is an FPR necessary for aftermarket fuel rail and top feed injectors

[emperor_lunchbox]

I got some 450cc injectors from a GSX. I was wondering if an FPR is necessary in this set up. I will be getting the projectnissan.com rail and the JGS resistors. I read that I should get an aftermarket FRP, but is it necessary. Also how does an FPR compare to an FMU?

[Structure240sx]

i stock FPR will work fine

an FMU increases fuel pressure above what the FPR will. FPR's increase fuel pressure 1 psi or every psi of boost, making it a 1:1

Fmu's will increase 4,6,8,12 psi of fuel pressure for every psi of boost above what the stock fpr does

[Jookmasta]

i suggest getting an aftermarket fpr since it'll compliment the rail and allow u to mess with the fuel pressure. is it required? no. is it worth it? depends on who u ask or how ur tune is. as anthony said, stock fpr can also work.

[Structure240sx]

i have a nismo fpr that replaces the stock fpr on my jgy fuel rail. its basically just like stock but you can adjust the base pressure

[24DSXY1]

I got some 450cc injectors from a GSX. I was wondering if an FPR is necessary in this set up. I will be getting the projectnissan.com rail and the JGS resistors. I read that I should get an aftermarket FRP, but is it necessary. Also how does an FPR compare to an FMU?

Are you using this fuel system now cause I want to use the same set up but I don't know what else is needed besides the rail, inj, and resistors? Did the injectors fit well in the ka24de or did you have to modify anything?