Fuel pressure inquiry

[RYDRZ]

Meanwhile
Back in the hands of damien at raceway suzuki

Both grant & damein swaped fuel pumps, 3 in total

1-Original -133,ooo old

2nd- hand from vic wrekers$225.ooo (cost)
Kilometers unkown

3rd -Another busa tank + fuel pump...

They found the same system behaviour

In normal mode 40psi no load on the engine

Still in ' 1st the gear @ 9000rpm

Fuel pressure droped from 40-35-33psi

They firstly figgered my pump pressure

So i bought another from the wrekers

Same symtoms with that fuel pump

They tried another complete tank /from an 03
Model -same symtoms

So how do I get & keep fuel pressure at
40psi

New pump $990.oo
Or an addative of fuel pump pressure
Regulator,

So how do u turbo guys solve this issue

When then engine requires fuel-supply n demand

Where do i start ..????

Maj, are u listening ,is a fic modul needed

???