vac pressure

[540James]

my vac pressure sits at 18-20, isnt it normally at 20-22? or is 18 normal? i do have a cai, fmic, turboback and bov....if those would make the vac pressure a little weaker? car doesnt stall at all. im running dual setup with bov/bpv. sometimes *(like once or twice a month) the car will drop to a few hundred rpms and pick itself back up, never stalls. thanks for input in advance

[540James]

my vac pressure sits at 18-20, isnt it normally at 20-22? or is 18 normal? i do have a cai, fmic, turboback and bov....if those would make the vac pressure a little weaker? car doesnt stall at all. im running dual setup with bov/bpv. sometimes *(like once or twice a month) the car will drop to a few hundred rpms and pick itself back up, never stalls. thanks for input in advance

?

[speedcicle]

Your vaccuum is normal 18 to 20 is good if it goes down to 15 or less you may have a leak. Otherwise the mods won't affect anything. As far as the rpm drop i get that to it's just an msp thing.

[metallargy]

It should be about 18-20 depending on elevation.

Stock, mine ran about 18-19.
However, after a 65mm TB, ported IM, engine management, and accompanying tuning (timing, etc) ... it raised to 20-22.

After cams, it went back to about 18.