i have a jdm b16 turbo i am running 5psi was thinking of going to 7psi. i have a 255 fuel pump, aem fuel rail, nrg f/p/r, prelude injectors, and 12:1 fmu, i have not tuned yet do you think that i will be ok running 7psi.

 

i would say yes, but you are on borrowed time with the fmu when you increase the boost. just my o.o2.

99lspwr will tell you different. he is a certified inline pump/fmu/btm tuner. he is running 13 or 15 psi on an fmu and it is working. but he also has something to knock the timming back.