i wanna run an fmu for now till i can afford neptune. Do i need to run a inline fuel pump or is a 255 walboro fuel pump fine??? im runnin a ls motor in a ek coupe. and is 5 to 7 psi saf it a fmu?? wit stock injectors???

 

With stock injectors you'll need the fuel pump for sure. If it was me, I'll wait until I have everything togather before putting anything in the car. Be patient and good things will come.

 

but will it be sufficient or should i put some 450 dsm injectors toooo??

 

you can't run dsm 450's with just an fmu. you need a chip or management to run them properly. there is a site i got my ecu chipped with cromepro basemap to run my 550's, after that you can ditch the fmu, and yes you will need a fuel pump. the 255lph will do just fine.