[Aussie Mike]

I messed around with this stuff quite a bit.

With injected cars and high pressure pumps they don't create a lot of suction and have real trouble drawing fuel up out of the tank. You need to either make sure the pump is installed down low below the fuel level or have a swirl pot that will give you a head of fuel to keep the pump constantly supplied.

The other issue you have with injected fuel pump setups is that if the pump pickup becomes uncovered you lose fuel pressure and the car will stall or hicup straight away. This wasn't a problem with carburetors as you had a constant supply of fuel sitting in the bowls it. It didn't matter if the pump took a few seconds to catch up with demand.

There are a few options for fixing this. I ran an in tank pump to feed a swirl pot that keeps a constant head of fuel available for the high pressure pump.

With your setup to avoid any modifications to the tank etc I would look at installing an external carter electric pump to draw fuel from the tank and feed it to your aeromotive pump. The carter pump is a low pressure diaphram pump rather than a vane pump like the holley so they have good suction and will pull the fuel up out of the tank. You may get away without running a swirl pot and feed direct from the carter to the aeromotive but having a swirl pot in between would help. The return line from your EFI pressure reg should go to the swirl pot and there should be a return from the swirl pot to the main tank.

I'm currently running a low pressure in tank pump in the main tank and this feeds a swirl pot mounted up high in the left rear of the car this feeds down to a high pressure pump that feeds the fuel rails.

My next project is to build a stainless fuel tank with the swirl pot inside it. I will either use an in tank high pressure pump sitting in the swirlpot or keep my Bosch 044 and mount it down low near the bottom of the tank.

Hope this helps.

Cheers