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Fuel pressure regulator question

Old 06-07-2006, 05:04 PM
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Join Date: Aug 2005
Location: Merritt Island, Fl
My Boats: 1998 Donzi 22ZX 502
Posts: 242
Default Fuel pressure regulator question

I was wondering if any of you are using a rising rate fuel pressure regulator in a mild upgrade application. I am running a 502 mag mpi in a Donzi 22zx. The only engine upgrade is a pair of CMI tube tops. I run at sea level and am pretty sure that I am running lean. I don't want to screw up my low speed mixture but want some extra fuel pressure at medium and WOT conditions. I was planning on running a rising rate regulator in series with the factory reg. This will allow leaving the base idle setting at factory with the rising rate taking over when the curves cross.

I am also contemplating having the ECU flashed, but the idea of having that done several times to get it right does not sit well with me.

Any input would be appreciated,


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Old 06-07-2006, 07:09 PM
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Join Date: Jun 2004
Location: Frankenmuth
My Boats: EX 99 MPH 272 Baja owner, 1999 Scarab 33 AVS NOW
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Default Re: Fuel pressure regulator question

Cartech in texas makes one of the nicest rising rate regulators ive seen,I'm running a set-up exactly like what your talking about. I would belive however that one of the reputable efi re-programmers out there should have a efi program for a motor matching yours. I have had great luck with work Tyler Crockett has done,Smitty
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