Long left corners lack of fuel

I have been running into an issue when in a long left corner am driving around 140 kph at 1.3 g's and suddenly the car stalls and loose the lap until the gasoline reaches the fuel pickup inside of the tank.

At first road racing events I was just adding more fuel and problem solved. Now am getting more skilled and just when warmed up, the issue starts is frustrating have to stop and go for gasoline