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Engine/Power - EJ20T (pre-2006 WRX and JDM) There is replacement for displacement, it is forced induction - OEM 2.0 liter turbo engines in the USDM WRX. 90-94 Legacy Turbo EJ22 turbo engines can also be discussed here.

Surge or flutter?

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Old Feb 29, 2004 | 07:05 PM
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mike626
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Joined: Feb 2003
Posts: 480
From: Rosemead
Car Info: 2003 WRX
Surge or flutter?
Is there a way I can tell if the weird noise I am hearing after i release the gas if it's compressor surge or wastegate flutter? I just have a BOV going at 50/50.
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Old Mar 1, 2004 | 10:49 AM
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ride5000
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Joined: Feb 2003
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From: 12.9 / 105+
Car Info: black my03 5mt wrx s/w
noise after the throttle closes = surge.

noise while the throttle is open = wg flutter.

hth
ken
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