fuel pressure regulator

[ovillems3]

Im thinking of installing the greddy profec b spec 2.
Can someone please explain where the fuel pressure regulator is located?

thanks.

[nig3]

dont think the ms3 has a normal regulator. it has an in tank pump that send fuel to another fuel pump driven by the cam gear and then converts to a million psi or somthing. good luck figuring out what to do with that one.

[Haltech]

Why do you need to know where the FP reg is?

[shaodome]

Probably because on cars with a return line fuel system have a good signal source for manifold pressure there.

[whooosh]

Im thinking of installing the greddy profec b spec 2.
Can someone please explain where the fuel pressure regulator is located?

thanks.

in the tank as part of the fuel bucket assembly
non-adjustable type and is set at a constant pressure up to the cam driven high pressure pump
it is not a rising rate regulator based on manifold pressure as most other port fuel injection turbo arrangements when the regulator is in the engine bay

[itzl0l]

Probably because on cars with a return line fuel system have a good signal source for manifold pressure there.


this isnt an srt4

[shaodome]

this isnt an srt4

You don't say...? (headshake Re-read what I said...

He was asking why he would need a pressure source with a PROFEC B s2 install, and in their manual it states an ideal place is the FPR signal source. This is so because on a port injection vehicle the amount of flow at the injector nozzle is directly affected by manifold pressure (hence the 1:1 ratio). That will ONLY apply to vehicles with a return line to the tank....aka not US, RSX, and many of the new vehicles because the PCM controls the fuel pressure via PWM.