Posted for vtailjeff@aol.com:

If you lose the engine driven fuel pump in the air turn on high boost -- it
will get you home. You have ONE electric boost pump that operates at two
different speeds-- HIGH and LOW depending on the switch position. Sit on the
ground and listen to it with the engine off.

Jeff

> Do any of you flying, use the high boost for anything else. In an 
> emergency would you use high or low boost or try both? 
 
My understanding, if you loose the engine fuel pump, you will need high
boost. 
Maybe someone can correct me if I'm wrong.