e38 return fuel system tuning ( not a fpcm car )

[Maxspeed96ct]

e38 pontiac g8 ( not a fpcm car )

I know I have to set the IFR to one number across

But i'm reading mixed opinions on changing the Voltage offsets for pressure and voltage.

do these need to be one number as well? the voltage i think I could leave but im not sure

[07GTS]

return or not dosnt change anything, its only if the fuel pressure is regulated to manifold pressure/vacuum, if pressure is constant 58psi then leave it like stock, if your regulator has manifold pressure controlling it only then u have to make changes