tested bothe pumps on both the AEM and snow #6 injector i have. i was intending to use the snow injector, but wanted to see if the old AEM injector was still usable. First i tested the shurflo and aem injector.. no leaks dexent flow pattern, operates fine then i tested the shurflow with the snow injector... no leaks was a big bigger droplets but i think that was from the less powerful pump. this is also where i forgot that AEM nozzle assemblies have internal check valves... snow does not.