What is this?

hawkm3 · 11-05-2014, 10:31 PM

Hey guys so I was doing an engine detail today and came upon this? Never seen this part before and can't find anything on it? Its connected off of the charge pipe and seems to vent out. What is it and what is its purpose, thanks!

darkrom · 11-06-2014, 07:38 AM

Sound reducing turbulence creating POS.

Dackelone · 11-06-2014, 07:45 AM

Sound generator

http://www.realoem.com/bmw/showparts...=13&fg=20&hl=1

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Stvee · 11-06-2014, 07:59 AM

If you're upgrading your charge pipe, you don't need it if that's what you're getting at.

hawkm3 · 11-06-2014, 08:04 AM

Thanks guys! And I'm planning on it Stvee, is that why our diverter valves are so quite?

Stvee · 11-06-2014, 08:24 AM

Quote:

Originally Posted by Ralph1M

Thanks guys! And I'm planning on it Stvee, is that why our diverter valves are so quite?

No, they're just quiet because they are recirculated back into the intake. If you unhook them from the intake and block off the holes where they were going into the intake, they'll be fairly loud.

On certain cars, you shouldn't do this, but since you have an N54 it's OK. Our motors use a MAP sensor rather than a MAF sensor. On cars with a MAF sensor, letting the diverter valves vent to the atmosphere would cause it to run rich since you are releasing air that has already been metered.

hawkm3 · 11-06-2014, 05:30 PM

I know all about this, I already run vent to atmosphere lol I know these cars are speed density, unlike my evo which I had to tune to

11-05-2014, 10:31 PM	#1
hawkm3 Lieutenant 57 Rep 477 Posts Drives: 2009 135i Join Date: Jun 2014 Location: Central Cali iTrader: (4)	What is this? Hey guys so I was doing an engine detail today and came upon this? Never seen this part before and can't find anything on it? Its connected off of the charge pipe and seems to vent out. What is it and what is its purpose, thanks! Attached Images __________________ FBO 09 135i Space Grey Metallic ///M Sport/Premium Package JB4 40% E85 / BMS Intakes / VRSF FMIC / Berk Resonated Midpipes / Custom Muffler Delete / N54 tuning downpipes / VMR v710 Wheels
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11-06-2014, 07:38 AM	#2
darkrom Colonel 213 Rep 2,300 Posts Drives: 135i Join Date: Feb 2011 Location: Rhode Island iTrader: (5)	Sound reducing turbulence creating POS.
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11-06-2014, 07:45 AM	#3
Dackelone European Editor 10759 Rep 22,992 Posts Drives: N54 e82 Join Date: Feb 2010 Location: Bayern, Germany iTrader: (1)	Sound generator http://www.realoem.com/bmw/showparts...=13&fg=20&hl=1 __________________ Dackel's European Delivery Museum Guide
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11-06-2014, 07:59 AM	#4
Stvee Private First Class 22 Rep 157 Posts Drives: 2010 BMW 135i Join Date: Apr 2014 Location: Harrisonburg, VA iTrader: (2)	If you're upgrading your charge pipe, you don't need it if that's what you're getting at.
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11-06-2014, 08:04 AM	#5
hawkm3 Lieutenant 57 Rep 477 Posts Drives: 2009 135i Join Date: Jun 2014 Location: Central Cali iTrader: (4)	Thanks guys! And I'm planning on it Stvee, is that why our diverter valves are so quite?
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11-06-2014, 05:30 PM	#7
hawkm3 Lieutenant 57 Rep 477 Posts Drives: 2009 135i Join Date: Jun 2014 Location: Central Cali iTrader: (4)	I know all about this, I already run vent to atmosphere lol I know these cars are speed density, unlike my evo which I had to tune to
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