If you have the proper tank fuel, line set up, and pressure line setup, you should not notice when you are running out of fuel. The tank is under pressure to give constant feed once you are out of fuel, your out engine quits, thats it. If your car is leaning out during the last amount of fuel before running out something is wrong with the tank pressure. flooding an engine is not always a good idea you might have a chance of a bent rod, you will have excessive fuel in the engine, and throwing in a large enough amount of cold fuel into a hot engine to make it die is like throwing water on a light bulb.I am not saying these methods wont work. I just dont like a flooded engine.