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turbo now sounds like supercharger!!!!!!

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Old Jun 4, 2007, 06:51 PM
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turbo now sounds like supercharger!!!!!!

On saturday i was on a dirt road and bottomed out the car. Now when the turbo spools there is a very high piched sound, it sounds like a supercharger. What the hell did i do?! ANY input would be great. Thanks

EDIT: Note to all that have a similar problem. Throughout this thread I refered to my LICP, however my termonology was of. The "LICP" I refered to is actually the Turbo Outlet Pipe.

Last edited by PorkRoll; Jun 7, 2007 at 05:42 AM.
Old Jun 4, 2007, 06:56 PM
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Crushed IC pipe?
Old Jun 4, 2007, 06:56 PM
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Are you boosting the same amount? Maybe you knocked a pipe loose or have some other kind of leak?
Old Jun 4, 2007, 06:57 PM
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Check your intake for dirt, maybe some passed through and is lodged in the journal bearings in the turbo. I can't think of anything else...maybe exhaust leak too.
Old Jun 4, 2007, 07:00 PM
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I thought i might have knocked a IC pipe off also, i did a visual inspection and every thing seems ok. Im still seeing close to 20 psi which is where i was before. It sounds horrific. I will not bring the rpms over 2500 because the sound makes me sick to my stomach. Something sounds really wrong...
Old Jun 4, 2007, 07:01 PM
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How do you hold 20psi if you dont go over 2500rpm?
Old Jun 4, 2007, 07:03 PM
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I pulled through 3rd gear one time to see if i was holding boost.
Old Jun 4, 2007, 07:05 PM
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did you actually remove the bumper? if not u didnt do a visual inspection of the IC piping
Old Jun 4, 2007, 07:06 PM
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if its a high pitched whistle probably coming from the exhaust side...check the exhaust/downpipe maybe you tore a hole in it or something
Old Jun 4, 2007, 07:07 PM
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Could it be possible I broke the weld on the IC pipe attached to the turbo. Not sure of the name of it but it is part of the LICP

Last edited by PorkRoll; Jun 4, 2007 at 07:11 PM.
Old Jun 4, 2007, 07:09 PM
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I didnt pull the bumber off, however i had it up on a lift.
Old Jun 4, 2007, 07:13 PM
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You have a boost leak, probably your J-pipe. Good luck bro.
Old Jun 4, 2007, 07:13 PM
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sory man you cant possibly inspect it without the bumper off.... lift or no lift (unless u removed the plastic undertray which i dont see why since it takes less time to remove the bumper then the undertray)
Old Jun 4, 2007, 07:15 PM
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and you can still build boost with a boost leak ..... so remove bumper... carefully inspect damaged IC piping and let us know result.
Old Jun 4, 2007, 07:16 PM
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Bought the car w/o the undertray. And ill be working on it tomorrow. I just wanted to get some ideas before i got into it. I will post what i find tomorow.


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