Your profile says you're running twin 40's. I've got twin Dellorto 40's on mine with electric fuel pump, regulator, and pressure guage, and I have my pressure right around 3 psi, slightly under. Hopefully you have a fuel pressure guage, it is crucial running this setup! Weber/Dellorto's aren't recommended to go any higher than 4 psi, with 5 psi as the max. Make sure you have excellent electrical connections (sanded off ground and power connections) and are using thick power wires. Also, make sure the fuel pump is as low as possible, preferably below the tank. If it isn't mounted low, the fuel will not gravity feed to the pump, making it almost impossible to prime the pump and get it pushing fuel. Try priming the pump by sucking on the fuel line, but watch out for fuel when it does come out!!! I have my electric fuel pump located just under where the stock fuel filter mounts on the right side of the car in the engine bay with no problems. Mine fired right up and ran great, even better with more tuning of the fuel pressure. Good luck!

-Andy