Low PSI at idle

[90DSMTurboFWD]

I think I have around -7 to -12 PSI when it is idling normaly and sometime -18 to -20 between shifts or after boosting. I heard it should be like -18 to -20 at idle and -25 after boosting. Do I have a problem or is this normal. Also could it be a possible vacuum leak?

 

[Enigma_Man]

It very well could be a vacuum leak. Why don't you build yourself a $2 intake leak tester, and find out?

My numbers are about what you said, I get about 17 MMHg at idle, and 25 MMHg on hard engine braking.

-Jes