Fuel Pressure - Ford Powerstroke Diesel Forum
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Old 09-10-2007, 04:52 PM
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Fuel Pressure

I have heard of people on this site claiming they have added psi to thier fuel system by adding a fuel regulator? How is this possible and how can I increase mine without going broke!
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Old 09-10-2007, 05:06 PM
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Are you possibly talking about people "shimming" the fuel pressure regulator to up the fuel pressure to about 75 psi??
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Old 09-10-2007, 05:07 PM
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How do you shimm your fuel regulator?
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Old 09-11-2007, 09:32 AM
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Without major mods increasing the fuel pressure will do very little for performance. When your pressures drop because of large injectors an increase in volume and pressure will help feed them.

Now the addition of a regulated return such as ITP's kit will smooth out and help even a stock engine because it eliminates the "Dead head" issue and trapped air in the fuel system.

Is there a particular reason you want to raise the pressure?
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Old 09-11-2007, 01:14 PM
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My truck idles way rough when I turn it up on the highest setting on my chip, and a couple guys told me it was due to the injectors not having enough pressure. I have also heard that the 7.3's run better at about 70 psi and that people are getting a little better fuel mileage with a shimed fuel regulator.
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Old 09-11-2007, 01:57 PM
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The more aggressive the tuning the louder the sound no matter what. It sounds to me like you would really benefit from the regulated return more so than an increase in fuel pressure. The noise is dramatically reduced and the engine smoothes out real nice.
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Old 09-17-2007, 03:14 AM
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regulated return sounds like good thing for my truck where can i buy a ITP's kit
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Old 09-17-2007, 05:50 AM
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Get it here: ITP 7.3L Regulated Return Kit
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