you need a fuel pump DEF. but as for the injectors and everything else.. you'll be straitas long as your boostin 7psi. if your getting it tuned soon after your kit goes on, you wont need the FMU but if your gonna wait get it. without the FMU you wount be able to hit boost and vtec at the same time.. i learned that one wen i got boost on my y8.. G/L with the build.. got any random questions.. pm me, ill help ya out