I just installed a new FPR kit (Aeromotive A1000 kit with lines, adapter and gauge). It supposed to control de fuel pressure from 30 to 70 PSI, but when the car is in neutral the fuel pressure goes under 30, making the car stall. The OEM FPR do not let the car to stall.

I have tighten to the max the bolt that press the internal spring, and the problem has not been resolved.

Any clues?
Is my FPR defective?

Thanks in ahead.