Hey everybody. I just traded my procharger f1a setup for a kenne bell 2.6 etc. The former owner said he made 18 psi with a 3.75 pulley and stock sized metro lower however most of what I've read indicates less psi than 18 with a stock lower. Does this seem accurate? Being that I have 10:1 cr, huge cams and full exhaust I'm starting to think I need a much smaller pulley to achieve 17-18 psi on pump 93. Thanks for any insight.