Metal piece inside the exhaust........

Euro_E93 · 09-01-2009, 05:06 PM

Hi, there's a round piece of metal inside the left exhaust pipe. Is this normal?

xsb00st · 09-01-2009, 05:12 PM

Yes, it's normal. It's a flap that closes during cold starts... I believe, to help warm up your cats. Use search to find out more info on it... as well as ways to keep it open when you start your engine (ex. golf tee mod).

longtran · 09-01-2009, 05:12 PM

its a valve. it controls the sound of the exhaust. it opens and closes. yes it is normal

deletedelete · 09-01-2009, 05:12 PM

lol, yup its fine.

Euro_E93 · 09-01-2009, 05:18 PM

pheww.........thanks guys! for a minute there i thought the muffler guy messed it up.

iheartsole · 09-01-2009, 05:31 PM

yeah that looks normal

Euro_E93 · 09-01-2009, 05:31 PM

Quote:

Originally Posted by xs*****

Yes, it's normal. It's a flap that closes during cold starts... I believe, to help warm up your cats. Use search to find out more info on it... as well as ways to keep it open when you start your engine (ex. golf tee mod).

what exactly is a golf tee mod? and what does it do?

deletedelete · 09-01-2009, 05:33 PM

Quote:

Originally Posted by Euro_E93

what exactly is a golf tee mod? and what does it do?

Turns that valve off to make more sound during start up. It should be called the bb mod. Pop off that black vacuum line going to the valve, put in a bb, zip tie it and tuck it to the side. Now the valve wont close. No it dont hurt or void anything, just makes startup a bit louder.

Craig@SupremePower · 09-01-2009, 05:43 PM

yeah supposed to be there as explained above..

cassey · 09-01-2009, 07:25 PM

No need for a BB. Just kink the vacuum hose and zip tie it.

deletedelete · 09-01-2009, 07:47 PM

I put a bb in. Then kinked it and used a zip tie to hold the kink and bb in place. No air is getting through that.

09-01-2009, 05:06 PM	#1
Euro_E93 Second Lieutenant 21 Rep 260 Posts Drives: '09 E93 Join Date: Aug 2009 Location: socal iTrader: (3) Garage List 2009 BMW E93 Conver ... [0.00]	Metal piece inside the exhaust........ Hi, there's a round piece of metal inside the left exhaust pipe. Is this normal? Attached Images
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09-01-2009, 05:12 PM	#2
xsb00st Lieutenant Colonel 185 Rep 1,640 Posts Drives: Slow Join Date: Nov 2005 Location: Earth iTrader: (21)	Yes, it's normal. It's a flap that closes during cold starts... I believe, to help warm up your cats. Use search to find out more info on it... as well as ways to keep it open when you start your engine (ex. golf tee mod).
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09-01-2009, 05:12 PM	#3
longtran Lieutenant General 1434 Rep 16,628 Posts Drives: E90 M3 Join Date: Jul 2005 Location: CA iTrader: (105) Garage List 2006 325i [0.00]	its a valve. it controls the sound of the exhaust. it opens and closes. yes it is normal
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09-01-2009, 05:12 PM	#4
deletedelete Major General 363 Rep 5,873 Posts Drives: m Join Date: Nov 2008 Location: usa iTrader: (14) Garage List 2013 e92 M3 [0.00] 2011 e93 M3 (sold) [0.00] 2009 335xi (sold) [0.00]	lol, yup its fine. __________________ ---> Click For xi/xDrive Suspension Compatibility List <---
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09-01-2009, 05:18 PM	#5
Euro_E93 Second Lieutenant 21 Rep 260 Posts Drives: '09 E93 Join Date: Aug 2009 Location: socal iTrader: (3) Garage List 2009 BMW E93 Conver ... [0.00]	pheww.........thanks guys! for a minute there i thought the muffler guy messed it up.
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09-01-2009, 05:31 PM	#6
iheartsole Brigadier General 85 Rep 4,929 Posts Drives: 08 335i coupe Join Date: Apr 2007 Location: San Diego iTrader: (2)	yeah that looks normal
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09-01-2009, 05:43 PM	#9
Craig@SupremePower G.O.A.T.! 1001 Rep 74,998 Posts Drives: '18 GMC Yukon XL Join Date: Mar 2008 Location: New Jersey iTrader: (14)	yeah supposed to be there as explained above..
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09-01-2009, 07:25 PM	#10
cassey Private First Class 5 Rep 181 Posts Drives: 2008 335i Sedan Join Date: Jan 2008 Location: Las Vegas iTrader: (0)	No need for a BB. Just kink the vacuum hose and zip tie it. __________________ 2008 Monaco Blue E90 335i 6MT. Mods: 19" ITC Euro SD's, E46 ZHP shift knob, Matte black grills, Black Lines, 12" Infinity sub.
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09-01-2009, 07:47 PM	#11
deletedelete Major General 363 Rep 5,873 Posts Drives: m Join Date: Nov 2008 Location: usa iTrader: (14) Garage List 2013 e92 M3 [0.00] 2011 e93 M3 (sold) [0.00] 2009 335xi (sold) [0.00]	I put a bb in. Then kinked it and used a zip tie to hold the kink and bb in place. No air is getting through that. __________________ ---> Click For xi/xDrive Suspension Compatibility List <---
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