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Message: <blockquote data-quote="Ronin" data-source="post: 1131162" data-attributes="member: 12714"><p>P1SC with a pulley rated for 8 PSI. Normally, if I get on it in 1st, it'll hit 5-8 PSI pretty quickly and climb a bit.  Rest of the gears it'll hit about 4-5 PSI instantly and climb slowly.  I haven't been driving it hard much for quite a while, and so haven't been watching the gauges much.  I noticed a few things today.  It's sitting around -25 vacuum when not under load (seems to me it used to be about -20).  Then in any gear, it was showing hardly any boost at all.  so I decided to get on it from first.  It hits 0 instantly, then slowly climbs to about 5 before I run out of RPM. My butt says it doesn't feel any weaker, and I can clearly hear the purge valve doing it's thing when I shift after a hard run, what's going on?</p></blockquote><p></p>