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Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

engine knock w/ intake

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Old May 31, 2004 | 04:48 PM
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STi-LLlegal
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From: Ewa
Car Info: DGM 2011 WRX Hatch
engine knock w/ intake
I installed the Power Enterprise short ram intake and am experiencing knocking sounds from the engine whenever I let off the gas on boost. The knock only occurs when I let off the gas and not when accelerating. Anybody with similar problems or solutions? for a pic of intake ---

http://www.fastwrx.com/poeninsy.html
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Old Jun 4, 2004 | 05:27 AM
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mw1029h
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Car Info: 04 STi blk cloaked team blew member
sounds like the intake is not secure
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Old Jun 8, 2004 | 03:37 PM
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4evo2nv
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sounds like waste gate flutter
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Old Jun 13, 2004 | 06:44 PM
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whoosh
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detonation sounds like bbs in tin can, and happens at the cusp of when the turbo hits
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