-8 feed/-6return--1000whp?
If was going to go much higher would have gone to custom tank, big single pump and bigger lines.
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Pressure rise is coming from the regulator....not the return line....unless it's a carb system at 6psi.
The AN inlet/outlet on a regulator is not the restriction to worry about...it's the design orifice inside the regulator....make sure the regulator is designed for the amount of fuel you plan to flow through it.





