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DW SD DW SD is offline
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Join Date: May 2004
Location: Encinitas (San Diego CA)
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Fuel delivery volume is a combination of fuel pressure and injector throughput. Injector throughput is determined by their sizing and amount of time that the nozzle is open. What size injectors (normally measure in lbs / hr.) do you have? Maybe the injectors cannot sustain the necessary loads?

Seems to me that every fuel injection brain must have some ability to tune or fine tune, but that if the injectors are tapped out at their capacity that this might be the issue.

What duty cycle are the injectors running above 3500 rpm and under load? You can measure duty cycle with most multimeters.

I'm pretty sure the factory FPRs are set around 37psi. The fact that yours is not maintaining this under load is also a concern.

Like MikeD said, I don't think you want to run two FPRs.

Doug
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1971 RSR - interpretation
Old 05-21-2008, 09:08 AM
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