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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Bms intake n55 - strange noise at 1500-2000 rpm



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      06-21-2015, 03:13 PM   #1
ricerider187
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Bms intake n55 - strange noise at 1500-2000 rpm

I installed my bms intake

I am pretty sure I have it on securely, but was not 100% sure as the intake was difficult to squeeze into elbow piece but I got it in enough to secure the metal fastener over , but I thought it should have went in more

I love it especially the blow off noise when I let off the gas after stepping on it

But at 1500-2000 rpm, especially around 1500 rpm, it makes this noise

Sounds like a urgggggg but low vacuum like noise

Is this just the intake ? Or is there a leak
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      06-22-2015, 08:07 AM   #2
Sidewinderpb
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Loosen the c-clamp enough to get the snorkel securely in there. It should go up to the ridge.
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      06-22-2015, 04:54 PM   #3
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i was getting a rattle noise when i installed mine before i removed the cowl. i found the small clip that connects to the lower half of the stock air box was rubbing on cowl causing the noise.
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      06-22-2015, 05:15 PM   #4
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I have this exact same sound. I also have an "Eeeeeee" when I hit boost hard. I have no leaks as I'm hitting boost in the logs but it's definitely there.
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      06-22-2015, 06:34 PM   #5
Dark_Knight_335
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Did you guys get the little metal anchor piece that anchors it to the airbox to keep it from moving around?

It should've come with every BMS intake shipped within the last year or so. If you didn't get it, be sure to ask Jason or someone at Burger Tuning for it.
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      06-24-2015, 01:22 PM   #6
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It sounds like it's building boost on the load of the gear. Does it happen in every gear at that rpm?, if you are giving gas in 3rd-4th and you hear it..its spooling up.
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      06-24-2015, 04:56 PM   #7
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bov is releasing boost. Electronic bovs are crazy
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      06-28-2015, 01:55 AM   #8
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Quote:
Originally Posted by Sidewinderpb View Post
Loosen the c-clamp enough to get the snorkel securely in there. It should go up to the ridge.
thanks everyone

i think the most logical answer was from Andrew that it is releasing BOV... it sounds like a little bit of air is getting sucked in our blown out... because like others say, when i stomp it i can hear the spooling

i think it is pretty secure but i cant get it up to the ridge

i got it enough for the clamp to go over the elbow enough to secure it

im pretty sure it is air tight it looks and feels it

im guna try one more time to get it in one more time

any recommendation other than try n stick it in there real hard


I personally think the BMS intake was a solid mod, huge bang for buck, even moreso than the JB4 i got

NOTHINGGGG beats the blow off noise when u step on it a little, then let go of the gas. that sound is worth a huge amount to me, being a ricerider

but the JB4 does have cool options which i still dont fully get
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      09-18-2015, 01:26 PM   #9
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Quote:
Originally Posted by ricerider187 View Post
thanks everyone

i think the most logical answer was from Andrew that it is releasing BOV... it sounds like a little bit of air is getting sucked in our blown out... because like others say, when i stomp it i can hear the spooling

i think it is pretty secure but i cant get it up to the ridge

i got it enough for the clamp to go over the elbow enough to secure it

im pretty sure it is air tight it looks and feels it

im guna try one more time to get it in one more time

any recommendation other than try n stick it in there real hard


I personally think the BMS intake was a solid mod, huge bang for buck, even moreso than the JB4 i got

NOTHINGGGG beats the blow off noise when u step on it a little, then let go of the gas. that sound is worth a huge amount to me, being a ricerider

but the JB4 does have cool options which i still dont fully get
I just installed the bms intake a few days ago and at first I was wondering the same thing about the type of sound you are describing and after talking to some people here on the forums, its actually the correct sound you are hearing. At first I didn't like it because I thought it was weird or something wrong, but now I'm starting to like it more and more! Kinda cool to hear your turbos.
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      09-18-2015, 01:52 PM   #10
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The only problem I see in your post is the difficulty of the install. My BMS intake pretty much slides right into the coupler, make sure it is right up against the ridge on the intake, and all around the intake as well.

Other then that I heae all sorts of sounds at different loads, sounds normal to me.
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      09-19-2015, 12:17 PM   #11
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Quote:
Originally Posted by ricerider187 View Post
I installed my bms intake

I am pretty sure I have it on securely, but was not 100% sure as the intake was difficult to squeeze into elbow piece but I got it in enough to secure the metal fastener over , but I thought it should have went in more

I love it especially the blow off noise when I let off the gas after stepping on it

But at 1500-2000 rpm, especially around 1500 rpm, it makes this noise

Sounds like a urgggggg but low vacuum like noise

Is this just the intake ? Or is there a leak
Post up a pic of how you pushed it in so I can take a look to make sure its in properly.

Mike
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      09-20-2015, 07:46 AM   #12
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It sounds either like its not secured properly to me
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