Question about 1994 Subaru Legacy Outdoor

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Boost spiking/ over boosting

Hay i have a 1994 subaru legacy wagon and its over boosting or spiking its runing 15 pound on first turbo and up to 20 on the second turbo how do i turn it down? it dosnt haver boost tap eather its all stock staned

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My legacy shutters befor boost and then boosts to 15 on my boost gage

Posted on Jan 10, 2014

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Replace the wastegate vacum lines or wastegate acuator. if they leak it raises the boost. Let me know if its not that.

Posted on Jan 12, 2009

  • shane bland Aug 21, 2013

    ic checkecd all my vacuum lines and it still boosts 10-10 and feels likes its holding back. im thinking its a dud top mount piping. im replacing tonight

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SOURCE: 1994 subaru legacy

Try Upper engine cleaner from Surabu first..............if that doen't sort it try cleaning the IACV (idle air control valve) with carby cleaner and/or meths

Posted on Nov 07, 2008

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Posted on Jan 02, 2017

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Try Upper engine cleaner from Surabu first..............if that doen't sort it try cleaning the IACV (idle air control valve) with carby cleaner and/or meths

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Check all the rubber hoses to and from the inner cooler for cracks, make sure all the clamps are tight.

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