Strange rattle from exhaust

GreQonE · 07-03-2018, 10:34 PM

Hello everyone,

For quite a while (500 kilometers or so) I have been hearing a strange rattle coming from my exhaust pipe.
The rattle is present on cold start and on normal cruising when RPM's are at 1500-1800.
The rattle disappears when I toggle on "SPORT" mode which opens exhaust flap.

Here is a video clip of aforementioned rattle:

Should I be worried? Or is it (as I think it is) something that got loose in the exhaust?

EDIT: No codes on the car

JUMAS · 07-03-2018, 11:13 PM

Sounds normal to me, but that exhaust flap is your issue. You can mod it to keep it open permanently using a golf tee, or you can disconnect the harness behind the tail light. if you jiggle the exhaust flap by hand you can see it move and hear it rattle. they also sell a very expensive fix online that will tighten it up and keep it from rattling while maintaining it's original functionality.

Toome · 07-03-2018, 11:26 PM

Quote:

Originally Posted by GreQonE

Hello everyone,

For quite a while (500 kilometers or so) I have been hearing a strange rattle coming from my exhaust pipe.
The rattle is present on cold start and on normal cruising when RPM's are at 1500-1800.
The rattle disappears when I toggle on "SPORT" mode which opens exhaust flap.

Here is a video clip of aforementioned rattle:

Should I be worried? Or is it (as I think it is) something that got loose in the exhaust?

EDIT: No codes on the car

I would disconnect the harness behind the driver's side tail light. Makes for better sound anyway.

opjose · 07-04-2018, 12:26 AM

Normal CAN flap sound.

Search for the golf tee mod for more info.

Supermoon · 07-04-2018, 02:28 AM

Quote:

Originally Posted by JUMAS

Sounds normal to me, but that exhaust flap is your issue. You can mod it to keep it open permanently using a golf tee, or you can disconnect the harness behind the tail light. if you jiggle the exhaust flap by hand you can see it move and hear it rattle. they also sell a very expensive fix online that will tighten it up and keep it from rattling while maintaining it's original functionality.

I'm interested. What's it called and where can I find it?

GreQonE · 07-04-2018, 11:25 AM

Thank you guys, you have calmed my nerves.

Will try to fix it up.

JUMAS · 07-05-2018, 04:55 PM

Quote:

Originally Posted by Supermoon

I'm interested. What's it called and where can I find it?

http://www.agatools.com/part/exhaust...repair-kit-e92

$120 ridiculous LOL

Supermoon · 07-05-2018, 06:35 PM

Quote:

Originally Posted by JUMAS

http://www.agatools.com/part/exhaust...repair-kit-e92

$120 ridiculous LOL

I'm not even sure if that thing will stay attached over winter.

JUMAS · 07-05-2018, 07:38 PM

Quote:

Originally Posted by Supermoon

I'm not even sure if that thing will stay attached over winter.

Yeah idk I just have my harness unplugged, though the lil thing still rattles a bit.

biz77 · 07-06-2018, 03:33 PM

Quote:

Originally Posted by JUMAS

http://www.agatools.com/part/exhaust...repair-kit-e92

$120 ridiculous LOL

BMW's solution is to sell you a new left-side muffler at ~ five times that price.

07-03-2018, 10:34 PM	#1
GreQonE Private First Class 36 Rep 166 Posts Drives: '2011 E92 LCI 335i Join Date: Jan 2015 Location: Polska iTrader: (0)	Strange rattle from exhaust Hello everyone, For quite a while (500 kilometers or so) I have been hearing a strange rattle coming from my exhaust pipe. The rattle is present on cold start and on normal cruising when RPM's are at 1500-1800. The rattle disappears when I toggle on "SPORT" mode which opens exhaust flap. Here is a video clip of aforementioned rattle: Should I be worried? Or is it (as I think it is) something that got loose in the exhaust? EDIT: No codes on the car Last edited by GreQonE; 07-03-2018 at 10:42 PM..
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07-03-2018, 11:13 PM	#2
JUMAS Private First Class 39 Rep 161 Posts Drives: 2011 335i Join Date: Mar 2018 Location: Tampa iTrader: (0)	Sounds normal to me, but that exhaust flap is your issue. You can mod it to keep it open permanently using a golf tee, or you can disconnect the harness behind the tail light. if you jiggle the exhaust flap by hand you can see it move and hear it rattle. they also sell a very expensive fix online that will tighten it up and keep it from rattling while maintaining it's original functionality.
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07-04-2018, 12:26 AM	#4
opjose Major 244 Rep 1,373 Posts Drives: 335xi Join Date: May 2016 Location: Md iTrader: (0)	Normal CAN flap sound. Search for the golf tee mod for more info.
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07-04-2018, 11:25 AM	#6
GreQonE Private First Class 36 Rep 166 Posts Drives: '2011 E92 LCI 335i Join Date: Jan 2015 Location: Polska iTrader: (0)	Thank you guys, you have calmed my nerves. Will try to fix it up.
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