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Old 02-04-2013, 11:42 PM   #1
BrkngBnjmnFan
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Member#: 330971
Join Date: Sep 2012
Location: Oklahoma City, Ok
Vehicle:
2005 STi
CGM

Default Boost leak? Turbo problems?

Having problems with my STi. My radiator cracked on me last week and instead of changing it myself I had the dealership where I bought it change it for me because I needed my car back ASAP. I got it back Thursday night and literally as soon as I started driving it the car was making a loud noise that it definitely wasn't making before I had it dropped off or before my radiator cracked. The best way I can describe the sound it's making is the sound of air being sucked in. I start hearing it when the turbo starts to spool up and then it continues when the turbo starts to spool down. Now at first I thought it might be a boost leak, so me and my buddy checked for one using a spray bottle and soap but couldn't find one. So now I'm thinking something might be wrong with my turbo. Only thing is I had my buddy stand outside while I'd drive by so he could hear it better, and he said it sounds like noise is coming from the driver's side and not the passenger's where the turbo is. When I'm in the car and driving it sounds more like it's coming from the right side, but I had him drive it and me stand outside while he drove by and it he's right, it sounds more like it's cooming from the driver's side. So I'm a little stumped as to what the problem I'm having actually is. I'm new to the Subbie world, so any help would be appreciated. And just so no one has to ask, I'm still running the stock VF39, only mods that I know of are an exhaust and a downpipe, and while I believe it has a tune on it, I don't know for sure. Since I got the car back Thursday night I haven't noticed a dropped in power at all once I get into boost either, even though I haven't really been WOT or anything since then except for one time for just a few seconds and it seemed fine. I don't have a boost gauge hooked up yet either so I'm not sure what my PSI is. Thanks
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Old 02-05-2013, 08:07 AM   #2
MtnXfreeride
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Old 02-05-2013, 10:08 AM   #3
BrkngBnjmnFan
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Join Date: Sep 2012
Location: Oklahoma City, Ok
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2005 STi
CGM

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Originally Posted by MtnXfreeride View Post
Kinda yea. My noise seems to sound a little louder though, and I hear less of a whine/whistling sound and more of an air being sucked in sound. There's definitely some similarities though. I contacted an actual Subaru dealership this morning and the technician seemed to think that if I'm not noticing any power loss when I hit boost that it may be the inlet hose.
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