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(formerly) 03 H6 OBW , (presently) 06 WRX Sportwagon & 2021 Honda CR-V
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maybe check fuel pressure/change fuel filter?

3 sources for a whistle at high speed I can think of; tabs at bottom of intake filter box not seated, exhaust leak, windshield wiper blades.
 

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Discussion Starter · #22 ·
maybe check fuel pressure/change fuel filter?

3 sources for a whistle at high speed I can think of; tabs at bottom of intake filter box not seated, exhaust leak, windshield wiper blades.
Fuel pressure......we just installed a new fuel pump and filter so I don't think that is it and this has been ever since we got it. Almost makes you think it has a turbo........and the sound is definitely coming from the motor.
 
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