So i have a 97 305 vortec that I replaced spider injectors on and i never bothered to check the intake manifold pressure prior to install. So after i checked it with one of those fixd scanners and map is reading 4psi at idle which from my experience is way too low. Replaced map and nothing changed. Took upper intake back off and cleaned everything and reinstalled gaskets and now its still at 4psi. I dont hear a leak and i took the brake booster hose off and it seemed to suck like a mf and revved all the way up and almost stalled when i put it back on the booster. So it doesn’t look too me like there is a leak or poor vacuum, does anyone know wtf im dealing with? I can send videos of engine running and exhaust but im not really sure how to do that so ill post pics of the live data