loss of boost and vacuum - The Saab Link Forums

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Performance Modifications for the NG900 / Old 9-3 This forum contains PERFORMANCE related Q&A's for the NG900 and 9-3. This may also include suspension.

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Old 05-01-2008, 06:26 PM   #1
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loss of boost and vacuum

i noticed a boost leak or loss of boost about 2 weeks ago and gotta get a new air compressor to pressure the system, but i am also noticing less vacuum than before. i used to idle at about 17 in hg and under deceleration 21-22 in hg but now im seeing 13 idle 16 decel. i put silicone hoses on about a year ago and a quick visual today and i couldnt find the culprit. any ideas?

oh yeah, and its only boosting about 17 psi where it used to be about 24 (i dont get on it now knowing its not boosting right)

Last edited by sleet; 05-01-2008 at 06:32 PM.
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Old 05-01-2008, 07:50 PM   #2
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sounds like a leak some where. check everything twice!
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Old 05-03-2008, 09:25 PM   #3
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