I am getting everything ready for when the turbo arrives and I am in the fuel matter right now..
I have been reading about dual 255's.. But a 400lph isnt enough? Or why is not more people using it?? Or what fuel pump should I buy?
I think i'll go with 80lbs injectors..
Aiming for over 600rwhp..
Thanks!!

 

I just put a walbrow 450 in my truck before I sold it worked great!

 

I am running a walbro 400 on 10psi right now. Granted I am under turboed and don't spin that many rpms.

 

Do I need a FPR to set it up or do I just replace my existing walbro 255 for the 400??
Thanks!!

 

A 400 should be enough. I'm running a 255 right now on the stock wiring and it's been fine up to ~13psi, granted I have a return system and am injecting methanol. However I do think it's just about maxed out. Next step will be to upgrade the wiring and install a 400.

 

Is there a lot of wiring to upgrade?

 

id run a relay to the pumps, helps them keep 12v consistent . Im going to be running 2 255, one on stock wiring with relay added and other on a hob switch where it only turns on above 3-4lbs of boost

 

do you do the relay in conjunction with a hot wire?

anyone have a "diagram" of such a setup?

 

just standard relay
12v wire from battery to relay
ground wire for relay
wire from relay to fuel pump
wire from factory harness to relay

 

And a fuse somewhere in there