| I was wondering if any of you had any ideas. At this juncture I do not hear of any vacuum leaks. Did a search already but no mention of whether IAC is linked to lowered boost. Could installing the IAC back and having the unit not being tightened fully with the four bolts cause the drop in psi? After cleaning the IAC unit I replaced the gasket for it as well so there's a new gasket. During the removal of the IAC I know there are many lines back there...but I made sure none were disturbed to the point of falling off... Thanks in advance... Jack.
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