[Sean Marconette]

The advantage of a bypass regulator it does not dead head the pump, like a non-bypass. Fuel is moving thru the pump at a constant volume with a bypass. This allows fuel to cool the pump. Dead heading is a low flow/no flow condition.

If you have a low pressure/volume pump like a Holley blue pump, a bypass would not be a benefit to pump life. If you have a high pressure/volume pump that is capable of being used on a FI system, a bypass will extend the life of the pump, and not dead head it. Most of the time a race car is idling around the pits, a very short amount of time is the engine at WOT. The needle and seat are the governing factor in fluid volume and how much cooling effect on the pump in a carb application.