Runn

Whats the stock fuel pressure on a 98?

Matt@HSW

iTrader: (14)

Usually around 57 - 58 ish psi.

matt

Runn

How big injectors is possible to run with stock pump?

oange ss

iTrader: (50)

hp is the limiting factor on a stock pump not injector size

Runn

But there have to be a limit to the injector size right? When the pump can run them at 100% anymore....

oange ss

iTrader: (50)

not really, pump has nothing to do with injector size, the pump is there to meet the fuel consumption of the engine , the VCM controls injector duty cycle depending on fueling needs and of course fueling needs can surpass the safe operating limit for injector size

hawaiiboysz

iTrader: (4)

So there is no need to upgrade the pump then? Just injectors So when would you need a pump?

oange ss

iTrader: (50)

an upgraded pump is always a good idea, but you really wont need one till around 450 rwhp, the 01-02 injectors are good for about the same power range, the 98-00 cars will need to upgrade injectors around 400-420 rwhp

slmdLS1

iTrader: (8)

44psi too low or is that "within a safe range" ?

oange ss

iTrader: (50)

too low

Matt@HSW

iTrader: (14)

Too low.

Matt

slmdLS1

iTrader: (8)

got it up to 58psi constant.