screaching noise in engine affter muffler delete

F80_M3llow · 01-20-2012, 07:26 PM

Quote:

Originally Posted by kiwi29

this is exactly what i ment lol i just grinded the old bolt off and screwed on a new one

So this bracket thing you are talking about is closest to the headers if im not mistaken. I'm going to investigate this and report back to you guys thanks a bunch

kiwi29 · 01-20-2012, 07:41 PM

Quote:

Originally Posted by BMWE90FANATIC

So this bracket thing you are talking about is closest to the headers if im not mistaken. I'm going to investigate this and report back to you guys thanks a bunch

yes, it's a bracket that holds the two mid pipes in place, while it doesn't do too much help, i left it there just in case and good luck on your car, if you need anymore help i'll try my best to assist you

F80_M3llow · 02-10-2012, 03:06 PM

well just an update i have been diging in the car for the past week and i still cant find the issue i looked at the bracket you guys mentioned tightened everything under there and the noise is still there.

F80_M3llow · 05-30-2012, 02:29 AM

Reviving an old thread. Well this noise is still there and I still can't figure it out. Any BMW techs here. To clarify more this happens when car is fully hot. If I beat on it for a little and come to a stop and idling this noise happens. If I gently tap the gas and let it go the noise happens right before the idle settles down. I want to love my car but I'm starting to hate it everyday. Thank if anyone answers.

Route 16 · 05-30-2012, 03:51 AM

Did'u try unbolting everything from midpipes to exhaust and rev? That would solve your worry if it's the engine. If it's the midpipes, you can buy my Eisenmann SR pipes and it'll sound better than muffler delete, GL.

cc_bavarian · 05-30-2012, 05:25 AM

Do you race a lot off the line? Aggressive launch at stop lights (alone/other cars)? If yes, how are you doing it?

Maybe something wrong with your torque converter.

Quote:

Originally Posted by BMWE90FANATIC

Reviving an old thread. Well this noise is still there and I still can't figure it out. Any BMW techs here. To clarify more this happens when car is fully hot. If I beat on it for a little and come to a stop and idling this noise happens. If I gently tap the gas and let it go the noise happens right before the idle settles down. I want to love my car but I'm starting to hate it everyday. Thank if anyone answers.

F80_M3llow · 05-30-2012, 11:06 AM

I rev the car high but I don't think a torque converter will make a noise like that.

F80_M3llow · 06-02-2012, 02:10 AM

Well I got access to a lift yesterday and unbolted the exhaust and tightened everything possible under the car. Heat shields and all. Still no avail to this noise. It's driving me into the ground. Everything under the car is normal. Shook the the exhaust and nothing is hitting or rattling in there. Would a vacuum leak cause this type of noise I do hear a slight hiss when tr idle drops before the noise starts.

F80_M3llow · 06-05-2012, 08:03 PM

Bump

F80_M3llow · 06-06-2012, 05:01 PM

Warmed up the car pretty good today to replicate the noise. Put a stethoscope to the tranny while the noise was accruing and it is not from the tranny but somewhere around that area. Will do some more testing.

F80_M3llow · 06-06-2012, 06:24 PM

Can anyone help me it's driving me insane and it is really embarrassing.

F80_M3llow · 06-07-2012, 06:28 PM

Wow nobody.

02-10-2012, 03:06 PM	#25
F80_M3llow Lieutenant Colonel 204 Rep 1,714 Posts Drives: 2011 335i Join Date: Apr 2008 Location: Norwalk CT iTrader: (14) Garage List 2016 BMW M3 [9.00] 2008 135i [7.00]	well just an update i have been diging in the car for the past week and i still cant find the issue i looked at the bracket you guys mentioned tightened everything under there and the noise is still there.
	Appreciate 0 Quote

05-30-2012, 02:29 AM	#26
F80_M3llow Lieutenant Colonel 204 Rep 1,714 Posts Drives: 2011 335i Join Date: Apr 2008 Location: Norwalk CT iTrader: (14) Garage List 2016 BMW M3 [9.00] 2008 135i [7.00]	Reviving an old thread. Well this noise is still there and I still can't figure it out. Any BMW techs here. To clarify more this happens when car is fully hot. If I beat on it for a little and come to a stop and idling this noise happens. If I gently tap the gas and let it go the noise happens right before the idle settles down. I want to love my car but I'm starting to hate it everyday. Thank if anyone answers.
	Appreciate 0 Quote

05-30-2012, 03:51 AM	#27
Route 16 I got lei'd 861 Rep 7,606 Posts Drives: '10 E90 M3 Join Date: Sep 2011 Location: Dark Side of the Moon iTrader: (62)	Did'u try unbolting everything from midpipes to exhaust and rev? That would solve your worry if it's the engine. If it's the midpipes, you can buy my Eisenmann SR pipes and it'll sound better than muffler delete, GL.
	Appreciate 0 Quote

05-30-2012, 11:06 AM	#29
F80_M3llow Lieutenant Colonel 204 Rep 1,714 Posts Drives: 2011 335i Join Date: Apr 2008 Location: Norwalk CT iTrader: (14) Garage List 2016 BMW M3 [9.00] 2008 135i [7.00]	I rev the car high but I don't think a torque converter will make a noise like that.
	Appreciate 0 Quote

06-02-2012, 02:10 AM	#30
F80_M3llow Lieutenant Colonel 204 Rep 1,714 Posts Drives: 2011 335i Join Date: Apr 2008 Location: Norwalk CT iTrader: (14) Garage List 2016 BMW M3 [9.00] 2008 135i [7.00]	Well I got access to a lift yesterday and unbolted the exhaust and tightened everything possible under the car. Heat shields and all. Still no avail to this noise. It's driving me into the ground. Everything under the car is normal. Shook the the exhaust and nothing is hitting or rattling in there. Would a vacuum leak cause this type of noise I do hear a slight hiss when tr idle drops before the noise starts.
	Appreciate 0 Quote

06-05-2012, 08:03 PM	#31
F80_M3llow Lieutenant Colonel 204 Rep 1,714 Posts Drives: 2011 335i Join Date: Apr 2008 Location: Norwalk CT iTrader: (14) Garage List 2016 BMW M3 [9.00] 2008 135i [7.00]	Bump
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06-06-2012, 05:01 PM	#32
F80_M3llow Lieutenant Colonel 204 Rep 1,714 Posts Drives: 2011 335i Join Date: Apr 2008 Location: Norwalk CT iTrader: (14) Garage List 2016 BMW M3 [9.00] 2008 135i [7.00]	Warmed up the car pretty good today to replicate the noise. Put a stethoscope to the tranny while the noise was accruing and it is not from the tranny but somewhere around that area. Will do some more testing.
	Appreciate 0 Quote

06-06-2012, 06:24 PM	#33
F80_M3llow Lieutenant Colonel 204 Rep 1,714 Posts Drives: 2011 335i Join Date: Apr 2008 Location: Norwalk CT iTrader: (14) Garage List 2016 BMW M3 [9.00] 2008 135i [7.00]	Can anyone help me it's driving me insane and it is really embarrassing.
	Appreciate 0 Quote

06-07-2012, 06:28 PM	#34
F80_M3llow Lieutenant Colonel 204 Rep 1,714 Posts Drives: 2011 335i Join Date: Apr 2008 Location: Norwalk CT iTrader: (14) Garage List 2016 BMW M3 [9.00] 2008 135i [7.00]	Wow nobody.
	Appreciate 0 Quote