Weird sound after BMS intake install

hotchicken · 03-09-2016, 12:12 PM

Hey guys, maybe someone else had this problem. Just installed the intake on my 2012 N55 135i last week, and I think something sounds weird.

Does not matter whether the car is hot or cold. I get the sound when accelerating mildly just at 2000 RPM or so as I rev up, and then dropping off at 2700 or so. If I press harder or step on it, the sound goes away.

Hard to describe, but imagine putting some gravel in the bottom of a 5 gallon paint bucket and then sort of swirling that around on the bottom. Sort of a rough hollow sound. It's not the normal turbo sounds like a whistle or spinning sound.

I had my mechanic ride with me and of course it didn't do it quite as bad as it usually does. BHe thought it sounded like at those RPMs it was just between vacuum and boost. I think it something else. Anyone else have this issue?

I could hear the same sound faintly when I had the stock intake, but the aftermarket intake has just made it much louder and easier to hear. In other words, it's not new, just more pronounced since installing the intake.

I knew that adding the intake would make the engine easier to hear, but I see everyone talking about how great it sounds. Mine makes me cringe.

Also installed the JB4 a few days later, but hasn't really made any change. I do wonder if there might be something that I could tweak using the settings there that might help though.

Thoughts on this is and how to fix?

CRYA · 03-09-2016, 01:37 PM

Hey no real thoughts other than to suggest that the mind can play powerful tricks. I say this because I know you were initially concerned about your high mileage and I respectfully suggest that you could potentially be on overly-heightened alert if that makes sense. I installed my BMS intake at 50,000 miles a month ago and yeah it made some new weird noises I never heard before. Break it down into steps. Assuming everything else is OK with the car, the only thing the intake did was really replace a filter. I mean, unless you dropped a screwdriver in there or something??

What you ought to do is take the 25 mins and swap back on your stock setup and then go drive. That's probably the best diagnosis is going back to stock and checking. I'm by no means a mechanic as you well know since I'm the guy that dropped a grommet.

hotchicken · 03-09-2016, 02:56 PM

Quote:

Originally Posted by CRYA

Hey no real thoughts other than to suggest that the mind can play powerful tricks. I say this because I know you were initially concerned about your high mileage and I respectfully suggest that you could potentially be on overly-heightened alert if that makes sense. I installed my BMS intake at 50,000 miles a month ago and yeah it made some new weird noises I never heard before. Break it down into steps. Assuming everything else is OK with the car, the only thing the intake did was really replace a filter. I mean, unless you dropped a screwdriver in there or something??

What you ought to do is take the 25 mins and swap back on your stock setup and then go drive. That's probably the best diagnosis is going back to stock and checking. I'm by no means a mechanic as you well know since I'm the guy that dropped a grommet.

Ha! For sure the intake didn't cause the noise or any problem. I have been hearing the same sound at a very low level before I installed it. Now I just hear it much more loudly, but it's the same noise. Definitely pre-existing, just more noticeable now.

mike@x-ph.com · 03-09-2016, 03:25 PM

Post a video

hotchicken · 03-09-2016, 04:53 PM

Quote:

Originally Posted by mike@x-ph.com

Post a video

Of course it sounds fine all the way home as I try to record.

mike@x-ph.com · 03-09-2016, 04:59 PM

Quote:

Originally Posted by hotchicken

Of course it sounds fine all the way home as I try to record.

miro2296 · 03-10-2016, 12:51 PM

Quote:

Originally Posted by hotchicken

Of course it sounds fine all the way home as I try to record.

You found your solution. Record when you are tired of hearing the sound and it will go away!

No Style 135is · 04-27-2016, 09:39 PM

I believe I have the same issue with you. But my car has stock intake. The noise comes from 2k-3k rpm from 1-3 gear.
Anybody knows this issue?

rob24ert · 04-27-2016, 11:03 PM

whoosh? or like a turbo spooling whistle then it goes away once u keep rising/more throttle?

or maybe your chargepipe is cracked and flexing? making noises?

hotchicken · 04-28-2016, 06:22 AM

Quote:

Originally Posted by rob24ert

whoosh? or like a turbo spooling whistle then it goes away once u keep rising/more throttle?

or maybe your chargepipe is cracked and flexing? making noises?

I heard the noise and a lower level before I installed the new intake. It's the same before and after I replaced the charge pipe. Good thoughts though.

hotchicken · 04-28-2016, 06:25 AM

Quote:

Originally Posted by No Style 135is

I believe I have the same issue with you. But my car has stock intake. The noise comes from 2k-3k rpm from 1-3 gear.
Anybody knows this issue?

Sounds like me. Still no fixes. I do notice more recently that when the Darth Vader-like whooshing stops, I get a bump in power. Suspect it's a vacuum related turbo issue. I'm no mechanic, so I can't say or even intelligently speculate exactly what it is. I just know this sounds terrible, then stops, then the car feels better. As you note, this is only a lower speeds and lower gears, and not under hard acceleration.

No Style 135is · 04-28-2016, 09:55 AM

Quote:

Originally Posted by hotchicken

Sounds like me. Still no fixes. I do notice more recently that when the Darth Vader-like whooshing stops, I get a bump in power. Suspect it's a vacuum related turbo issue. I'm no mechanic, so I can't say or even intelligently speculate exactly what it is. I just know this sounds terrible, then stops, then the car feels better. As you note, this is only a lower speeds and lower gears, and not under hard acceleration.

Did you go to dealer and let them check? Is your car stock?
My car has dinan s3, er chargepipe, wagner fmic, stock intake.
I still have a warranty. If they see aftermarket part, they might deny it.

hotchicken · 04-28-2016, 11:31 AM

Quote:

Originally Posted by No Style 135is

Did you go to dealer and let them check? Is your car stock?
My car has dinan s3, er chargepipe, wagner fmic, stock intake.
I still have a warranty. If they see aftermarket part, they might deny it.

The car had no mods other than an ER Chargepipe when I first heard the noise at a low level. As soon as I installed the BMS intake it was much louder, but not really different. It always been there in other words, just easier to hear with the intake. Installed JB4 after that, but no change.

hotchicken · 04-28-2016, 11:36 AM

Quote:

Originally Posted by No Style 135is

Did you go to dealer and let them check? Is your car stock?
My car has dinan s3, er chargepipe, wagner fmic, stock intake.
I still have a warranty. If they see aftermarket part, they might deny it.

Oh, and sorry, my car has 97,000 miles so I'm not going to the dealer anymore. I use an independent guy who is very good. I did have him ride with me, and the car did not make quite as much noise as it usually does of course. He thought it was just vacuum and boost trading off, but I just don't think it sounds right.

Have to go in for brakes shortly, so I will have him check it out more thoroughly then. It clearly has something to do with some sort of open/close mechanism.

No Style 135is · 04-28-2016, 12:53 PM

Lemme try tomorrow to go to dealer. My car has only 29k miles on it. Lets see what they can do for it.

hotchicken · 04-28-2016, 12:58 PM

Quote:

Originally Posted by No Style 135is

Lemme try tomorrow to go to dealer. My car has only 29k miles on it. Lets see what they can do for it.

Awesome. Please do update. Thanks!

jmz135 · 04-28-2016, 05:09 PM

I also have this exact same issue, it's been driving me crazy trying to figure out what it is. It only recently started happening. I do also have the BMS intake - though I've had that for a while and the noise just started.

Stewy_604 · 04-28-2016, 07:17 PM

+1 on post a video...almost impossible to tell based off words.

hotchicken · 05-02-2016, 08:07 AM

Quote:

Originally Posted by No Style 135is

Lemme try tomorrow to go to dealer. My car has only 29k miles on it. Lets see what they can do for it.

Hey any luck?

hotchicken · 05-02-2016, 08:08 AM

Quote:

Originally Posted by Stewy_604

+1 on post a video...almost impossible to tell based off words.

Have tried but too much road noise. Only happens when driving. Can't replicate revving in park b/c no boost then.

No Style 135is · 05-02-2016, 01:34 PM

I just got out from dealer this morning. They inspected vacuum connections at solenoid then replaced the pressure converter for tubocharger. Now, the noise was gone.
I'm so happy with this. I got repaired for free under warranty.

jmz135 · 05-02-2016, 01:50 PM

Quote:

Originally Posted by No Style 135is

I just got out from dealer this morning. They inspected vacuum connections at solenoid then replaced the pressure converter for tubocharger. Now, the noise was gone.
I'm so happy with this. I got repaired for free under warranty.

That's interesting - has the car driven any differently since that has been replaced? I feel like the noise on mine is coming more from the rear of the car versus the engine bay, but I could be wrong.

03-09-2016, 12:12 PM	#1
hotchicken Second Lieutenant 47 Rep 246 Posts Drives: 2016 M235ix Join Date: Jun 2015 Location: Tennessee iTrader: (2)	Weird sound after BMS intake install Hey guys, maybe someone else had this problem. Just installed the intake on my 2012 N55 135i last week, and I think something sounds weird. Does not matter whether the car is hot or cold. I get the sound when accelerating mildly just at 2000 RPM or so as I rev up, and then dropping off at 2700 or so. If I press harder or step on it, the sound goes away. Hard to describe, but imagine putting some gravel in the bottom of a 5 gallon paint bucket and then sort of swirling that around on the bottom. Sort of a rough hollow sound. It's not the normal turbo sounds like a whistle or spinning sound. I had my mechanic ride with me and of course it didn't do it quite as bad as it usually does. BHe thought it sounded like at those RPMs it was just between vacuum and boost. I think it something else. Anyone else have this issue? I could hear the same sound faintly when I had the stock intake, but the aftermarket intake has just made it much louder and easier to hear. In other words, it's not new, just more pronounced since installing the intake. I knew that adding the intake would make the engine easier to hear, but I see everyone talking about how great it sounds. Mine makes me cringe. Also installed the JB4 a few days later, but hasn't really made any change. I do wonder if there might be something that I could tweak using the settings there that might help though. Thoughts on this is and how to fix?
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03-09-2016, 01:37 PM	#2
CRYA Second Lieutenant 56 Rep 265 Posts Drives: N55 135i Join Date: Feb 2016 Location: Napa, CA iTrader: (0)	Hey no real thoughts other than to suggest that the mind can play powerful tricks. I say this because I know you were initially concerned about your high mileage and I respectfully suggest that you could potentially be on overly-heightened alert if that makes sense. I installed my BMS intake at 50,000 miles a month ago and yeah it made some new weird noises I never heard before. Break it down into steps. Assuming everything else is OK with the car, the only thing the intake did was really replace a filter. I mean, unless you dropped a screwdriver in there or something?? What you ought to do is take the 25 mins and swap back on your stock setup and then go drive. That's probably the best diagnosis is going back to stock and checking. I'm by no means a mechanic as you well know since I'm the guy that dropped a grommet.
	Appreciate 0 Quote

03-09-2016, 03:25 PM	#4
mike@x-ph.com Joint Chiefs of Staff 24072 Rep 190,597 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Post a video __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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04-27-2016, 09:39 PM	#8
No Style 135is Private First Class 8 Rep 187 Posts Drives: '90 gtr r32 Join Date: Feb 2013 Location: Albany, NY iTrader: (0)	I believe I have the same issue with you. But my car has stock intake. The noise comes from 2k-3k rpm from 1-3 gear. Anybody knows this issue?
	Appreciate 0 Quote

04-27-2016, 11:03 PM	#9
rob24ert First Lieutenant 83 Rep 394 Posts Drives: 2011 135i Join Date: Mar 2015 Location: Canada iTrader: (1)	whoosh? or like a turbo spooling whistle then it goes away once u keep rising/more throttle? or maybe your chargepipe is cracked and flexing? making noises?
	Appreciate 0 Quote

04-28-2016, 12:53 PM	#15
No Style 135is Private First Class 8 Rep 187 Posts Drives: '90 gtr r32 Join Date: Feb 2013 Location: Albany, NY iTrader: (0)	Lemme try tomorrow to go to dealer. My car has only 29k miles on it. Lets see what they can do for it.
	Appreciate 0 Quote

04-28-2016, 05:09 PM	#17
jmz135 First Lieutenant 40 Rep 326 Posts Drives: '11 MT E82 Join Date: May 2014 Location: Bay Area iTrader: (3) Garage List 2005 Honda S2000 [0.00] 2011 BMW 135i [0.00]	I also have this exact same issue, it's been driving me crazy trying to figure out what it is. It only recently started happening. I do also have the BMS intake - though I've had that for a while and the noise just started. __________________ 2011 MT DSB 135i \| MHD Tune \| AA FMIC \| ER CP \| Wagner DP \| Custom Mids & Axleback \| KW V1s \| VMR V701s \| CDV & Clutch Spring Delete \|
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04-28-2016, 07:17 PM	#18
Stewy_604 First Lieutenant 77 Rep 310 Posts Drives: 2011 E82 135i M-Sport Join Date: Aug 2015 Location: Vancouver, B.C. iTrader: (0)	+1 on post a video...almost impossible to tell based off words. __________________ 2011 BMW 135i M Sport Space Grey - BMS JB4, VRSF 3.5" catless DP, Berk exhaust, BMS intake, ER CP, Eibach Pro-Kit, H&R spacers, black kidneys, Blacklines, LUX angel eyes 2014 BMW X5 xDrive 35d M Sport Mineral White - MPBK w/ F85 rotors & Carbotech pads, ACS Springs/Links, iND reflector deletes, iND black roundels, MP black kidneys, M50D grille inserts 2007 Suzuki GSX-R 750 - too much to list
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05-02-2016, 01:34 PM	#21
No Style 135is Private First Class 8 Rep 187 Posts Drives: '90 gtr r32 Join Date: Feb 2013 Location: Albany, NY iTrader: (0)	I just got out from dealer this morning. They inspected vacuum connections at solenoid then replaced the pressure converter for tubocharger. Now, the noise was gone. I'm so happy with this. I got repaired for free under warranty.
	Appreciate 0 Quote

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