vac pressure?

[backinblackgtp]

anyone know what normal vac psi is on a gtp?

[rolyat]

My car pulls about 20 in-hg. I think 17 to 20ish is about what you can expect.
Now psi is a different story, thats referring to boost which is about 7 to 8 on a stock pulley.

[Bio248]

when at idle (full vacuum) you should be in between 15 and 20 in. hg.

my car ran like crap, so i usually only saw 14.

[backinblackgtp]

ok cool, ya im about 18-19 psi at idle and 7-8 psi boost at wot, thanks