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Old 03-10-2008, 05:38 PM
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4.0 fuel pressure?

I need to get a fuel pressure regulator with boost reference. But I have to find the right one. Does anyone know the factory fuel pressure for an '03 4.0?
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Old 03-11-2008, 11:54 PM
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Re: 4.0 fuel pressure?

Something like this!!!!
HKS USA Adjustable Fuel Pressure Regulator

Standard around 33 psi

Last edited by RBLUE; 03-12-2008 at 12:54 AM.
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Old 03-12-2008, 10:01 PM
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Re: 4.0 fuel pressure?

I need one with boost refrence, That one only does vaccumm. I have one in mind but the range is from 36-47psi
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