[Joe@KMS]

We run 6 psi of pressure on the fuel gage. With the bypass set up that should be plenty. Your engine builder may have another opinion though... Lots of our customers run both pumps in line. Electric to mechanical. That provides some redundancy.

One trick with the Holley electric pump:
If you look at the pump as it is mounted in the car. There is a large screw/cap on the bottom of the pump facing the rear. If you pull this cap out you will find a spring. Stretch this spring out to about twice its normal length and then put it back in. This will keep the pumps internal regulator from bleeding off pressure and then you can adjust pressure with the bypass regulator.

Congrats on the start up! Very cool indeed.

Joe