what does your VAFC read for vacuum (in psi preferrably) at idle?

 

It depends on the cam used and cam phasing.

A stock GS-R will pull -530 to -535mmHg.

My car with CTR cams pulled -520 to -525mmHg with the camgears zero'd out, and around -500mmHg at +2 IN and -2EX.

Then with Skunk2 Stage 1 cams, it pulled -520 to -535mmHg with the camgears zero'd out.

 

ill have to go set mine to mmhg to see what that means, all i know is mine reads around -11psi at idle (ls/vtec with stock gsr head), and i think thats a little high. shouldt it be around -17psi?

 

I think that's normal. I don't know if my conversion factors are right, but I got 10.2psi for 530mmHg.

 

cool. thanks for the info.