, then that would be your charcoal filter canister. I wouldn't recommend removing that as you will get a check engine light. The DMTL pump also lives on that as well. The plastic box closer to the middle of the vehicle is the bottom of the trunk compartment storage well.

J. Dub · 07-11-2016, 07:35 PM

@heeltoe, it's this box. This box before HAD a rubber black hose coming out of it and was for my exhaust flapper. But I don't have stock exhaust anymore.

GATORB8 · 07-11-2016, 09:01 PM

Looks like x_drive got it, Charcoal Canister:
http://www.realoem.com/bmw/enUS/show...19#16137163596

J. Dub · 07-11-2016, 09:06 PM

Quote:

Originally Posted by GATORB8

Looks like x_drive got it, Charcoal Canister:
http://www.realoem.com/bmw/enUS/show...19#16137163596

But mine is on the driver side. He said passenger side. And what the fuck is the charcoal can? Why do we need it?

GATORB8 · 07-11-2016, 09:08 PM

Quote:

Originally Posted by J. Dub

But mine is on the driver side. He said passenger side. And what the fuck is the charcoal can? Why do we need it?

Looks like a fuel vapor filter. May be in a different spot in the E92s.

J. Dub · 07-11-2016, 09:17 PM

Quote:

Originally Posted by GATORB8

Looks like a fuel vapor filter. May be in a different spot in the E92s.

Interesting find. Thank you

X_Drive · 07-11-2016, 09:44 PM

Quote:

Originally Posted by J. Dub

But mine is on the driver side. He said passenger side. And what the fuck is the charcoal can? Why do we need it?

Haha, love the reaction!

The charcoal canister is what GARTOB8 said, a vapor filter.
It's an emissions device that helps vehicles emit less hydrocarbons from fuel.
Basically there is a brick of activated charcoal inside that holds vapors until the system allows it to purge the vapors into the combustion chamber.

Unfortunately, this is a fairly essential component in the tank venting system and will throw codes. Also, in some states, I have heard that it is illegal to "modify," or delete emissions components. Not too sure which ones, as I am not a resident in the southern 50.

So If I have to tell you keep it or trash it, I'd have to go with keep it.

J. Dub · 07-11-2016, 10:12 PM

Quote:

Originally Posted by X_Drive

Haha, love the reaction!

The charcoal canister is what GARTOB8 said, a vapor filter.
It's an emissions device that helps vehicles emit less hydrocarbons from fuel.
Basically there is a brick of activated charcoal inside that holds vapors until the system allows it to purge the vapors into the combustion chamber.

Unfortunately, this is a fairly essential component in the tank venting system and will throw codes. Also, in some states, I have heard that it is illegal to "modify," or delete emissions components. Not too sure which ones, as I am not a resident in the southern 50.

So If I have to tell you keep it or trash it, I'd have to go with keep it.

Interesting. I've never seen this on any of my vehicles I've owned. Thank you for the info

Cory S · 07-11-2016, 10:37 PM

Quote:

Originally Posted by J. Dub

Interesting. I've never seen this on any of my vehicles I've owned. Thank you for the info

They are there.

J. Dub · 07-12-2016, 12:19 AM

My thing is what purpose does it serve if we're running e85 maps with PI?

floydarogers · 07-12-2016, 09:19 AM

Quote:

Originally Posted by J. Dub

My thing is what purpose does it serve if we're running e85 maps with PI?

You still have a fuel tank, don't you? You still have vapor in the fuel tank, don't you? Your fuel system is un-modified (up to the pump), isn't it?

It has nothing to do with the engine operation.

J. Dub · 07-12-2016, 10:35 AM

Quote:

Originally Posted by floydarogers

You still have a fuel tank, don't you? You still have vapor in the fuel tank, don't you? Your fuel system is un-modified (up to the pump), isn't it?

It has nothing to do with the engine operation.

Touche.

Kevinl · 07-12-2016, 05:01 PM

Alot of cars had it under the hood instead

It is a harmless piece of emmissions equipment that does not hurt performance at all
Only benefit to remove it would be weight savings and that is not worth it and you would have the task into make everything work correctly with the fuel tank without it and you would have a permanent check engine light

07-11-2016, 11:13 AM	#1
J. Dub Bob Saget 355 Rep 2,229 Posts Drives: 2010 335i e92 N54 A/T Join Date: Jun 2010 Location: AR - 501 iTrader: (15)	What is the giant black "box" under driver side rear Is this an emission box? Can we remove it? __________________ In memory of Robert E. Flynn (AR)
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07-11-2016, 12:25 PM	#4
Antetokounmpo Brigadier General 1552 Rep 3,475 Posts Drives: E90 6MT FBO; '18 F150 Platinum Join Date: Jul 2013 Location: WI iTrader: (3) Garage List 2018 Ford F-150 Pla ... [0.00] 2008 BMW 335xi [0.00]	This box? __________________ 2008 335xi 6MT \| VRSF Catless DP \| VRSF 7" FMIC \| VRSF CP \| TIAL BOV \| DCI \| MHD 2+ BC Racing BR \| Stoptech 600 \| Firehawk Indy 500 255 Square \| Atric Altimax 225 Sq. 2018 F-150 Platinum 701A \| FX4 \| 3.5 EcoBeast
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07-11-2016, 05:29 PM	#5
X_Drive Second Lieutenant 8 Rep 263 Posts Drives: E46, E91, F21 Join Date: Apr 2014 Location: Northwest iTrader: (0) Garage List 2017 M140i LCI [0.00] 2005 E46 325xi [0.00] 2011 E91 328i xDriv ... [0.00]	Driver's rear? Or passenger side? If it's the black plastic box looking thing under the splash shield, at the passenger side rear, then that would be your charcoal filter canister. I wouldn't recommend removing that as you will get a check engine light. The DMTL pump also lives on that as well. The plastic box closer to the middle of the vehicle is the bottom of the trunk compartment storage well.
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07-11-2016, 07:35 PM	#6
J. Dub Bob Saget 355 Rep 2,229 Posts Drives: 2010 335i e92 N54 A/T Join Date: Jun 2010 Location: AR - 501 iTrader: (15)	@heeltoe, it's this box. This box before HAD a rubber black hose coming out of it and was for my exhaust flapper. But I don't have stock exhaust anymore. __________________ In memory of Robert E. Flynn (AR)
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07-11-2016, 09:01 PM	#7
GATORB8 Captain 225 Rep 807 Posts Drives: 2011 335is 6MT Join Date: Jan 2016 Location: Chicago iTrader: (0) Garage List 2011 BMW 335is [9.50]	Looks like x_drive got it, Charcoal Canister: http://www.realoem.com/bmw/enUS/show...19#16137163596
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07-12-2016, 12:19 AM	#14
J. Dub Bob Saget 355 Rep 2,229 Posts Drives: 2010 335i e92 N54 A/T Join Date: Jun 2010 Location: AR - 501 iTrader: (15)	My thing is what purpose does it serve if we're running e85 maps with PI?
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07-12-2016, 05:01 PM	#17
Kevinl Lieutenant 210 Rep 563 Posts Drives: 2017 BMW M3 Alpine White 6MT Join Date: Aug 2014 Location: Phoenix iTrader: (0)	Alot of cars had it under the hood instead It is a harmless piece of emmissions equipment that does not hurt performance at all Only benefit to remove it would be weight savings and that is not worth it and you would have the task into make everything work correctly with the fuel tank without it and you would have a permanent check engine light
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