Well I thought the fuel pump was submerged. Which would make it prime pretty quick but I could also be wrong about that. I was more worried about fuel lines needing to be bleed if they sucked air. My VTX had the pump in the tank. From the time it first sputtered until I could flip the switch on the pony tank and it fired was 5-7 sec. Hoping for the same results on the B. But wanted to see if anyone had been down that road yet.