Carb cleaner not needed. I ran and actual vacuum gauge all the way through. Got 19 inches from front to back on the vacuum system. Carb cleaner's the shade tree way.
There is a gizmo that is between the FPR (which gets vacuum from the manifold) and the actuator for something on the inlet of the supercharger (probably to allow vacuum when the charger is under boost). That little gizmo connects the two sources of vacuum, the inlet of the charger and the manifold. When under boost the line out of the rear of the supercharger is under 5psi pressure, cause it's in boost. Just verified it with a guage. The one on the charger inlet is still under vacuum, again verified with a gauge.
Should the manifold vacuum port have a one way valve that will only allow vacumm and not pressure on it? That would seem logical. Hard to run vacuum stuff under pressure. I might try a bypass for the FPR and see what that does.
