c-murder

Ok, I just ordered a set of 555cc Nismo injectors, all i hear is great stuff about them. My question is (not the common question, "HOw much HP am i making about?") How much can i safely boost with my new injectors? I want to know about where to set my high boost setting on my boost controller. I quick list of my mods are:
HKS Hi-power exhaust
JWT single Pop intake
Z1 Chipped ECU
Z1 525 Turbos
HKS 2.5 inch down pipes

Riz Z Speed

the 555 injectors aren't going to be your limiting factor.
the 555 injectors will take all the boost that those turbos will be able to handle. Rechipping of your ECU will be necessary.

c-murder

I got that done too, by Z1............

NismoPick

How much boost you can run really depends on how built your engine is. If it's stock, it's not going to withstand as much as a hard core built one. With 555cc injectors, you'll prolly blow a gasket before running out of fuel.

c-murder

I know thats why i like to know, what a safe Boost level is........ I dont want to blow my Motor...

entropy31

if you want a definate answer then go with 2psi. thats a safe level.

try turning it up till it pings and then backing off a few psi.

NismoPick

Oh... the joys of using ASK JEEVES:

READ THIS FIRST:
http://www.zcar.com/forums/read.php?...29059&t=129059

http://zhome.com/rnt/DonnVBolton.html

http://www.sportcompactcarweb.com/pr...scc_proj300zx/

Read those.

ZLover4Life

17/18psi (I do that daily with my 555's)... your intercoolers become your limiting factor. Get aftermarket intercoolers and you can boost a little more on pump fuel, a little more than that on race fuel.