I'm having a problem with this Autometer mechanical boost gauge. I connected it before the check valve on the plenum. Under normal driving the gauge reads 2psi of vacuum. When I floor it , the max boost it reads is 2psi. It never goes past 2psi boost no matter how hard I step on the gas or what RPM I am at. Ex: It reads 2psi of boost at 3000RPMS, and 2psi at 5000RPMS. I know I have to be making more than 2pounds of boost. ..The guy who had the supercharger before me had same mods as me and was making 10#s on a 91 305 TPI with slp performance package.

Any ideas?

------------------
91 Formula
305 TPI 5speed
1LE/G92/WS6

Paxton 10# SN92 polished kit, Ford SVO 24#injectors, Crane AFPR,SLP airfoil, ported/polished plenum, March alt. pulley,Crane Gold 1.6rrs,MSD coil,MSD6AL (5400rpm limit),Holley 9mm wires,Ac delco R43ts plugs,stock chip,Bosch O2sensor,SLP 1 5/8" headers,SLP catback,shortened shifter,3:73s w/Auburn posi,180* t-stat,JET 195* fan switch, Macewen white face gauges, Autometer gauges, Zoom hi-performance clutch.