Causing potential harm?

RacerRick said:
not exactly, do you still have cats on the car? if so you need the smog pump to deliver air to the cats so they will "light off" and not get clogged up!

That's really only a problem with the original crappy cats that came on the car. Most newer cats have no use for the AIR pump. My VRS x-pipe with carsound cats has no provision for the AIR pump and it doesn't need one.