Fluttering sound from BOV - Page 3 - Subaru Impreza GC8 & RS Forum & Community: RS25.com

ACraPPyRS · 11-08-2006, 12:01 PM

Quote:

Originally Posted by Aphex28

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.

So even tho the BOV IS venting the air...it still could be compressor surge? And also if it is compressor surge, what would be causing it..and how can I stop it?

:EDIT: Ok now that I think about even when revving in nuetral my friends car's BOV makes a normal noise and it's only making like 1 psi in neutral..so it can't be that its just the way it sounds under low PSI. So how can I stop the compressor surge?

ACraPPyRS · 11-08-2006, 10:37 PM

A little help?

KAX · 11-08-2006, 11:17 PM

looser spring or a BOV that is designed for a low boost setup. have you still not contacted whoever made your turbo kit? im sure you could get all this figured out in a matter of minutes if you call them.

ACraPPyRS · 11-09-2006, 09:44 AM

Quote:

Originally Posted by KAX

looser spring or a BOV that is designed for a low boost setup. have you still not contacted whoever made your turbo kit? im sure you could get all this figured out in a matter of minutes if you call them.

Ok my Bov has a 7 psi spring. So once I turn the boost up to where I want it, around 6-7, everything should be fine...

KAX · 11-09-2006, 10:30 AM

keyword: should.

i cant tell you definitely.

**TipStylez** · 11-10-2006, 11:26 AM

Sell your car, and get a civic.

Problem solved. Your not worthy of a turboed subaru.

ACraPPyRS · 11-11-2006, 03:53 PM

Quote:

Originally Posted by TipStylez

Sell your car, and get a civic.

Problem solved. Your not worthy of a turboed subaru.

WTF....?

svek · 11-11-2006, 04:31 PM

get a sound clip of it. ill bet its from running low boost. 7 psi isnt considered high boost either.

what kind of times do you run in that boosted 25?

hatchbuilder · 11-16-2006, 12:40 AM

could it just be your wastegate opening and closing? I bet it's your wastegate. They do that flutter sound as they vent exhaust gasses past the turbo. It is normal. It is a little weird if you have never heard it before. If everything is plumbed correctly with your vacuum lines in the right spots it should be fine.

FuJi K · 11-17-2006, 11:19 PM

On light boost, it'll flutter. Some people experience fluttler running a FMIC due to more air in the system as a whole than less air in the system of a TMIC.

Ever hear those Supra's revving and the BOV chirping flutter?

11-08-2006, 10:37 PM	#22 (permalink)
ACraPPyRS 2.2L Turbo Car: 2005 RSTi Fav Mod: EJ257 :) My: Subaru Parts for sale Join Date: Jul 2006 Location: Bronx,NY/Bloomington, IN Trader Rating: (4) Posts: 2,154	A little help? __________________ Phi Kappa Sigma!

11-10-2006, 11:26 AM	#26 (permalink)
TipStylez XCELMotorsports! Car: Everything nice Fav Mod: Suspenson My: Subaru Parts for sale Join Date: Jul 2005 Location: Seattle Trader Rating: (0) Posts: 1,035	Sell your car, and get a civic. Problem solved. Your not worthy of a turboed subaru. __________________ XCELMotorsports.com

11-11-2006, 04:31 PM	#28 (permalink)
svek 2.2L Turbo My: Subaru Parts for sale Join Date: Sep 2005 Location: I'm in teh Sac Trader Rating: (7) Posts: 3,342	get a sound clip of it. ill bet its from running low boost. 7 psi isnt considered high boost either. what kind of times do you run in that boosted 25? __________________ HomoeostasiS

11-17-2006, 11:19 PM	#30 (permalink)
FuJi K 2.5L RS-T Car: MY99 GF4 EJ225 EVO3-16G My: Subaru Parts for sale Join Date: Dec 2001 Location: St. Paul MN United States of America Trader Rating: (2) Posts: 4,370	On light boost, it'll flutter. Some people experience fluttler running a FMIC due to more air in the system as a whole than less air in the system of a TMIC. Ever hear those Supra's revving and the BOV chirping flutter? __________________ It's about the Top End!!!

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11-08-2006, 11:17 PM	#23 (permalink)
KAX 2.7L Car: 2000 BRP Subaru Impreza 2.5RS Fav Mod: 2002 WRX Swap My: Subaru Parts for sale Join Date: Oct 2006 Location: Orlando, FL Trader Rating: (6) Posts: 486	looser spring or a BOV that is designed for a low boost setup. have you still not contacted whoever made your turbo kit? im sure you could get all this figured out in a matter of minutes if you call them.

11-09-2006, 10:30 AM	#25 (permalink)
KAX 2.7L Car: 2000 BRP Subaru Impreza 2.5RS Fav Mod: 2002 WRX Swap My: Subaru Parts for sale Join Date: Oct 2006 Location: Orlando, FL Trader Rating: (6) Posts: 486	keyword: should. i cant tell you definitely.

11-16-2006, 12:40 AM	#29 (permalink)
hatchbuilder 2.7L Car: 1993 Impreza Wagon Dreadnaught Fav Mod: Turbo My: Subaru Parts for sale Join Date: Mar 2005 Location: PDX Trader Rating: (1) Posts: 414	could it just be your wastegate opening and closing? I bet it's your wastegate. They do that flutter sound as they vent exhaust gasses past the turbo. It is normal. It is a little weird if you have never heard it before. If everything is plumbed correctly with your vacuum lines in the right spots it should be fine.

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