Originally Posted by windrunner408
From what I have gathered Dale, the Airdog 2 is just a sh!tty pump design. Folks have tried improving the suction side supply with sumps and this pump is "suppose" to be able to pull/lift fuel out of the tank with no other pump being necessary to supply it fuel OR have its suction lower than the bottom edge of the tank and yet it still fails.
Pumps like the Fuelab and A1000 do not suck fuel on their own. They require either a lift pump or be mounted lower than the bottom edge of the fuel tank. Now there are quite a few guys out there who run a sump feeding a stand alone A1000 or Fuelab just fine and seem to have it hold up just fine, but just know that the factory recommends that they have either a lift pump or be mounted lower than the bottom of the tank and use a sump.
They are designed to pull fuel at a specific pressure, its not very much though which is why they're best used with a sump. There is absolutely no need to run a pusher pump with these, either company will tell you just that on the phone. Does it hurt to run one, no wasy it does not.
An aeromotive or fuelab pump NEEDS a regulator, you will burn the pump up running out full speed/duty cycle of the pump without a regulator. It will fry the pump in a very short amount of time.