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Fuel Pressure???

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Old 05-06-2012, 06:56 PM
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Default Fuel Pressure???

I bought a LS1 with 862 heads, Cam, and custom tuned computer. It is running Ford Injectors (Green Ones). I was told it has 390 hp to the rear wheels (no clue if this true). Just wondering what fuel pressure I should run? I have a complete aeromotive fuel system.

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Old 05-06-2012, 07:10 PM
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It would depend on how the custom tune was setup. Do you have the ability to read the ecu?
Old 05-06-2012, 07:14 PM
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Originally Posted by Brad Campbell
It would depend on how the custom tune was setup. Do you have the ability to read the ecu?
No I dont. The computer is one of those Delphi Mefi 4 computers.
Old 05-06-2012, 07:18 PM
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My guess would either be 3 or 4 bar base pressure. Without knowing how the computer is setup I couldn't be positive. Does the mefi have a scan port in the harness?
Old 05-06-2012, 09:14 PM
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Originally Posted by Brad Campbell
My guess would either be 3 or 4 bar base pressure. Without knowing how the computer is setup I couldn't be positive. Does the mefi have a scan port in the harness?
Yes, I believe it does. I guess I will have to take it to LG Motorsports to have it tuned and dynod.




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