Ive got my sn92 installed and rotateing Clockwise ( looking from the pulleyside to the backside of the unit)OK, heres the question, these a small port on the top side of the unit, right above the outlet of the blower, I attached a gauge to this port and at Idle I have about 12 inchs vaccum, but at no point in RPM Does this port get boosted to anything in the positve pressure range. Now with that said, at about 4500 rpm I have 15inchs vaccum , and at 5200 rpm vaccum drops to 10 inches. This isnt BOOST is it??I think I should see a positive number here,am I wrong?? If Iam not wrong whats wrong? There are no noises, vibration, nothing that indicates that something is wrong....:(
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