Alright, so I got my boost gauge hooked up, at idle it reads I guess -20...I have boost set to run 8psi, but when I get on it, it never goes that high. Is it normal to read -20?

Also, where do yall tap in, to get boost gauge readings, map readings, and for BOV's?

Any help would be awsome, THanks

 

20 inHg isn't unusual

 

What do you mean?

Like, take a normal boost gauge, goes from 40 to 0, then 0 to 40 clockwise around the gauge. Its reading the bottom 20 at idle, slowly goes up when hitting throttle, but it doesnt go over the 0, is that normal? do i have a vac leak? and does my altitude matter where I live?

Also, im still trying to find a good vacuum source for it..there is a hose coming out of the top part of the motor, on the passenger side, its a short5inch hose, goes into this short round, plastic thing, then back into a vac hose, and carries on....

 

It's normal on a naturally aspirated car.

 

Well its turbo now, if that matters

 

If it is, you haven't got any boost.

 

What should it be at, at just idle with a turbo?

 

The same as it would be at idle without a turbo.

 

It should go to zero at WOT, and then up with boost. And make sure you are connected to a manifold vacuum source, as in from the intake plenum. Such as the one that goes to the brake booster, etc.