Boost of wg is 6psi. My other upgrade is the typical bolt on - 2.5 hardpide, 26x13x3 spearco style ic, HKS ssqv bov with stock bov , K&n, defcon downpipe, 3" test pipe and Hks drager. I need to pressure test my car looking for boost leak. My lowest afr is 12.3 at 13 psi with lex afm/ 550.