I am only able to run up to 1 or 2 psi!!! I need some wisdom so hook me up PLEASE... other details: the stock BOV is not on the car... set is a Greddy type S BOV and 2 large sized stub bolts that block the path of where the stock BOV used to flow air back into the accordian hose. Has a rather large downpipe leak but I dont think that involves the low bosst problem. Also has a Turbo XS manual bc and i even tried to tune it up, but still... very low boost. Just throw whatever at me and Ill try something out.