Fuel pressure?

Zat_Zuma

Fuel pressure gauge

You may have to increase voltage to the fuel pump by way of a relay to supply battery voltage to the fuel pump.

Or go all out and install a fuel pressure return system with the power supply voltage relay.

It's more of a common problem than what most people realize with FI and bigger injectors. A good steady 14 volts to the fuel pump, would go a long way.

In my case, fuel pressure drops to 42 psi @ 7500 RPM. Idle 62 psi. I had a plugged pump suction screen before and only had 24 psi @ 7500 RPM causing a extreme lean condition.

For the record, I haven't done the power relay yet, but plan on a complete fuel return system, voltage relay, regulator and fuel filter to be located on the outside of fuel tank, where they belong. I don't like the OEM fuel pump/filter/regulator design at all and will be changing it this spring.

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