Returnless fuel system

[Olav]

It's technically not a returnless system. The C5 fuel-filter-regulator does have a return line that must go back to the fuel tank.

To me, there are few drawbacks for engines making less than 600hp when combined with the 255lph pump. Take a look inside the outlet of the pump. The orifices are tiny. The filter is not the restriction or limiting factor.

The advantages are many. Need a filter? Any GM dealer will have one. OE reliabilty? Got that too.

I know that it have a return to the tank...I might order a filter/ regulator

Olav