fuel pressure

[vortecfiero]

i was wondering if 10 psig of manifold pressure lowers the pressure/output at the injector tip by 10 psi ? :roll:

 

[smeagol]

Yes, which is why most turbo apps use a boost sensitive fuel pressure regulator.

Syty regulator is 43.5psi referenced to atmosphere. At 10psi of boost, fuel pressure is 53.5psi. Also, at 5psi of vacuum, you will have 38.5psi of fuel pressure.

 

[vortecfiero]

thanks brian, once again you have come threw.

 

[vortecfiero]

that seems to be 1:1, so i guess a "fuel pressure riser" can increase at a different ratio.............