SR20DET running problem

[LUV240s]

Just installed SR20DET S14 kouki in '95 240SX with new JDM wiring harness.
Engine cranks fine, but goes dead in less than one min. New Walbro 255 also installed. Fuel pressure weak, engine won't start at all with OEM JDM MAF disconnected. Any help will be appreciated.

[sean350z]

out of curiousity....are your fuel lines connected correctly to the rail?!?

[LUV240s]

Yes, Z32 fuel filter out to fuel rail and fuel reg. to tank return

[cotbu]

Did you check the voltage at the pump? your wiring? Did you check the filter for fuel?