What is you alls boost gauge reading at idle?

 

Should be about 18" of vacuum, steady.

 

You shouldn't have any boost pressure at idle. Your bypass valve would be open at that point.

 

At 600 feet above sea level, I see about 20 - 21" vac.

 

mine sits at like-18 at idle

 

X2

 

around 18 vacuum

 

I ask, because on my interceptor gauge it reads -8psi, is that normal?

 

About 20" of vacuum for me.

And it reads -8psi because it is trying to read vacuum. Don't know if the Interceptor has the ability to display vacuum or not.

 

same here, i'm at about -9psi on the interceptor and when i downshift it jumps to -11psi, but no higher really.

 

right around 20 in vac.

 

-60 kpa

 

So it's normal then to see 8psi at idle on a interceptor?

 

Where did you get 8 from?

 

Oops. i mean -8.

 

yes^^

 

Isn't the ratio for the conversion 2.4XXX something or other. As in -8psi would be around 19 or 20" of vac. Damn it, can't remember and I'm too lazy to search for it.

 

My interceptor shows between -20 and -22 when I am engine braking, about -18 to -20 when I am stopped, dead idle.

 

What measurements are you going with, percentages? i did port and polish my supercharger housing, i dunno if that would effect mine at all. I still see about 15psi max with my mods. Vaccuum is about 14.7 psi so i guess seeing around -9 psi to -11 psi would be normal, because it wouldn't be FULL vacuum, just close. also -9 psi = -62 kpa