expirement with different areas on the intake manifold to see if any offer a greater reading of vacuum compared to others. this is often the case, praticularely vacuum ports on or near the throttle body typically show lower vaccum. some of them are purposely made that way. my car has one such fitting.
if you do find that some fittings on the intake show greater or lesser vacuum readings, then chose the one which shows the greatest amount of vacuum on the gauge. usually just having the car idling is sifficent to test the different intake manifold vacuum fittings.
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96 stratus "es" v6 auto-stick
supplementary propane injection
injector kill switch, alternator kill switch
Charging system voltage increased to 15.5V
secondary and tertiary 12v batteries in the trunk
on-board battery charger
lights converted to led's
potentiometer controlled tps for ign timing
welded straight pipe in place of cat-cons
removed egr
3 inch body drop
90psi fuel rail & -50% low volume injectors
run 15% diesel 85% gas
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