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boost problem

  1. 2005 Saab 9-5 Aero Boost Problems.

    9-5 Workshop
    I have a 2005 Saab 9-5 Aero and I am experiencing boost problems. The turbo is spooling up fine and goes slightly into the red at first. The gauge will then fluctuate up and down at the end of the yellow area. Although the gauge is reading i'm getting full boost (for the most part) there is...
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