needhelp im lost

Happy to hear you found many of the problems. Not quite sure I understand your vacuum question, but think this is the answer.....You need to find out how many inches of vacuum you are pulling, at idle and in gear, if you have an automatic. If you are pulling 10 inches, divide that in half and your PV's should be in the 5 psi range. I am not real familiar with the 450 cfm units, but should only have a primary PV and no metering block on the secondaries.