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2004 Subaru WRX whooshing sound

Tiny
TRAILPRIDE
  • MEMBER
  • 2004 SUBARU WRX
  • 4 CYL
  • AWD
  • MANUAL
  • 23,000 MILES
When turbo usually kicks in, the engine makes a very audible whooshing sound and wont rev up any higher and actually loses power. The boost gauge drops when this happens. It doesn't do this when the car is stationary. The car is completly stock and it's my sons car, trying to help him out! Thanks in advance, any help much appreciated.
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Monday, January 4th, 2010 AT 10:13 PM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
The compressor bypass or "blow off valve" may be opening prematurely, releasing boost pressure.

I would also check hose connections from compressor outlet to intake for any leaks/loose clamps.
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Wednesday, January 6th, 2010 AT 6:53 AM

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