FiTech EFI system

Some information :: for any of you who have either had some fuel coming out of the vent line, or have read the concerns over on other websites, I was talking to FITECH last week.

My command center is in a tight engine bay and despite using a reflective material wrapped around the fuel sump, it gets quite warm . If I let mine idle for a while, fuel will spit out the vent. My vent line was t'd into the existing 1965 vent line and fuel should have run back into the tank.. Sometimes though, it would make it's way out the original steel line and out onto the ground. I have relocated a fitting further down the filler pipe to encourage any excess fuel to return to the tank.

Obviously I was looking for solutions .

Fitech suggested going into the "pro tuning" settings and reduce the PWMlowflow( under fuel pump control) to "40"

This setting , they said, will slow the submerged pump down on idle and during light cruise, and may reduce the amount of heat in the sump. I will be testing mine to see if the amount of fuel spitting out the top is reduced.

I am also considering lowering the input float, if the vent spitting continues. The spitting itself seems to pulse, like from the pulsing of the mechanical pump, so I have concerns that this may be float related.. BTW I have a regulator on the line coming in set at 5.5.

Has anyone taken one of these fuel centers apart to see how they are set up ?

Ken