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Turbo M52 Issue, Too Much Fuel Pressure

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    Turbo M52 Issue, Too Much Fuel Pressure

    Hello!

    I've been trying to figure this out all week. We finished my E30 m52 turbo project mostly, with a tune and all but the only issue is the fuel pressure is too high. It is currently at 55psi at idle when it should be 43.75 or so. We are using the obd 1 intake manifold and fuel rail with the fuel pressure regulator on the rail.

    The vacuum line to the regulator is hooked up to the manifold without any tees or anything.

    Does anyone have any clue about why this would be happening?

    I am considering buying an aftermarket fuel pressure regulator but I have no clue how to install one on an obd1 fuel rail.

    #2
    does it change when you remove vac line?

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