[RICK LAKE]

Rottie Pete I run an FI system and have 2 1/2" seperated system running to my system and 3/8" return line. Better to have too much than not enough. Fuel pressure regulator will handle pressure and return line handles the rest. Stainless is great if you can bend it. I went with aluminum lines. This is for track cars ONLY. This is NOT for street usage. Over time aluminum lines will crack from vibration. I have mine with plastic tube to protect from rock hits and clamped every 12" with insolated hose clamps. Alot of states will fail you if you run aluminum on the street. Only down side I have seen is the gas gets warm with a return system. 1, 1/2" line to motor and 1, 5/16" back to tank. Would also recomend an intank fuel pump setup. I have made my own with 2 pumps in the tank. Double filters, relays and switchs to control both or a single. Last note, problem with rubber hoses over time and with E gases. Methanol eats the rubber out over time. I got 13 years on both short lines from pumps to housing. Inside where eaten and the filters where full of like rubber partials. No damage other than car not running. Same applys for fuel regulator diapham. If you run with external pump have 2 pickups at both ends of gas tank. Making hard high "G" turns will cause a fuel issues. Been there and have done that. Most external pumps should not be mounted too high for they don't have alot of sucking to prime the system. A weldon pump would be a good one if going external. Good luck Rick