Where do you hook it up so that you can read both vacuum and boost? Right now I have it hooked at the outlet of my supercharger, reading only boost.
Moderator
Anywhere below the throttle blades.
I've tried it about 6in in front of the blades and still no vacuum. With the supercharger on, I think it will not show any vacuum.
Moderator
"Below" is "behind", not "in front of. You need to measure the pressure in the manifold, which means having the throttle between the gauge and the supercharger.
Alright, I 'll have to try again later. I'll post if it still doesn't work.
Quote:
Originally Posted by Apeiron
"Below" is "behind", not "in front of. You need to measure the pressure in the manifold, which means having the throttle between the gauge and the supercharger.