3 bar fuel pressure regulator

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11-11-2008, 12:49 PM

#31

James B.

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Quote:

Originally Posted by PSM

They new ZR-1 uses 48 lb/hr injectors and goes from 36psi at idle to 87psi at higher rpms

That is interesting to know, it would mean for the LS9 and LSA GM went back to a return-style vacuum referenced fuel pressure regulator. I would think that would be a prerequisite for boost, make sense.

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11-11-2008, 01:21 PM

#32

thunder550

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Quote:

Originally Posted by dewmanshu

I am quiet surprised thunder you hadn't locked onto this much earlier. I have always contemplated doing it just see if the moto 60's were any easier to idle tune.

I had a couple of people suggest it, but had never heard any reasoning for or against it. I generally don't change anything unless either I or someone else can explain the justification behind it.

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11-11-2008, 03:09 PM

#33

64CAMINO

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No, they are returnless still. The computer ramps the pump voltage with rpm.

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11-11-2008, 09:53 PM

#34

phasemaster1

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Quote:

Originally Posted by PSM

They new ZR-1 uses 48 lb/hr injectors and goes from 36psi at idle to 87psi at higher rpms

wonder if their using a fmu of some sort like procharger all it does is increase fuel psi.

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11-11-2008, 11:42 PM

#35

James B.

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Bizzare. Now that you mention PCM control, I recall a similar system for the E85 5.3L LMG engine. There's a guy, pswired, over at the PPE Forum I help moderate that's installed a LMG into a '95 Yukon originally equipped with a LO5 TBI 350. He had to overcome some compatibility issues.

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