ODAWG

I recently had my car tuned my tuner couldnt finish the tune because of issues with the fuel pump, so i installed a new walbro and the car started right up when i finished the install even with little gas in the tank and the fuel system being depressurized now after the tune it takes a few seconds to start and he tells me its the design of the fuel pump not having a pick up tube and its nothing to worry about what do you guys think i would really appreciate you guys input.