Fluttering sound from BOV - Page 2 - Subaru Impreza GC8 & RS Forum & Community: RS25.com

Aphex28 · 11-06-2006, 08:52 PM

sorry for the quality... those vids were taken with my cell phone

**TipStylez** · 11-06-2006, 10:32 PM

In this video, it shows how your BOV should sound, and how it shouldnt.
http://videos.streetfire.net/search/...3f0150f005.htm

ACraPPyRS · 11-06-2006, 10:52 PM

Didn't get much out of the cell phone vids..but my noise is definately coming from the BOV..not the turbo. And also the BOV IS opening and releasing the air. I don't think it's compressor surge..but I also know that BOV's are not supposed to sound like this. And BTW it did sound similar to the vid showing compressor surge..but not exactly like it. Ill try to put a vid or something up showing the noise.

ACraPPyRS · 11-06-2006, 10:54 PM

Quote:

Originally Posted by Aphex28

. If that doesnt work, try oiling your bov or using washers/cutting the spring

It's a Tial BOV..cant adjust the spring at all..comes set at 7 psi.

Aphex28 · 11-06-2006, 11:12 PM

the first vid you can definately hear the compressor surge.. just listen for it when i let off

ACraPPyRS · 11-07-2006, 10:02 AM

So if the BOV is releasing air that means it can't be compressor surge..right?

**TipStylez** · 11-07-2006, 12:19 PM

Not, just means its not opening up fast enough.

Did you even read my post? The link i psoted tells you all about how a BOV sound sound.

Get a adj BOV if you want to keep the sound, you will lose hp but if getting the turbo is all about the sound then yeah..

Like i said, running 4psi aint strong enough to push a bov thats built for somthing higher.

Also, where is your BOV located?

Aphex28 · 11-07-2006, 01:46 PM

just try re-routing the vaccum line to the bov. Air may be coming out of the bov but that doesn't mean it's working properly.

ACraPPyRS · 11-07-2006, 09:49 PM

Quote:

Originally Posted by TipStylez

Not, just means its not opening up fast enough.

Did you even read my post? The link i psoted tells you all about how a BOV sound sound.

Get a adj BOV if you want to keep the sound, you will lose hp but if getting the turbo is all about the sound then yeah..

Like i said, running 4psi aint strong enough to push a bov thats built for somthing higher.

Also, where is your BOV located?

It's located about 1 1/2 ft. from the throttle body

And I already tried changing the source of the vacuum. I cant figure out why it's sounding like this. After I get the emanage ultimate I ordered and I feel comfortable with the engine management im turning up the boost to 7psi and we'll see how it sounds.

Aphex28 · 11-07-2006, 11:07 PM

I don't know if that'll solve it... because my BOV goes off fully on partial throttle, read 1-2psi.

If it does solve it, great... but if it doesn't you're only amplifying the damage being done to your turbo via compressor surge.

11-06-2006, 10:32 PM	#12 (permalink)
TipStylez XCELMotorsports! Car: Everything nice Fav Mod: Suspenson My: Subaru Parts Join Date: Jul 2005 Location: Seattle Trader Rating: (0) Posts: 1,035	In this video, it shows how your BOV should sound, and how it shouldnt. http://videos.streetfire.net/search/...3f0150f005.htm __________________ XCELMotorsports.com

11-06-2006, 10:52 PM	#13 (permalink)
ACraPPyRS 2.2L Turbo Car: 2005 RSTi Fav Mod: EJ257 :) My: Subaru Parts Join Date: Jul 2006 Location: Bronx,NY/Bloomington, IN Trader Rating: (4) Posts: 2,154	Didn't get much out of the cell phone vids..but my noise is definately coming from the BOV..not the turbo. And also the BOV IS opening and releasing the air. I don't think it's compressor surge..but I also know that BOV's are not supposed to sound like this. And BTW it did sound similar to the vid showing compressor surge..but not exactly like it. Ill try to put a vid or something up showing the noise. __________________ Phi Kappa Sigma! Last edited by ACraPPyRS; 11-06-2006 at 10:56 PM..

11-07-2006, 10:02 AM	#16 (permalink)
ACraPPyRS 2.2L Turbo Car: 2005 RSTi Fav Mod: EJ257 :) My: Subaru Parts Join Date: Jul 2006 Location: Bronx,NY/Bloomington, IN Trader Rating: (4) Posts: 2,154	So if the BOV is releasing air that means it can't be compressor surge..right? __________________ Phi Kappa Sigma!

11-07-2006, 12:19 PM	#17 (permalink)
TipStylez XCELMotorsports! Car: Everything nice Fav Mod: Suspenson My: Subaru Parts Join Date: Jul 2005 Location: Seattle Trader Rating: (0) Posts: 1,035	Not, just means its not opening up fast enough. Did you even read my post? The link i psoted tells you all about how a BOV sound sound. Get a adj BOV if you want to keep the sound, you will lose hp but if getting the turbo is all about the sound then yeah.. Like i said, running 4psi aint strong enough to push a bov thats built for somthing higher. Also, where is your BOV located? __________________ XCELMotorsports.com

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11-06-2006, 08:52 PM	#11 (permalink)
Aphex28 2.2L Turbo Car: 00 STM 300hp o' awesome Fav Mod: ?@!1!one!!1 My: Subaru Parts Join Date: Jun 2004 Location: Pepperell, MA Trader Rating: (30) Posts: 3,944	sorry for the quality... those vids were taken with my cell phone

11-06-2006, 11:12 PM	#15 (permalink)
Aphex28 2.2L Turbo Car: 00 STM 300hp o' awesome Fav Mod: ?@!1!one!!1 My: Subaru Parts Join Date: Jun 2004 Location: Pepperell, MA Trader Rating: (30) Posts: 3,944	the first vid you can definately hear the compressor surge.. just listen for it when i let off

11-07-2006, 01:46 PM	#18 (permalink)
Aphex28 2.2L Turbo Car: 00 STM 300hp o' awesome Fav Mod: ?@!1!one!!1 My: Subaru Parts Join Date: Jun 2004 Location: Pepperell, MA Trader Rating: (30) Posts: 3,944	just try re-routing the vaccum line to the bov. Air may be coming out of the bov but that doesn't mean it's working properly.

11-07-2006, 11:07 PM	#20 (permalink)
Aphex28 2.2L Turbo Car: 00 STM 300hp o' awesome Fav Mod: ?@!1!one!!1 My: Subaru Parts Join Date: Jun 2004 Location: Pepperell, MA Trader Rating: (30) Posts: 3,944	I don't know if that'll solve it... because my BOV goes off fully on partial throttle, read 1-2psi. If it does solve it, great... but if it doesn't you're only amplifying the damage being done to your turbo via compressor surge.

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