lost boost/vacuum

[sprusak1]

I noticed on the way home the other night I dropped from 14/15#'s down to 11, and I'm only pulling 15#'s of vacuum. I checked and can't find any leaks, no belt slipping, and I marked the pulley to confirm it's not spinning on the snout. The boost bypass is pre loaded, and looks to be working correctly.

Any ideas?? I'm at a loss.

 

[03cobra#694]

Sure sounds like a vac leak.Did you check the lines on the back of the blower?I assume your using a aftermarket gauge.