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NORMAL Merc EFI pressure ????

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Old 08-26-2002, 12:55 PM
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Default NORMAL Merc EFI pressure ????

What is Mercury's normal fuel pressure for a '97 454 MPI MAG????

I found somewhere that it was 36-37# minimum, but Procharger say it is 25-28# ( 30 max)

What is correct!!!!!??????
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Old 08-26-2002, 08:21 PM
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If you have "Cool Fuel"...

There are two ways of identifying each regulator by looking at them. By a colored paint mark on its' mounting flange and a small ring that is on the regulator's hose fitting.

43 psi if the:
Paint Mark: Blue
Ring on Regulator's Hose Fitting: Green

36 psi if the:
Paint Mark: Yellow and Orange
Ring on Regulator's Hose Fitting: Black

Regards,
SG
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Old 08-27-2002, 07:11 AM
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What about a VST 454 MAG EFI?
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Old 08-27-2002, 12:12 PM
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Thanks, Speed girl !! I called Procharger & they said 22-25#, Merc Racing said 37#, Aeromotive said 40 #or more! ??????

I do not have a regulator as mentioned, This is a regulator provided by Procharger, large, red anodized billet regulator. one port in- 3 out + return .
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