starrman

I have my AEM digital boost gauge hooked up directly to the intake manifold, it only reads vacuum, and when in boost, it goes to zero and stops. I tested the gauge with a tire pump and it will show boost. Is this just a bad place to hook it up? Suggestions please!

Arrow pointing to vacuum line to gauge:

camuman

U sure your actually building boost? That place is fine to read boost.

starrman

Well I cant prove it, since the gauge won't work, but the butt dyno says yes.

Suzuka_Joe

boost leaks?

starrman

checked, cant find any...had one at the aftercooler...but fixed that.

GO-AUTOWORKS

That source will work to feed a gauge. Are your datalogues reflecting any boost?

starrman

I am taking to tuner on Wednesday, will find out then. Thanks for all the help.

steven975

what happens if you blow into the hose connected to the gauge?

I can make 2psi doing that.

starrman

I used a tire pump and created 18psi.
OK, so now I am thinking I have a leak, but there are only 2 places for a SC to leak, from blower to aftercooler, and from after cooler to throttle body/intake... and everything is tight as can be? Am I missing something?

icemans2k02

Belt slpping maybe? Even then I would think you would make SOME boost.