Can someone tell me what this sound is? - Subaru WRX Forum
 
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#1 Old 08-13-2010, 11:40 PM
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Can someone tell me what this sound is?

the whining sound, sounds like a super charger almost. i was guessing maybe turbo spoiling or air leak but have no clue


turbo xs DP,turbo xs cai, turbo xs FMIC,3port BCS,walbro255 fp, spt catback, perrin BOV, 300ish whp
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#2 Old 08-14-2010, 10:25 AM
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My car kind of sounds like (from what I remember). Not as high pitched, but that could be from a few different things. Have you logged/monitored the car? Does everything check out?

Joshua
"2007 WRX- PPG'd, 20G- Tim Bailey tuned
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#3 Old 08-14-2010, 01:40 PM
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Sounds like a leak to me. What kind of boost are you pushing? I have heard some of the IC gaskets blowing out around 20 psi. Do you have a boost guage?

How about your BOV, did you get a good seal around that when it was mounted? I would check all the clamps and what not. Looks like you have a FMIC so it may be the gasket at the turbo or a clamped joint.

I have a K&N Tyhpoon and the turbo sounds nothing like that....
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#4 Old 08-14-2010, 08:06 PM
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Quote:
Originally Posted by LewdWRX View Post
Sounds like a leak to me. What kind of boost are you pushing? I have heard some of the IC gaskets blowing out around 20 psi. Do you have a boost guage?

How about your BOV, did you get a good seal around that when it was mounted? I would check all the clamps and what not. Looks like you have a FMIC so it may be the gasket at the turbo or a clamped joint.

I have a K&N Tyhpoon and the turbo sounds nothing like that....
21ish pounds. i dont have a boost gauge, def need one though. i checked att the clamps and and seals and everything looks good as far as i can tell

turbo xs DP,turbo xs cai, turbo xs FMIC,3port BCS,walbro255 fp, spt catback, perrin BOV, 300ish whp
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#5 Old 08-14-2010, 09:14 PM
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I would consider having your system presure tested. You could listen for leaks without the sound of the engine.

I don't know what else it could be. It really sounds like high pressure air being forced out of a joint.

Let us know what you find.
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#6 Old 02-24-2011, 06:26 AM
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So did you ever figure out what it was making the sound?....I know its a old thread but my buddys car is doing the same thing and I was just curious to hear what you found out with yours.
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#7 Old 02-24-2011, 10:15 AM
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Seriously that sounds more like the transmission. I've only heard that when the car has been run really hard and the transmission oil is heated up. I would also have that checked or check it myself. I would completely steer you to the drivetrain though.

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