humming noise from CAI?

General engine questions/issues that aren't specific to the other categories
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humming noise from CAI?

By JUICE
- Tue Mar 29, 2011 10:01 pm #247005 we put a AEM short ram on my buddies D15B and all seemed normal, sounded great, just like it had on my LS.


he brought it over today and at idle it's making this loud noise like you get when you blow across the top of a bottle.. car is running perfect, no idle surges, no noticeable vacuum leaks.


only way to make the noise stop is to take off the filter and slightly cover the inlet.. if you cover it up all the way it wants to stall so i don't think there's a leak. it's not causing a problem just annoying.


anyone else get any strange tones from their intake? when i had it on my car it whistled a little when slightly revved, but nothing like this.. any ideas :?
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By mooze
- Sat Apr 02, 2011 7:53 am #247768 seems normal
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By forcefedEG
- Sun Apr 03, 2011 1:12 am #247909
mooze wrote:seems normal



Kinda what I thought he first time I read what you were saying, no 2 engines would sound the same through the same Cai.... jus my .02
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By JUICE
- Sun Apr 03, 2011 1:24 am #247913 it's quite LOUD though.. like, it's coming off if we can't make it stop. only does it at idle and it's very annoying
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By poorman type-r
- Sun Apr 03, 2011 1:24 am #247914 My friend had the same problem when he first started his b20vtec and it got so annoying that we pulled the CAI off and just ran from the throttle body.
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By JUICE
- Sun Apr 03, 2011 1:32 am #247917 glad someone else knows what i'm talking about! it's a very obnoxious sound! :lol:


did he try changing the length of it or anything? that's what i was gonna try next but, sounds like it might be going back to stock intake. sucks cause it sounds rowdy on the little D15b
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By poorman type-r
- Wed Apr 06, 2011 7:41 pm #248719 Ha yeah its very annoying, one of our friends had a short ram intake and it was much bigger in circumference so we through that on and it stop, but he ended up just running it from the throttle body, saved money.
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By Eg6H2D
- Wed Apr 06, 2011 8:20 pm #248725 That's Normal.. If it's new. let it break in. Mines still does it actually i like it. nice hummmmmm with that hisssssssss. and the whistle when you rev it. =]..

If anything mess a little with the Idler screw at the TB see if it changes anything..
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By 94EJ2
- Thu Apr 07, 2011 3:47 am #248801 could be the style of filter he is running my specter filter did that but my apc filter dont the apc has filter on the top also where the specter didnt
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By poorman type-r
- Tue Apr 12, 2011 9:15 pm #250037 Yeah because doesn't the specter filter start off skinny and gets a bit wider? That might've been my friends issue as well because he had one. Just get a HKS filter :thumb:
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By JUICE
- Tue Apr 12, 2011 10:42 pm #250051
EG6b20R wrote:That's Normal.. If it's new. let it break in. Mines still does it actually i like it. nice hummmmmm with that hisssssssss. and the whistle when you rev it. =]..

If anything mess a little with the Idler screw at the TB see if it changes anything..



it was on my car for years. this isn't a normal noise from an intake. this noise is MUCH louder than normal, and not in a good way.

put it this way.. his car has a nice quiet stock exhaust. you can hear the hummmmm from a good 100ft away from the car..
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By mooze
- Wed Apr 13, 2011 8:31 am #250166 your idle intake consumption has increased for some reason....mine did it because a stuck iacv....still nothing big....just a large consumption of air to keep the car running.
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By Eg6H2D
- Fri Apr 15, 2011 12:03 am #250467
mooze wrote:your idle intake consumption has increased for some reason....mine did it because a stuck iacv....still nothing big....just a large consumption of air to keep the car running.



That's true. that might be it..
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