i have a greddy turbo kit on my 99 civic si
im using a vortec fmu with the missing link

my question is do i need bigger injectors and a bigger fuel pump? this is my first turbo so im really noob

thanks so much in advance

 

Ive never had a turbo myself but i would think larger injectors fwould be neccesary.

 

i wanna be sure tho

 

Yes you need bigger injectors. DO NOT be cheap with your fuel management or you'll be buying a new motor.

 

And some injectors you can find them cheap as about 75 bucks.
You need engine management to run the bigger injectors
Get a chipped ecu to run crome/neptune/uber.

The fmu just raisier your fuel pressure by the pound. If you have the 12:1 disc
At ten pounds it is forcing fuel through each injector pulse at 165psi.
10 pounds of boost x 12psi for each pound=
120fuel psi + stock fuel psi 45 =165psi in your fuel line.

 

Why are you running an fmu??
Greddy kits are supposed to have an emanagement system(blue box) that is a piggy back type of fuel management able to control injectors. Not the best but good up to about 13/15psi of boost

 

FMU + Missing link + no tuning = shitty setup.

You're going to end up with issues over this. If you can't afford some better kind of engine management, boost may not be for you.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by del sol1658 &raquo;</TD></TR><TR><TD CLASS="quote">Yes you need bigger injectors. DO NOT be cheap with your fuel management or you'll be buying a new motor. </TD></TR></TABLE>

At least, pull the pump now and swap it for a larger pump. Now you can sell ur current pump while it's good, because if you leave it in there the fuel is in high demand for what it can do and you'll kill the pump in a month or two (maybe longer...maybe sooner). Injectors need to be larger as well.

Just out of curiosity, how much psi you running?

If you're only running like 3lbs untuned I wouldn't say you need it but I doubt you're running that.

BTW: Next time you have a question like this shuffle on over to the forced induction forum. Seeing as they all deal with forced induction they'd be able to help you a lot more readily.