im going to be running fmu, and with a 7 or 8 psi wastegate spring, im changing fuel pump, and getting fpr do i really need to change injectors , or is it something it can be done later on, oh btw the motor is a b18c(jdm gsr)

 

you cant use bigger injectors with an fmu, cause you need something to control them at idel

 

fmu is vaccum driven as soon as the intake sees boost it dumps in fuel 12 psi per 1 pound of boost, its gonna be rich as it is with stock injectors.

 

so is it 100% safe to run stock injectors under 10 psi?

 

i wouldnt run 2 psi with an FMU personally. but i wouldnt push it to 10 esp with a higher comp JDM motor

 

well im going to run 7 psi.